Articles | Volume 16, issue 10
https://doi.org/10.5194/bg-16-2205-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/bg-16-2205-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
29 May 2019
Research article |
| 29 May 2019
| 29 May 2019
Physically controlled CO2 effluxes from a reservoir surface in the upper Mekong River Basin: a case study in the Gongguoqiao Reservoir
Lin Lin
Department of Geography, National University of Singapore, 117570, Singapore
Xixi Lu
CORRESPONDING AUTHOR
Department of Geography, National University of Singapore, 117570, Singapore
Inner Mongolia Key Lab of River and Lake Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, China
Shaoda Liu
Yale School of Forestry & Environmental Studies, 195 Prospect Street, New Haven, CT 06511, USA
Shie-Yui Liong
Tropical Marine Science Institute (TMSI), National University of Singapore, 117570, Singapore
Kaidao Fu
CORRESPONDING AUTHOR
Asian International Rivers Center, Yunnan University, Chenggong University City, Chenggong, Kunming, Yunnan, 650500, China
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Samuel De Xun Chua, Xi Xi Lu, Chantha Oeurng, Ty Sok, and Carl Grundy-Warr
Hydrol. Earth Syst. Sci., 26, 609–625, https://doi.org/10.5194/hess-26-609-2022, https://doi.org/10.5194/hess-26-609-2022, 2022
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We found that the annual flood at the Cambodian floodplains decreased from 1960 to 2019. Consequently, the Tonle Sap Lake, the largest lake in Southeast Asia, is shrinking. The results are worrying because the local fisheries and planting calendar might be disrupted. This drastic decline of flooding extent is caused mostly by local factors, namely water withdrawal for irrigation and channel incision from sand mining activities.
Xinyu Liu, Xixi Lu, Ruihong Yu, Heyang Sun, Hao Xue, Zhen Qi, Zhengxu Cao, Zhuangzhuang Zhang, and Tingxi Liu
Biogeosciences, 18, 4855–4872, https://doi.org/10.5194/bg-18-4855-2021, https://doi.org/10.5194/bg-18-4855-2021, 2021
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Gradual riparian wetland drying is increasingly sensitive to global warming and contributes to climate change. We analyzed the emissions of CO2, CH4, and N2O from riparian wetlands in the Xilin River basin to understand the role of these ecosystems in greenhouse gas emissions. Our study showed that anthropogenic activities have extensively changed the hydrological characteristics of the riparian wetlands and might accelerate carbon loss, which could further affect greenhouse gas emissions.
Mingyang Tian, Xiankun Yang, Lishan Ran, Yuanrong Su, Lingyu Li, Ruihong Yu, Haizhu Hu, and Xi Xi Lu
Biogeosciences Discuss., https://doi.org/10.5194/bg-2018-292, https://doi.org/10.5194/bg-2018-292, 2018
Preprint withdrawn
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We investigated the spatial and temporal variability of riverine CO2 outgassing characteristics of the Yellow River source region. Riverine CO2 emission were in situ monitored under different land cover types (i.e., glacier, permafrost, wetland, and grassland) in the research area.This study will lead to a better understanding of riverine carbon export, especially for alpine rivers, which will help refine the global estimation of global GHG gas emission.
Thi Phuong Quynh Le, Cyril Marchand, Cuong Tu Ho, Nhu Da Le, Thi Thuy Duong, XiXi Lu, Phuong Kieu Doan, Trung Kien Nguyen, Thi Mai Huong Nguyen, and Duy An Vu
Biogeosciences, 15, 4799–4814, https://doi.org/10.5194/bg-15-4799-2018, https://doi.org/10.5194/bg-15-4799-2018, 2018
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The Red River is a typical south-east Asian river, strongly affected by climate and human activity. This study showed the spatial and seasonal variability of CO2 emissions at the water–air interface of the lower part of this river due to natural conditions (meteo-hydrological-geomorphological characteristics) and human activities (dam impoundment, population, land use). The Red River water was supersaturated with CO2, providing a mean water–air CO2 flux of 530 ± 17 mmol m−2 d−1.
Lishan Ran, Mingyang Tian, Nufang Fang, Suiji Wang, Xixi Lu, Xiankun Yang, and Frankie Cho
Biogeosciences, 15, 3857–3871, https://doi.org/10.5194/bg-15-3857-2018, https://doi.org/10.5194/bg-15-3857-2018, 2018
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We systematically assessed the transport and fate of riverine carbon in the moderate-sized Wuding catchment on the Chinese Loess Plateau by constructing a riverine carbon budget and further relating it to terrestrial ecosystem productivity. The riverine carbon export accounted for 16 % of the catchment's net ecosystem production (NEP). It seems that a significant fraction of terrestrial NEP in this catchment is laterally transported from the terrestrial biosphere to the drainage network.
Ji-Hyung Park, Omme K. Nayna, Most S. Begum, Eliyan Chea, Jens Hartmann, Richard G. Keil, Sanjeev Kumar, Xixi Lu, Lishan Ran, Jeffrey E. Richey, Vedula V. S. S. Sarma, Shafi M. Tareq, Do Thi Xuan, and Ruihong Yu
Biogeosciences, 15, 3049–3069, https://doi.org/10.5194/bg-15-3049-2018, https://doi.org/10.5194/bg-15-3049-2018, 2018
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Human activities are drastically altering water and material flows in river systems across Asia. This review provides a conceptual framework for assessing the human impacts on Asian river C fluxes and an update on anthropogenic alterations of riverine C fluxes, focusing on the impacts of water pollution and river impoundments on CO2 outgassing from the rivers draining South, Southeast, and East Asian regions that account for the largest fraction of river discharge and C exports from Asia.
Hewen Niu, Shichang Kang, Hailong Wang, Rudong Zhang, Xixi Lu, Yun Qian, Rukumesh Paudyal, Shijin Wang, Xiaofei Shi, and Xingguo Yan
Atmos. Chem. Phys., 18, 6441–6460, https://doi.org/10.5194/acp-18-6441-2018, https://doi.org/10.5194/acp-18-6441-2018, 2018
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Deposition of light-absorbing carbonaceous aerosol on the surface of glaciers can greatly alter the energy fluxes of glaciers. Two years of continuous observations of carbonaceous aerosols in a glacierized region are analyzed. We mainly studied the light absorption properties of carbonaceous aerosol and have employed a global aerosol–climate model to estimate source attributions of atmospheric black carbon.
Lishan Ran, Xi Xi Lu, and Shaoda Liu
Biogeosciences, 14, 2183–2198, https://doi.org/10.5194/bg-14-2183-2017, https://doi.org/10.5194/bg-14-2183-2017, 2017
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Understanding riverine carbon dynamics is critical for not only better estimates of various carbon fluxes but also evaluating their significance in the global carbon budget. In this study, we examined the dynamics of riverine CO2 partial pressure (pCO2) in the Yangtze River basin. Its pCO2 was characterized by strong spatial and temporal variations. With a basin-wide mean pCO2 of 2662(±1240) μatm, substantial CO2 evasion is expected. Future efforts are needed to evaluate its significance.
L. Ran, X. X. Lu, J. E. Richey, H. Sun, J. Han, R. Yu, S. Liao, and Q. Yi
Biogeosciences, 12, 921–932, https://doi.org/10.5194/bg-12-921-2015, https://doi.org/10.5194/bg-12-921-2015, 2015
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This paper investigated the spatial and temporal variations of pCO2 in the Yellow River watershed. While the pCO2 responded exponentially to total suspended solids (TSS) export when the TSS concentration was less than 100 kg m-3, it decreased and remained stable thereafter if the TSS concentration was greater than 100 kg m-3. The average pCO2 for the watershed was estimated at 2810±1985 μatm, indicating a large potential for CO2 evasion.
X. Ma, X. X. Lu, M. van Noordwijk, J. T. Li, and J. C. Xu
Hydrol. Earth Syst. Sci., 18, 1979–1994, https://doi.org/10.5194/hess-18-1979-2014, https://doi.org/10.5194/hess-18-1979-2014, 2014
L. Ran, X. X. Lu, and Z. Xin
Biogeosciences, 11, 945–959, https://doi.org/10.5194/bg-11-945-2014, https://doi.org/10.5194/bg-11-945-2014, 2014
Related subject area
Biogeochemistry: Greenhouse Gases
Influence of wind strength and direction on diffusive methane fluxes and atmospheric methane concentrations above the North Sea
Using eddy covariance observations to determine the carbon sequestration characteristics of subalpine forests in the Qinghai–Tibet Plateau
Isotopomer labeling and oxygen dependence of hybrid nitrous oxide production
The emission of CO from tropical rainforest soils
Modelling CO2 and N2O emissions from soils in silvopastoral systems of the West African Sahelian band
A case study on topsoil removal and rewetting for paludiculture: effect on biogeochemistry and greenhouse gas emissions from Typha latifolia, Typha angustifolia, and Azolla filiculoides
Assessing improvements in global ocean pCO2 machine learning reconstructions with Southern Ocean autonomous sampling
Timescale dependence of airborne fraction and underlying climate–carbon-cycle feedbacks for weak perturbations in CMIP5 models
Technical note: Preventing CO2 overestimation from mercuric or copper(II) chloride preservation of dissolved greenhouse gases in freshwater samples
Exploring temporal and spatial variation of nitrous oxide flux using several years of peatland forest automatic chamber data
Diurnal versus spatial variability of greenhouse gas emissions from an anthropogenically modified lowland river in Germany
Regional assessment and uncertainty analysis of carbon and nitrogen balances at cropland scale using the ecosystem model LandscapeDNDC
Physicochemical Perturbation Increases Nitrous Oxide Production in Soils and Sediments
Resolving heterogeneous fluxes from tundra halves the growing season carbon budget
Interannual and seasonal variability of the air-sea CO2 exchange at Utö in the coastal region of the Baltic Sea
Seasonal dynamics and regional distribution patterns of CO2 and CH4 in the north-eastern Baltic Sea
Carbon degradation and mobilisation potentials of thawing permafrost peatlands in Northern Norway
Lawns and meadows in urban green space – a comparison from perspectives of greenhouse gases, drought resilience and plant functional types
Using automated transparent chambers to quantify CO2 emissions and potential emission reduction by water infiltration systems in drained coastal peatlands in the Netherlands
Large contribution of soil N2O emission to the global warming potential of a large-scale oil palm plantation despite changing from conventional to reduced management practices
Identifying landscape hot and cold spots of soil greenhouse gas fluxes by combining field measurements and remote sensing data
Enhanced Southern Ocean CO2 outgassing as a result of stronger and poleward shifted southern hemispheric westerlies
Spatial and temporal variability of methane emissions and environmental conditions in a hyper-eutrophic fishpond
Optical and radar Earth observation data for upscaling methane emissions linked to permafrost degradation in sub-Arctic peatlands in northern Sweden
Herbivore–shrub interactions influence ecosystem respiration and biogenic volatile organic compound composition in the subarctic
Methane emissions due to reservoir flushing: a significant emission pathway?
Carbon dioxide and methane fluxes from mounds of African fungus-growing termites
Diel and seasonal methane dynamics in the shallow and turbulent Wadden Sea
Technical note: Skirt chamber – an open dynamic method for the rapid and minimally intrusive measurement of greenhouse gas emissions from peatlands
Seasonal variability of nitrous oxide concentrations and emissions in a temperate estuary
Reviews and syntheses: Recent advances in microwave remote sensing in support of terrestrial carbon cycle science in Arctic–boreal regions
Simulated methane emissions from Arctic ponds are highly sensitive to warming
Water-table-driven greenhouse gas emission estimates guide peatland restoration at national scale
Relationships between greenhouse gas production and landscape position during short-term permafrost thaw under anaerobic conditions in the Lena Delta
Carbon emissions and radiative forcings from tundra wildfires in the Yukon–Kuskokwim River Delta, Alaska
Carbon monoxide (CO) cycling in the Fram Strait, Arctic Ocean
Post-flooding disturbance recovery promotes carbon capture in riparian zones
Meteorological responses of carbon dioxide and methane fluxes in the terrestrial and aquatic ecosystems of a subarctic landscape
Carbon emission and export from the Ket River, western Siberia
Evaluation of wetland CH4 in the Joint UK Land Environment Simulator (JULES) land surface model using satellite observations
Greenhouse gas fluxes in mangrove forest soil in an Amazon estuary
Temporal patterns and drivers of CO2 emission from dry sediments in a groyne field of a large river
Effects of water table level and nitrogen deposition on methane and nitrous oxide emissions in an alpine peatland
Highest methane concentrations in an Arctic river linked to local terrestrial inputs
Seasonal study of the small-scale variability in dissolved methane in the western Kiel Bight (Baltic Sea) during the European heatwave in 2018
Trace gas fluxes from tidal salt marsh soils: implications for carbon–sulfur biogeochemistry
Spatial and temporal variation in δ13C values of methane emitted from a hemiboreal mire: methanogenesis, methanotrophy, and hysteresis
Intercomparison of methods to estimate gross primary production based on CO2 and COS flux measurements
Lateral carbon export has low impact on the net ecosystem carbon balance of a polygonal tundra catchment
The effect of static chamber base on N2O flux in drip irrigation
Ingeborg Bussmann, Eric P. Achterberg, Holger Brix, Nicolas Brüggemann, Götz Flöser, Claudia Schütze, and Philipp Fischer
Biogeosciences, 21, 3819–3838, https://doi.org/10.5194/bg-21-3819-2024, https://doi.org/10.5194/bg-21-3819-2024, 2024
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Methane (CH4) is an important greenhouse gas and contributes to climate warming. However, the input of CH4 from coastal areas to the atmosphere is not well defined. Dissolved and atmospheric CH4 was determined at high spatial resolution in or above the North Sea. The atmospheric CH4 concentration was mainly influenced by wind direction. With our detailed study on the spatial distribution of CH4 fluxes we were able to provide a detailed and more realistic estimation of coastal CH4 fluxes.
Niu Zhu, Jinniu Wang, Dongliang Luo, Xufeng Wang, Cheng Shen, and Ning Wu
Biogeosciences, 21, 3509–3522, https://doi.org/10.5194/bg-21-3509-2024, https://doi.org/10.5194/bg-21-3509-2024, 2024
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Our study delves into the vital role of subalpine forests in the Qinghai–Tibet Plateau as carbon sinks in the context of climate change. Utilizing advanced eddy covariance systems, we uncover their significant carbon sequestration potential, observing distinct seasonal patterns influenced by temperature, humidity, and radiation. Notably, these forests exhibit robust carbon absorption, with potential implications for global carbon balance.
Colette L. Kelly, Nicole M. Travis, Pascale Anabelle Baya, Claudia Frey, Xin Sun, Bess B. Ward, and Karen L. Casciotti
Biogeosciences, 21, 3215–3238, https://doi.org/10.5194/bg-21-3215-2024, https://doi.org/10.5194/bg-21-3215-2024, 2024
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Nitrous oxide, a potent greenhouse gas, accumulates in regions of the ocean that are low in dissolved oxygen. We used a novel combination of chemical tracers to determine how nitrous oxide is produced in one of these regions, the eastern tropical North Pacific Ocean. Our experiments showed that the two most important sources of nitrous oxide under low-oxygen conditions are denitrification, an anaerobic process, and a novel “hybrid” process performed by ammonia-oxidizing archaea.
Hella van Asperen, Thorsten Warneke, Alessandro Carioca de Araújo, Bruce Forsberg, Sávio José Filgueiras Ferreira, Thomas Röckmann, Carina van der Veen, Sipko Bulthuis, Leonardo Ramos de Oliveira, Thiago de Lima Xavier, Jailson da Mata, Marta de Oliveira Sá, Paulo Ricardo Teixeira, Julie Andrews de França e Silva, Susan Trumbore, and Justus Notholt
Biogeosciences, 21, 3183–3199, https://doi.org/10.5194/bg-21-3183-2024, https://doi.org/10.5194/bg-21-3183-2024, 2024
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Carbon monoxide (CO) is regarded as an important indirect greenhouse gas. Soils can emit and take up CO, but, until now, uncertainty remains as to which process dominates in tropical rainforests. We present the first soil CO flux measurements from a tropical rainforest. Based on our observations, we report that tropical rainforest soils are a net source of CO. In addition, we show that valley streams and inundated areas are likely additional hot spots of CO in the ecosystem.
Yélognissè Agbohessou, Claire Delon, Manuela Grippa, Eric Mougin, Daouda Ngom, Espoir Koudjo Gaglo, Ousmane Ndiaye, Paulo Salgado, and Olivier Roupsard
Biogeosciences, 21, 2811–2837, https://doi.org/10.5194/bg-21-2811-2024, https://doi.org/10.5194/bg-21-2811-2024, 2024
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Emissions of greenhouse gases in the Sahel are not well represented because they are considered weak compared to the rest of the world. However, natural areas in the Sahel emit carbon dioxide and nitrous oxides, which need to be assessed because of extended surfaces. We propose an assessment of such emissions in Sahelian silvopastoral systems and of how they are influenced by environmental characteristics. These results are essential to inform climate change strategies in the region.
Merit van den Berg, Thomas M. Gremmen, Renske J. E. Vroom, Jacobus van Huissteden, Jim Boonman, Corine J. A. van Huissteden, Ype van der Velde, Alfons J. P. Smolders, and Bas P. van de Riet
Biogeosciences, 21, 2669–2690, https://doi.org/10.5194/bg-21-2669-2024, https://doi.org/10.5194/bg-21-2669-2024, 2024
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Drained peatlands emit 3 % of the global greenhouse gas emissions. Paludiculture is a way to reduce CO2 emissions while at the same time generating an income for landowners. The side effect is the potentially high methane emissions. We found very high methane emissions for broadleaf cattail compared with narrowleaf cattail and water fern. The rewetting was, however, effective to stop CO2 emissions for all species. The highest potential to reduce greenhouse gas emissions had narrowleaf cattail.
Thea H. Heimdal, Galen A. McKinley, Adrienne J. Sutton, Amanda R. Fay, and Lucas Gloege
Biogeosciences, 21, 2159–2176, https://doi.org/10.5194/bg-21-2159-2024, https://doi.org/10.5194/bg-21-2159-2024, 2024
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Measurements of ocean carbon are limited in time and space. Machine learning algorithms are therefore used to reconstruct ocean carbon where observations do not exist. Improving these reconstructions is important in order to accurately estimate how much carbon the ocean absorbs from the atmosphere. In this study, we find that a small addition of observations from the Southern Ocean, obtained by autonomous sampling platforms, could significantly improve the reconstructions.
Guilherme L. Torres Mendonça, Julia Pongratz, and Christian H. Reick
Biogeosciences, 21, 1923–1960, https://doi.org/10.5194/bg-21-1923-2024, https://doi.org/10.5194/bg-21-1923-2024, 2024
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We study the timescale dependence of airborne fraction and underlying feedbacks by a theory of the climate–carbon system. Using simulations we show the predictive power of this theory and find that (1) this fraction generally decreases for increasing timescales and (2) at all timescales the total feedback is negative and the model spread in a single feedback causes the spread in the airborne fraction. Our study indicates that those are properties of the system, independently of the scenario.
François Clayer, Jan Erik Thrane, Kuria Ndungu, Andrew King, Peter Dörsch, and Thomas Rohrlack
Biogeosciences, 21, 1903–1921, https://doi.org/10.5194/bg-21-1903-2024, https://doi.org/10.5194/bg-21-1903-2024, 2024
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Determination of dissolved greenhouse gas (GHG) in freshwater allows us to estimate GHG fluxes. Mercuric chloride (HgCl2) is used to preserve water samples prior to GHG analysis despite its environmental and health impacts and interferences with water chemistry in freshwater. Here, we tested the effects of HgCl2, two substitutes and storage time on GHG in water from two boreal lakes. Preservation with HgCl2 caused overestimation of CO2 concentration with consequences for GHG flux estimation.
Helena Rautakoski, Mika Korkiakoski, Jarmo Mäkelä, Markku Koskinen, Kari Minkkinen, Mika Aurela, Paavo Ojanen, and Annalea Lohila
Biogeosciences, 21, 1867–1886, https://doi.org/10.5194/bg-21-1867-2024, https://doi.org/10.5194/bg-21-1867-2024, 2024
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Current and future nitrous oxide (N2O) emissions are difficult to estimate due to their high variability in space and time. Several years of N2O fluxes from drained boreal peatland forest indicate high importance of summer precipitation, winter temperature, and snow conditions in controlling annual N2O emissions. The results indicate increasing year-to-year variation in N2O emissions in changing climate with more extreme seasonal weather conditions.
Matthias Koschorreck, Norbert Kamjunke, Uta Koedel, Michael Rode, Claudia Schuetze, and Ingeborg Bussmann
Biogeosciences, 21, 1613–1628, https://doi.org/10.5194/bg-21-1613-2024, https://doi.org/10.5194/bg-21-1613-2024, 2024
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We measured the emission of carbon dioxide (CO2) and methane (CH4) from different sites at the river Elbe in Germany over 3 days to find out what is more important for quantification: small-scale spatial variability or diurnal temporal variability. We found that CO2 emissions were very different between day and night, while CH4 emissions were more different between sites. Dried out river sediments contributed to CO2 emissions, while the side areas of the river were important CH4 sources.
Odysseas Sifounakis, Edwin Haas, Klaus Butterbach-Bahl, and Maria P. Papadopoulou
Biogeosciences, 21, 1563–1581, https://doi.org/10.5194/bg-21-1563-2024, https://doi.org/10.5194/bg-21-1563-2024, 2024
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We performed a full assessment of the carbon and nitrogen cycles of a cropland ecosystem. An uncertainty analysis and quantification of all carbon and nitrogen fluxes were deployed. The inventory simulations include greenhouse gas emissions of N2O, NH3 volatilization and NO3 leaching from arable land cultivation in Greece. The inventory also reports changes in soil organic carbon and nitrogen stocks in arable soils.
Nathaniel B. Weston, Cynthia Troy, Patrick J. Kearns, Jennifer L. Bowen, William Porubsky, Christelle Hyacinthe, Christof Meile, Philippe Van Cappellen, and Samantha B. Joye
EGUsphere, https://doi.org/10.5194/egusphere-2024-448, https://doi.org/10.5194/egusphere-2024-448, 2024
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Nitrous oxide (N2O) is a potent greenhouse and ozone depleting gas produced largely from microbial nitrogen cycling processes, and human activities have resulted in increases in atmospheric N2O. We investigate the role of physical and chemical disturbance to soils and sediments. We demonstrate that the disturbance increases N2O production, the microbial community adapts to disturbance over time, an initial disturbance appears to confer resilience to subsequent disturbance.
Sarah M. Ludwig, Luke Schiferl, Jacqueline Hung, Susan M. Natali, and Roisin Commane
Biogeosciences, 21, 1301–1321, https://doi.org/10.5194/bg-21-1301-2024, https://doi.org/10.5194/bg-21-1301-2024, 2024
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Landscapes are often assumed to be homogeneous when using eddy covariance fluxes, which can lead to biases when calculating carbon budgets. In this study we report eddy covariance carbon fluxes from heterogeneous tundra. We used the footprints of each flux observation to unmix the fluxes coming from components of the landscape. We identified and quantified hot spots of carbon emissions in the landscape. Accurately scaling with landscape heterogeneity yielded half as much regional carbon uptake.
Martti Honkanen, Mika Aurela, Juha Hatakka, Lumi Haraguchi, Sami Kielosto, Timo Mäkelä, Jukka Seppälä, Simo-Matti Siiriä, Ken Stenbäck, Juha-Pekka Tuovinen, Pasi Ylöstalo, and Lauri Laakso
EGUsphere, https://doi.org/10.5194/egusphere-2024-628, https://doi.org/10.5194/egusphere-2024-628, 2024
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We present the 5-year (2017–2021) data set of the air-sea CO2 flux measurements made in the Archipelago Sea, the Baltic Sea. The study site was found to act as a net source of CO2 with an average annual net air-sea CO2 exchange of 27.1 gC m-2 y-1, indicating that this marine system respires carbon originated elsewhere. The annual CO2 emission varied between 18.2 in 2018 and 39.2 gC m-2 y-1 in 2017. These two years differed greatly in terms of the algal blooms and the pCO2 drawdown.
Silvie Lainela, Erik Jacobs, Stella-Theresa Stoicescu, Gregor Rehder, and Urmas Lips
EGUsphere, https://doi.org/10.5194/egusphere-2024-598, https://doi.org/10.5194/egusphere-2024-598, 2024
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We evaluate the variability of carbon dioxide and methane in the surface layer of the north-eastern basins of the Baltic Sea in 2018. We show that the shallower coastal areas have considerably higher spatial variability and seasonal amplitude of surface layer pCO2 and cCH4 than measured in the Baltic Sea offshore areas. Despite this high variability, caused mostly by coastal physical processes, the average annual air-sea CO2 fluxes differed only marginally between the sub-basins.
Sigrid Trier Kjær, Sebastian Westermann, Nora Nedkvitne, and Peter Dörsch
EGUsphere, https://doi.org/10.5194/egusphere-2024-562, https://doi.org/10.5194/egusphere-2024-562, 2024
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Permafrost peatlands are thawing due to climate change, releasing large quantities of carbon that degrades upon thawing and is released as CO2, CH4, or dissolved organic carbon (DOC). We incubated thawed Norwegian permafrost peat plateaus and thermokarst pond sediment found next to permafrost for up to 350 days to measure carbon loss. CO2 production was largest initially, while CH4 production increased over time. The largest carbon loss was measured at the top of the peat plateau core as DOC.
Justine Trémeau, Beñat Olascoaga, Leif Backman, Esko Karvinen, Henriikka Vekuri, and Liisa Kulmala
Biogeosciences, 21, 949–972, https://doi.org/10.5194/bg-21-949-2024, https://doi.org/10.5194/bg-21-949-2024, 2024
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We studied urban lawns and meadows in the Helsinki metropolitan area, Finland. We found that meadows are more resistant to drought events but that they do not increase carbon sequestration compared with lawns. Moreover, the transformation from lawns to meadows did not demonstrate any negative climate effects in terms of greenhouse gas emissions. Even though social and economic aspects also steer urban development, these results can guide planning to consider carbon-smart options.
Ralf C. H. Aben, Daniel van de Craats, Jim Boonman, Stijn H. Peeters, Bart Vriend, Coline C. F. Boonman, Ype van der Velde, Gilles Erkens, and Merit van den Berg
EGUsphere, https://doi.org/10.5194/egusphere-2024-403, https://doi.org/10.5194/egusphere-2024-403, 2024
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Drained peatlands cause high CO2 emissions. Raising the groundwater table can lower emissions. We used automated flux chamber measurements on 12 sites for up to 4 years and found a linear association between annual water table depth and CO2 emission. We also found that the average amount of carbon above the water table better predicted annual CO2 emission than water table depth and that water infiltration systems—used to effectively raise the water table—can be used to mitigate CO2 emissions.
Guantao Chen, Edzo Veldkamp, Muhammad Damris, Bambang Irawan, Aiyen Tjoa, and Marife D. Corre
Biogeosciences, 21, 513–529, https://doi.org/10.5194/bg-21-513-2024, https://doi.org/10.5194/bg-21-513-2024, 2024
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We established an oil palm management experiment in a large-scale oil palm plantation in Jambi, Indonesia. We recorded oil palm fruit yield and measured soil CO2, N2O, and CH4 fluxes. After 4 years of treatment, compared with conventional fertilization with herbicide weeding, reduced fertilization with mechanical weeding did not reduce yield and soil greenhouse gas emissions, which highlights the legacy effects of over a decade of conventional management prior to the start of the experiment.
Elizabeth Gachibu Wangari, Ricky Mwangada Mwanake, Tobias Houska, David Kraus, Gretchen Maria Gettel, Ralf Kiese, Lutz Breuer, and Klaus Butterbach-Bahl
Biogeosciences, 20, 5029–5067, https://doi.org/10.5194/bg-20-5029-2023, https://doi.org/10.5194/bg-20-5029-2023, 2023
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Agricultural landscapes act as sinks or sources of the greenhouse gases (GHGs) CO2, CH4, or N2O. Various physicochemical and biological processes control the fluxes of these GHGs between ecosystems and the atmosphere. Therefore, fluxes depend on environmental conditions such as soil moisture, soil temperature, or soil parameters, which result in large spatial and temporal variations of GHG fluxes. Here, we describe an example of how this variation may be studied and analyzed.
Laurie C. Menviel, Paul Spence, Andrew E. Kiss, Matthew A. Chamberlain, Hakase Hayashida, Matthew H. England, and Darryn Waugh
Biogeosciences, 20, 4413–4431, https://doi.org/10.5194/bg-20-4413-2023, https://doi.org/10.5194/bg-20-4413-2023, 2023
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As the ocean absorbs 25% of the anthropogenic emissions of carbon, it is important to understand the impact of climate change on the flux of carbon between the ocean and the atmosphere. Here, we use a very high-resolution ocean, sea-ice, carbon cycle model to show that the capability of the Southern Ocean to uptake CO2 has decreased over the last 40 years due to a strengthening and poleward shift of the southern hemispheric westerlies. This trend is expected to continue over the coming century.
Petr Znachor, Jiří Nedoma, Vojtech Kolar, and Anna Matoušů
Biogeosciences, 20, 4273–4288, https://doi.org/10.5194/bg-20-4273-2023, https://doi.org/10.5194/bg-20-4273-2023, 2023
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We conducted intensive spatial sampling of the hypertrophic fishpond to better understand the spatial dynamics of methane fluxes and environmental heterogeneity in fishponds. The diffusive fluxes of methane accounted for only a minor fraction of the total fluxes and both varied pronouncedly within the pond and over the studied summer season. This could be explained only by the water depth. Wind substantially affected temperature, oxygen and chlorophyll a distribution in the pond.
Sofie Sjögersten, Martha Ledger, Matthias Siewert, Betsabé de la Barreda-Bautista, Andrew Sowter, David Gee, Giles Foody, and Doreen S. Boyd
Biogeosciences, 20, 4221–4239, https://doi.org/10.5194/bg-20-4221-2023, https://doi.org/10.5194/bg-20-4221-2023, 2023
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Permafrost thaw in Arctic regions is increasing methane emissions, but quantification is difficult given the large and remote areas impacted. We show that UAV data together with satellite data can be used to extrapolate emissions across the wider landscape as well as detect areas at risk of higher emissions. A transition of currently degrading areas to fen type vegetation can increase emission by several orders of magnitude, highlighting the importance of quantifying areas at risk.
Cole G. Brachmann, Tage Vowles, Riikka Rinnan, Mats P. Björkman, Anna Ekberg, and Robert G. Björk
Biogeosciences, 20, 4069–4086, https://doi.org/10.5194/bg-20-4069-2023, https://doi.org/10.5194/bg-20-4069-2023, 2023
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Herbivores change plant communities through grazing, altering the amount of CO2 and plant-specific chemicals (termed VOCs) emitted. We tested this effect by excluding herbivores and studying the CO2 and VOC emissions. Herbivores reduced CO2 emissions from a meadow community and altered VOC composition; however, community type had the strongest effect on the amount of CO2 and VOCs released. Herbivores can mediate greenhouse gas emissions, but the effect is marginal and community dependent.
Ole Lessmann, Jorge Encinas Fernández, Karla Martínez-Cruz, and Frank Peeters
Biogeosciences, 20, 4057–4068, https://doi.org/10.5194/bg-20-4057-2023, https://doi.org/10.5194/bg-20-4057-2023, 2023
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Based on a large dataset of seasonally resolved methane (CH4) pore water concentrations in a reservoir's sediment, we assess the significance of CH4 emissions due to reservoir flushing. In the studied reservoir, CH4 emissions caused by one flushing operation can represent 7 %–14 % of the annual CH4 emissions and depend on the timing of the flushing operation. In reservoirs with high sediment loadings, regular flushing may substantially contribute to the overall CH4 emissions.
Matti Räsänen, Risto Vesala, Petri Rönnholm, Laura Arppe, Petra Manninen, Markus Jylhä, Jouko Rikkinen, Petri Pellikka, and Janne Rinne
Biogeosciences, 20, 4029–4042, https://doi.org/10.5194/bg-20-4029-2023, https://doi.org/10.5194/bg-20-4029-2023, 2023
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Fungus-growing termites recycle large parts of dead plant material in African savannas and are significant sources of greenhouse gases. We measured CO2 and CH4 fluxes from their mounds and surrounding soils in open and closed habitats. The fluxes scale with mound volume. The results show that emissions from mounds of fungus-growing termites are more stable than those from other termites. The soil fluxes around the mound are affected by the termite colonies at up to 2 m distance from the mound.
Tim René de Groot, Anne Margriet Mol, Katherine Mesdag, Pierre Ramond, Rachel Ndhlovu, Julia Catherine Engelmann, Thomas Röckmann, and Helge Niemann
Biogeosciences, 20, 3857–3872, https://doi.org/10.5194/bg-20-3857-2023, https://doi.org/10.5194/bg-20-3857-2023, 2023
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This study investigates methane dynamics in the Wadden Sea. Our measurements revealed distinct variations triggered by seasonality and tidal forcing. The methane budget was higher in warmer seasons but surprisingly high in colder seasons. Methane dynamics were amplified during low tides, flushing the majority of methane into the North Sea or releasing it to the atmosphere. Methanotrophic activity was also elevated during low tide but mitigated only a small fraction of the methane efflux.
Frederic Thalasso, Brenda Riquelme, Andrés Gómez, Roy Mackenzie, Francisco Javier Aguirre, Jorge Hoyos-Santillan, Ricardo Rozzi, and Armando Sepulveda-Jauregui
Biogeosciences, 20, 3737–3749, https://doi.org/10.5194/bg-20-3737-2023, https://doi.org/10.5194/bg-20-3737-2023, 2023
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A robust skirt-chamber design to capture and quantify greenhouse gas emissions from peatlands is presented. Compared to standard methods, this design improves the spatial resolution of field studies in remote locations while minimizing intrusion.
Gesa Schulz, Tina Sanders, Yoana G. Voynova, Hermann W. Bange, and Kirstin Dähnke
Biogeosciences, 20, 3229–3247, https://doi.org/10.5194/bg-20-3229-2023, https://doi.org/10.5194/bg-20-3229-2023, 2023
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Nitrous oxide (N2O) is an important greenhouse gas. However, N2O emissions from estuaries underlie significant uncertainties due to limited data availability and high spatiotemporal variability. We found the Elbe Estuary (Germany) to be a year-round source of N2O, with the highest emissions in winter along with high nitrogen loads. However, in spring and summer, N2O emissions did not decrease alongside lower nitrogen loads because organic matter fueled in situ N2O production along the estuary.
Alex Mavrovic, Oliver Sonnentag, Juha Lemmetyinen, Jennifer L. Baltzer, Christophe Kinnard, and Alexandre Roy
Biogeosciences, 20, 2941–2970, https://doi.org/10.5194/bg-20-2941-2023, https://doi.org/10.5194/bg-20-2941-2023, 2023
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This review supports the integration of microwave spaceborne information into carbon cycle science for Arctic–boreal regions. The microwave data record spans multiple decades with frequent global observations of soil moisture and temperature, surface freeze–thaw cycles, vegetation water storage, snowpack properties, and land cover. This record holds substantial unexploited potential to better understand carbon cycle processes.
Zoé Rehder, Thomas Kleinen, Lars Kutzbach, Victor Stepanenko, Moritz Langer, and Victor Brovkin
Biogeosciences, 20, 2837–2855, https://doi.org/10.5194/bg-20-2837-2023, https://doi.org/10.5194/bg-20-2837-2023, 2023
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We use a new model to investigate how methane emissions from Arctic ponds change with warming. We find that emissions increase substantially. Under annual temperatures 5 °C above present temperatures, pond methane emissions are more than 3 times higher than now. Most of this increase is caused by an increase in plant productivity as plants provide the substrate microbes used to produce methane. We conclude that vegetation changes need to be included in predictions of pond methane emissions.
Julian Koch, Lars Elsgaard, Mogens H. Greve, Steen Gyldenkærne, Cecilie Hermansen, Gregor Levin, Shubiao Wu, and Simon Stisen
Biogeosciences, 20, 2387–2403, https://doi.org/10.5194/bg-20-2387-2023, https://doi.org/10.5194/bg-20-2387-2023, 2023
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Utilizing peatlands for agriculture leads to large emissions of greenhouse gases worldwide. The emissions are triggered by lowering the water table, which is a necessary step in order to make peatlands arable. Many countries aim at reducing their emissions by restoring peatlands, which can be achieved by stopping agricultural activities and thereby raising the water table. We estimate a total emission of 2.6 Mt CO2-eq for organic-rich peatlands in Denmark and a potential reduction of 77 %.
Mélissa Laurent, Matthias Fuchs, Tanja Herbst, Alexandra Runge, Susanne Liebner, and Claire C. Treat
Biogeosciences, 20, 2049–2064, https://doi.org/10.5194/bg-20-2049-2023, https://doi.org/10.5194/bg-20-2049-2023, 2023
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In this study we investigated the effect of different parameters (temperature, landscape position) on the production of greenhouse gases during a 1-year permafrost thaw experiment. For very similar carbon and nitrogen contents, our results show a strong heterogeneity in CH4 production, as well as in microbial abundance. According to our study, these differences are mainly due to the landscape position and the hydrological conditions established as a result of the topography.
Michael Moubarak, Seeta Sistla, Stefano Potter, Susan M. Natali, and Brendan M. Rogers
Biogeosciences, 20, 1537–1557, https://doi.org/10.5194/bg-20-1537-2023, https://doi.org/10.5194/bg-20-1537-2023, 2023
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Tundra wildfires are increasing in frequency and severity with climate change. We show using a combination of field measurements and computational modeling that tundra wildfires result in a positive feedback to climate change by emitting significant amounts of long-lived greenhouse gasses. With these effects, attention to tundra fires is necessary for mitigating climate change.
Hanna I. Campen, Damian L. Arévalo-Martínez, and Hermann W. Bange
Biogeosciences, 20, 1371–1379, https://doi.org/10.5194/bg-20-1371-2023, https://doi.org/10.5194/bg-20-1371-2023, 2023
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Carbon monoxide (CO) is a climate-relevant trace gas emitted from the ocean. However, oceanic CO cycling is understudied. Results from incubation experiments conducted in the Fram Strait (Arctic Ocean) indicated that (i) pH did not affect CO cycling and (ii) enhanced CO production and consumption were positively correlated with coloured dissolved organic matter and nitrate concentrations. This suggests microbial CO uptake to be the driving factor for CO cycling in the Arctic Ocean.
Yihong Zhu, Ruihua Liu, Huai Zhang, Shaoda Liu, Zhengfeng Zhang, Fei-Hai Yu, and Timothy G. Gregoire
Biogeosciences, 20, 1357–1370, https://doi.org/10.5194/bg-20-1357-2023, https://doi.org/10.5194/bg-20-1357-2023, 2023
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With global warming, the risk of flooding is rising, but the response of the carbon cycle of aquatic and associated riparian systems
to flooding is still unclear. Based on the data collected in the Lijiang, we found that flooding would lead to significant carbon emissions of fluvial areas and riparian areas during flooding, but carbon capture may happen after flooding. In the riparian areas, the surviving vegetation, especially clonal plants, played a vital role in this transformation.
Lauri Heiskanen, Juha-Pekka Tuovinen, Henriikka Vekuri, Aleksi Räsänen, Tarmo Virtanen, Sari Juutinen, Annalea Lohila, Juha Mikola, and Mika Aurela
Biogeosciences, 20, 545–572, https://doi.org/10.5194/bg-20-545-2023, https://doi.org/10.5194/bg-20-545-2023, 2023
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We measured and modelled the CO2 and CH4 fluxes of the terrestrial and aquatic ecosystems of the subarctic landscape for 2 years. The landscape was an annual CO2 sink and a CH4 source. The forest had the largest contribution to the landscape-level CO2 sink and the peatland to the CH4 emissions. The lakes released 24 % of the annual net C uptake of the landscape back to the atmosphere. The C fluxes were affected most by the rainy peak growing season of 2017 and the drought event in July 2018.
Artem G. Lim, Ivan V. Krickov, Sergey N. Vorobyev, Mikhail A. Korets, Sergey Kopysov, Liudmila S. Shirokova, Jan Karlsson, and Oleg S. Pokrovsky
Biogeosciences, 19, 5859–5877, https://doi.org/10.5194/bg-19-5859-2022, https://doi.org/10.5194/bg-19-5859-2022, 2022
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In order to quantify C transport and emission and main environmental factors controlling the C cycle in Siberian rivers, we investigated the largest tributary of the Ob River, the Ket River basin, by measuring spatial and seasonal variations in carbon CO2 and CH4 concentrations and emissions together with hydrochemical analyses. The obtained results are useful for large-scale modeling of C emission and export fluxes from permafrost-free boreal rivers of an underrepresented region of the world.
Robert J. Parker, Chris Wilson, Edward Comyn-Platt, Garry Hayman, Toby R. Marthews, A. Anthony Bloom, Mark F. Lunt, Nicola Gedney, Simon J. Dadson, Joe McNorton, Neil Humpage, Hartmut Boesch, Martyn P. Chipperfield, Paul I. Palmer, and Dai Yamazaki
Biogeosciences, 19, 5779–5805, https://doi.org/10.5194/bg-19-5779-2022, https://doi.org/10.5194/bg-19-5779-2022, 2022
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Wetlands are the largest natural source of methane, one of the most important climate gases. The JULES land surface model simulates these emissions. We use satellite data to evaluate how well JULES reproduces the methane seasonal cycle over different tropical wetlands. It performs well for most regions; however, it struggles for some African wetlands influenced heavily by river flooding. We explain the reasons for these deficiencies and highlight how future development will improve these areas.
Saúl Edgardo Martínez Castellón, José Henrique Cattanio, José Francisco Berrêdo, Marcelo Rollnic, Maria de Lourdes Ruivo, and Carlos Noriega
Biogeosciences, 19, 5483–5497, https://doi.org/10.5194/bg-19-5483-2022, https://doi.org/10.5194/bg-19-5483-2022, 2022
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We seek to understand the influence of climatic seasonality and microtopography on CO2 and CH4 fluxes in an Amazonian mangrove. Topography and seasonality had a contrasting influence when comparing the two gas fluxes: CO2 fluxes were greater in high topography in the dry period, and CH4 fluxes were greater in the rainy season in low topography. Only CO2 fluxes were correlated with soil organic matter, the proportion of carbon and nitrogen, and redox potential.
Matthias Koschorreck, Klaus Holger Knorr, and Lelaina Teichert
Biogeosciences, 19, 5221–5236, https://doi.org/10.5194/bg-19-5221-2022, https://doi.org/10.5194/bg-19-5221-2022, 2022
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At low water levels, parts of the bottom of rivers fall dry. These beaches or mudflats emit the greenhouse gas carbon dioxide (CO2) to the atmosphere. We found that those emissions are caused by microbial reactions in the sediment and that they change with time. Emissions were influenced by many factors like temperature, water level, rain, plants, and light.
Wantong Zhang, Zhengyi Hu, Joachim Audet, Thomas A. Davidson, Enze Kang, Xiaoming Kang, Yong Li, Xiaodong Zhang, and Jinzhi Wang
Biogeosciences, 19, 5187–5197, https://doi.org/10.5194/bg-19-5187-2022, https://doi.org/10.5194/bg-19-5187-2022, 2022
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This work focused on the CH4 and N2O emissions from alpine peatlands in response to the interactive effects of altered water table levels and increased nitrogen deposition. Across the 2-year mesocosm experiment, nitrogen deposition showed nonlinear effects on CH4 emissions and linear effects on N2O emissions, and these N effects were associated with the water table levels. Our results imply the future scenario of strengthened CH4 and N2O emissions from an alpine peatland.
Karel Castro-Morales, Anna Canning, Sophie Arzberger, Will A. Overholt, Kirsten Küsel, Olaf Kolle, Mathias Göckede, Nikita Zimov, and Arne Körtzinger
Biogeosciences, 19, 5059–5077, https://doi.org/10.5194/bg-19-5059-2022, https://doi.org/10.5194/bg-19-5059-2022, 2022
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Permafrost thaw releases methane that can be emitted into the atmosphere or transported by Arctic rivers. Methane measurements are lacking in large Arctic river regions. In the Kolyma River (northeast Siberia), we measured dissolved methane to map its distribution with great spatial detail. The river’s edge and river junctions had the highest methane concentrations compared to other river areas. Microbial communities in the river showed that the river’s methane likely is from the adjacent land.
Sonja Gindorf, Hermann W. Bange, Dennis Booge, and Annette Kock
Biogeosciences, 19, 4993–5006, https://doi.org/10.5194/bg-19-4993-2022, https://doi.org/10.5194/bg-19-4993-2022, 2022
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Methane is a climate-relevant greenhouse gas which is emitted to the atmosphere from coastal areas such as the Baltic Sea. We measured the methane concentration in the water column of the western Kiel Bight. Methane concentrations were higher in September than in June. We found no relationship between the 2018 European heatwave and methane concentrations. Our results show that the methane distribution in the water column is strongly affected by temporal and spatial variabilities.
Margaret Capooci and Rodrigo Vargas
Biogeosciences, 19, 4655–4670, https://doi.org/10.5194/bg-19-4655-2022, https://doi.org/10.5194/bg-19-4655-2022, 2022
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Tidal salt marsh soil emits greenhouse gases, as well as sulfur-based gases, which play roles in global climate but are not well studied as they are difficult to measure. Traditional methods of measuring these gases worked relatively well for carbon dioxide, but less so for methane, nitrous oxide, carbon disulfide, and dimethylsulfide. High variability of trace gases complicates the ability to accurately calculate gas budgets and new approaches are needed for monitoring protocols.
Janne Rinne, Patryk Łakomiec, Patrik Vestin, Joel D. White, Per Weslien, Julia Kelly, Natascha Kljun, Lena Ström, and Leif Klemedtsson
Biogeosciences, 19, 4331–4349, https://doi.org/10.5194/bg-19-4331-2022, https://doi.org/10.5194/bg-19-4331-2022, 2022
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The study uses the stable isotope 13C of carbon in methane to investigate the origins of spatial and temporal variation in methane emitted by a temperate wetland ecosystem. The results indicate that methane production is more important for spatial variation than methane consumption by micro-organisms. Temporal variation on a seasonal timescale is most likely affected by more than one driver simultaneously.
Kukka-Maaria Kohonen, Roderick Dewar, Gianluca Tramontana, Aleksanteri Mauranen, Pasi Kolari, Linda M. J. Kooijmans, Dario Papale, Timo Vesala, and Ivan Mammarella
Biogeosciences, 19, 4067–4088, https://doi.org/10.5194/bg-19-4067-2022, https://doi.org/10.5194/bg-19-4067-2022, 2022
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Four different methods for quantifying photosynthesis (GPP) at ecosystem scale were tested, of which two are based on carbon dioxide (CO2) and two on carbonyl sulfide (COS) flux measurements. CO2-based methods are traditional partitioning, and a new method uses machine learning. We introduce a novel method for calculating GPP from COS fluxes, with potentially better applicability than the former methods. Both COS-based methods gave on average higher GPP estimates than the CO2-based estimates.
Lutz Beckebanze, Benjamin R. K. Runkle, Josefine Walz, Christian Wille, David Holl, Manuel Helbig, Julia Boike, Torsten Sachs, and Lars Kutzbach
Biogeosciences, 19, 3863–3876, https://doi.org/10.5194/bg-19-3863-2022, https://doi.org/10.5194/bg-19-3863-2022, 2022
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In this study, we present observations of lateral and vertical carbon fluxes from a permafrost-affected study site in the Russian Arctic. From this dataset we estimate the net ecosystem carbon balance for this study site. We show that lateral carbon export has a low impact on the net ecosystem carbon balance during the complete study period (3 months). Nevertheless, our results also show that lateral carbon export can exceed vertical carbon uptake at the beginning of the growing season.
Shahar Baram, Asher Bar-Tal, Alon Gal, Shmulik P. Friedman, and David Russo
Biogeosciences, 19, 3699–3711, https://doi.org/10.5194/bg-19-3699-2022, https://doi.org/10.5194/bg-19-3699-2022, 2022
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Static chambers are the most common tool used to measure greenhouse gas (GHG) fluxes. We tested the impact of such chambers on nitrous oxide emissions in drip irrigation. Field measurements and 3-D simulations show that the chamber base drastically affects the water and nutrient distribution in the soil and hence the measured GHG fluxes. A nomogram is suggested to determine the optimal diameter of a cylindrical chamber that ensures minimal disturbance.
Cited articles
Åberg, J., Jansson, M., and Jonsson, A.: Importance of water temperature
and thermal stratification dynamics for temporal variation of surface water
CO2 in a boreal lake, J. Geophys. Res., 115, G02024,
https://doi.org/10.1029/2009JG001085, 2010.
Abril, G., Guérin, F., Richard, S., Delmas, R., Galy-Lacaux, C., Gosse,
P., Tremblay, A., Varfalvy, L., Dos Santos, M. A., and Matvienko, B.: Carbon
dioxide and methane emissions and the carbon budget of a 10-year old tropical
reservoir (Petit Saut, French Guiana), Global Biogeochem. Cy., 19, GB4007,
https://doi.org/10.1029/2005GB002457, 2005.
Assireu, A. T., Alcântara, E., Novo, E. M. L. M., Roland, F., Pacheco, F.
S., Stech, J. L., and Lorenzzetti, J. A.: Hydro-physical processes at the
plunge point: an analysis using satellite and in situ data, Hydrol. Earth
Syst. Sci., 15, 3689–3700, https://doi.org/10.5194/hess-15-3689-2011, 2011.
Aufdenkampe, A. K., Mayorga, E., Raymond, P. A., Melack, J. M., Doney, S. C.,
Alin, S. R., Aalto, R. E., and Yoo, K.: Riverine coupling of biogeochemical
cycles between land, oceans, and atmosphere, Front. Ecol. Environ., 9,
53–60, 2011.
Barros, N., Cole, J. J., Tranvik, L. J., Prairie, Y. T., Bastviken, D.,
Huszar, V. L. M., del Giorgio, P., and Roland, F.: Carbon emission from
hydroelectric reservoirs linked to reservoir age and latitude, Nat. Geosci.,
4, 593–596, 2011.
Battin, T. J., Luyssaert, S., Kaplan, L. A., Aufdenkampe, A. K., Richter, A.,
and Tranvik, L. J.: The boundless carbon cycle, Nat. Geosci., 2, 598–600,
2009.
Chanudet, V., Desloux, S., Harby, A., Sundt, H., Hansen, B. H., Brakstad, O.,
Serca, D., and Guerin, F.: Gross CO2 and CH4 emissions from
the Nam Ngum and Nam Leuk sub-tropical reservoirs in Lao PDR, Sci. Total
Environ., 409, 5382–5391, 2011.
Chen, H., Wu, Y., Yuan, X., Gao, Y., Wu, N., and Zhu, D.: Methane emissions
from newly created marshes in the drawdown area of the Three Gorges
Reservoir, J. Geophys. Res., 114, D18301, https://doi.org/10.1029/2009JD012410, 2009.
Cole, J. J., Caraco, N. F., Kling, G. W., and Kratz, T. K.: Carbon dioxide
supersaturation in the surface waters of lakes, Science, 265, 1568–1570,
1994.
Cole, J. J., Prairie, Y. T., Caraco, N. F., McDowell, W. H., Tranvik, L. J.,
Striegl, R. G., Duarte, C. M., Kortelainen, P., Downing, J. A., Middelburg,
J. J., Melack, J., and Middelburg, J. J.: Plumbing the global carbon cycle:
integrating inland waters into the terrestrial carbon budget, Ecosystems, 10,
172–185, 2007.
Deemer, B. R., Harrison, J. A., Li, S., Beaulieu, J. J., DelSontro, T.,
Barros, N., Bezerra-Neto, J. F., Powers, S. M., dos Santos, M. A., and Vonk,
J. A.: Greenhouse gas emissions from reservoir water surfaces: a new global
synthesis, BioScience, 66, 949–964, 2016.
Del Giorgio, P. A. and Williams, P. J. le B.: Respiration in aquatic
ecosystems, Oxford University Press, USA, 2005.
Demarty, M. and Bastien, J.: GHG emissions from hydroelectric reservoirs in
tropical and equatorial regions: Review of 20 years of CH4 emission
measurements, Energ. Policy, 39, 4197–4206, 2011.
Fearnside, P. M.: Greenhouse-gas emissions from Amazonian hydroelectric
reservoirs: The example of Brazil's Tucuruí Dam as compared to fossil
fuel alternatives, Environ. Conserv., 24, 64–75, 1997.
Fu, K. and He, D.: Analysis and prediction of sediment trapping efficiencies
of the reservoirs in the mainstreamof the Lancang River, Chinese Science
Bulletin, 52, 134–140, 2007.
Gao, Q., Tao, Z., Zhang, S., Xie, C., Lin, P., and Mao, H.: The Damming
Effects on the Dynamics of Riverine Carbon in a Mountainous River: A Case
Study in the Zengjiang River, South China, Quaternary Science, 37, 331–342,
2017.
Guérin, F., Abril, G., Richard, S., Burban, B., Reynouard, C., Seyler,
P., and Delmas, R.: Methane and carbon dioxide emissions from tropical
reservoirs: significance of downstream rivers, Geophys. Res. Lett., 33, 2006.
Guo, J., Jiang, T., Li, Z., Chen, Y., and Sun, Z.: Analysis on partial
pressure of CO2 and influencing factors during spring phytoplankton
bloom in the backwater area of Xiaojiang River in Three Gorges Reservoir,
Advances in Water Science, 22, 829–838, 2011.
He, D. and Tang, Q.: Chinese International Rivers, Science Press, Beijing,
China, 2000.
Holgerson, M. A. and Raymond, P. A.: Large contribution to inland water
CO2 and CH4 emissions from very small ponds, Nat. Geosci., 9,
222–226, https://doi.org/10.1038/ngeo2654, 2016.
Hu, H.: Geological Hazard Risk Study of the Gongguoqiao Hydropower Station,
Master, Lanzhou Univeristy, 2010.
Hu, Y. and Cheng, H.: The urgency of assessing the greenhouse gas budgets of
hydroelectric reservoirs in China, Nat. Clim. Change, 3, 708–712, 2013.
Huttunen, J. T., Väisänen, T. S., Hellsten, S. K., Heikkinen, M.,
Nykänen, H., Jungner, H., Niskanen, A., Virtanen, M. O., Lindqvist, O.
V., Nenonen, O., and Martikainen, P. J.: Fluxes of CH4, CO2,
and N2O in hydroelectric reservoirs Lokka and Porttipahta in the
northern boreal zone in Finland, Global Biogeochem. Cy., 16, 3-1–3-17, 2002.
Jiang, T., Guo, J., Li, Z., Fang, F., Bai, L., and Liu, J.: Air-Water Surface
Greenhouse Gas Flux in Pengxi River at Different Operational Stages of the
Three Gorges Reservoir, Environmental. Sci., 33, 1463–1470, 2012.
Kelly, C. A., Rudd, J. W., St Louis, V. L., and Moore, T.: Turning attention
to reservoir surfaces, a neglected area in greenhouse studies, Eos T. Am.
Geophys. Un., 75, 332–333, 1994.
Lehner, B. and Döll, P.: Development and validation of a global database
of lakes, reservoirs and wetlands, J. Hydrol., 296, 1–22, 2004.
Lewis, E. and Wallace, D. W. R.: Program developed for CO2 system
calculations, ORNL/CDIAC-105, Carbon Dioxide Information Analysis Center, Oak
Ridge National Laboratory, U.S., 1998.
Li, S. and Zhang, Q.: Partial pressure of CO2 and CO2
emission in a monsoon-driven hydroelectric reservoir (Danjiangkou Reservoir),
China, Ecol. Eng., 71, 401–414, 2014.
Li, S., Zhang, Q., Bush, R. T., and Sullivan, L. A.: Methane and CO2
emissions from China's hydroelectric reservoirs: a new quantitative
synthesis, Environ. Sci. Pollut. R., 22, 5325–5339, 2015.
Li, S. Y., Lu, X. X., and Bush, R. T.: CO2 partial pressure and
CO2 emission in the Lower Mekong River, J. Hydrol., 504, 40–56,
2013.
Liu, H., Zhang, Q., Katul, G. G., Cole, J. J., Chapin III, F. S., and
MacIntyre, S.: Large CO2 effluxes at night and during synoptic
weather events significantly contribute to CO2 emissions from a
reservoir, Environ. Res. Lett., 11, 064001,
https://doi.org/10.1088/1748-9326/11/6/064001, 2016a.
Liu, S. D., Lu, X. X., Xia, X. H., Zhang, S. R., Ran, L. S., and Yang, X. K.:
Dynamic. biogeochemical controls on river pCO2 and recent changes under
aggravating river impoundment: an example of the subtropical Yangtze River,
Global Biogeochem. Cy., 30, 880–897, https://doi.org/10.1002/2016GB005388, 2016b.
Liu, S. D., Lu, X X., Xia, X., Yang, X., and Ran, L.: Hydrological and
geomorphological control on CO2 outgassing from low-gradient large
rivers: An example of the Yangtze River system, J. Hydrol., 550, 26–41,
2017.
Liu, W., Pu, J.-B., Yu, S., Zhang, C., Au, Y.-Y., Yuan, D.-X., Yang, H., and
Tang, W.: Preliminary Research on the Feature of Dissolved Inorganic Carbon
in Wulixia Reservoir in Summer, Guangxi, China, Environmental Science, 35,
2959–2966, 2014 (in Chinese).
Lu, X. X. and Siew, R. Y.: Water discharge and sediment flux changes over the
past decades in the Lower Mekong River: possible impacts of the Chinese dams,
Hydrol. Earth Syst. Sci., 10, 181–195, https://doi.org/10.5194/hess-10-181-2006, 2006.
Lu, X. X., Li, S., Kummu, M., Padawangi, R., and Wang, J. J.: Observed
changes in the water flow at Chiang Saen in the lower Mekong: Impacts of
Chinese dams?, Quatern. Int., 336, 145–157, 2014.
Maavara, T., Parsons, C. T., Ridenour, C., Stojanovic, S., Dürr, H. H.,
Powley, H. R., and Van Cappellen, P.: Global phosphorus retention by river
damming, P. Natl. Acad. Sci. USA, 112, 15603–15608, 2015.
Maavara, T., Lauerwald, R., Regnier, P., and Van Cappellen, P.: Global
perturbation of organic carbon cycling by river damming, Nat. Commun., 8,
15347, https://doi.org/10.1038/ncomms15347, 2017.
Mei, H., Wang, F., Yao, C., and Wang, B.: Diffusion Flux of Partial Pressure
of Dissolved Carbon Dioxide in Wanan Reservoir in Spring, Environm. Sci., 32,
58–63, 2011.
Mendonça, R., Barros, N., Vidal, L. O., Pacheco, F., Kosten, S., and
Roland, F.: Greenhouse Gas Emissions from Hydroelectric Reservoirs: What
Knowledge Do We Have and What is Lacking?, in: Greenhouse Gases – Emission,
Measurement and Management, edited by: Liu, G., InTech, available at:
https://www.intechopen.com/download/pdf/32342 (last access: 14 March
2019), 2012a.
Mendonça, R., Kosten, S., Sobek, S., Barros, N., Cole, J. J., Tranvik,
L., and Roland, F.: Hydroelectric carbon sequestration, Nat. Geosci., 5,
838–840, 2012b.
MEP (Ministry of Environmental Protection of People's Republic of China):
GB11893-89, in: Water Quality-Determination of total phosphorous: Ammonium
molybdate spectrophotometric method, Standards Press of China, Beijing, 1989.
MEP (Ministry of Environmental Protection of People's Republic of China):
HJ636-2012, in: Water Quality-Determination of total nitrogen: Alkaline
potassium persiflage digestion – UV spectrometric method, Standards Press of
China, Beijing, 2012.
Mulholland, P. J. and Elwood, J. W.: The role of lake and reservoir sediments
as sinks in the perturbed global carbon cycle, Tellus, 34, 490–499, 1982.
Pacheco, F. S., Roland, F., and Downing, J. A.: Eutrophication reverses
whole-lake carbon budgets, Inland waters, 4, 41–48,
https://doi.org/10.5268/IW-4.1.614, 2014.
Pacheco, F. S., Soares, M. C. S., Assireu, A. T., Curtarelli, M. P., Roland,
F., Abril, G., Stech, J. L., Alvalá, P. C., and Ometto, J. P.: The
effects of river inflow and retention time on the spatial heterogeneity of
chlorophyll and water–air CO2 fluxes in a tropical hydropower
reservoir, Biogeosciences, 12, 147–162, https://doi.org/10.5194/bg-12-147-2015, 2015.
Peng, X., Wang, B., Liu, C., Liu, X., and Wang, F.: Diurnal variations of
pCO2 in relation to environmental factors in the cascade
reservoirs along the Wujiang River, China, Chinese Journal of Geochemistry,
31, 41–47, 2012.
Qu, B., Aho, K. S., Li, C., Kang, S., Sillanpää, M., Yan, F., and
Raymond, P. A.: Greenhouse gases emissions in rivers of the Tibetan Plateau,
Scientific Reports, 7, 16573, https://doi.org/10.1038/s41598-017-16552-6, 2017.
Ran, J., Lin, C., Guo, J., Chen, Y., and Jiang, T.: Spatial and temporal
variation of carbon dioxide partial pressure over the Xiaojiang River
backwater area of the Three Gorges Reservoir, Resource and Environment in the
Yangtze Basin, 20, 976–982, 2011.
Ran, L., Tian, M., Fang, N., Wang, S., Lu, X., Yang, X., and Cho, F.:
Riverine carbon export in the arid to semiarid Wuding River catchment on the
Chinese Loess Plateau, Biogeosciences, 15, 3857–3871,
https://doi.org/10.5194/bg-15-3857-2018, 2018.
Ran, L. S., Li, L., Tian, M., Yang, X., Yu, R., Zhao, J., Wang, L., and Lu,
X. X.: Riverine CO2 emissions in the Wuding River catchment on the
Loess Plateau: Environmental controls and dam impoundment impact, J. Geophys.
Res.-Biogeo., 122, 1439–1455, 2017.
Räsänen, T. A., Varis, O., Scherer, L., and Kummu, M.: Greenhouse gas
emissions of hydropower in the Mekong River Basin, Environ. Res. Lett., 13,
034030, https://doi.org/10.1088/1748-9326/aaa817, 2018.
Raymond, P. A., Hartmann, J., Lauerwald, R., Sobek, S., McDonald, C., Hoover,
M., Butman, D., Striegl, R., Mayorga, E., Humborg, C., Kortelainen, P.,
Dürr, H., Meybeck, M., Ciais, P., and Guth, P.: Global carbon dioxide
emissions from inland waters, Nature, 503, 355–359, 2013.
Regnier, P., Andersson, A. J., Arndt, S., Arnosti, C., Borges, A. V., Dale,
A. W., Gallego-Sala, A., Goddéris, Y.,Goossens, N., Hartmann, J., Heinze,
C., Ilyina, T., Joos, F., LaRowe, D. E., Leifeld, J., Meysman, F. J. R.,
Munhoven, G., Raymond, P. A., Spahni, R., Suntharalingam, P., and Thullner,
M.: Anthropogenic perturbation of the carbon fluxes from land to ocean,
Nature Geoscience, 6, 597–607, https://doi.org/10.1038/ngeo1830, 2013.
Roland, F., Vidal, L. O., Pacheco, F. S., Barros, N. O., Assireu, A., Ometto,
J. P. H. B., Cimbleris, A. C. P., and Cole, J. J.: Variability of carbon
dioxide flux from tropical (Cerrado) hydroelectric reservoirs, Aquat. Sci.,
72, 283–293, https://doi.org/10.1007/s00027-010-0140-0, 2010.
Rudd, J. W., Hecky, R., Harris, R., and Kelly, C.: Are hydroelectric
reservoirs significant sources of greenhouse gases, Ambio, 22, 246–248,
1993, 1993.
Schelker, J., Singer, G. A., Ulseth, A. J., Hengsberger, S., and Battin, T.
J.: CO2 evasion from a steep, high gradient stream network:
importance of seasonal and diurnal variation in aquatic pCO2
and gas transfer, Limnol. Oceanogr., 61, 1826–1838, 2016.
Şentürk, F.: Hydraulics of dams and reservoirs, Water Resources
Publications, Highlands Ranch, Colo 1994.
Striegl, R. G. and Michmerhuizen, C. M.: Hydrologic influence on methane and
carbon dioxide dynamics at two north-central Minnesota lakes, Limnol.
Oceanogr., 43, 1519–1529, 1998.
Summerfield, M. A.: Global geomorphology: an introduction to the study of
landforms, Longman Scientific & Technical, Harlow, Essex, England, New
York, 1991.
Tadonleke, R. D., Marty, J. M., and Planas, D.: Assessing factors underlying
variation of CO2 emissions in boreal lakes vs. reservoirs, FEMS
Microbiol. Ecol., 79, 282–297, 2012.
Teodoru, C. R., Prairie, Y. T., and Del Giorgio, P. A.: Spatial Heterogeneity
of Surface CO2 Fluxes in a Newly Created Eastmain-1 Reservoir in
Northern Quebec, Canada, Ecosystems, 14, 28–46, 2011.
Thornton, K. W., Kimmel, B. L., and Payne, F. E.: Reservoir limnology:
ecological perspectives, John Wiley & Sons, New York, 1990.
Tranvik, L. J., Downing, J, A., Cotner, J. B., Loiselle, S. A., Striegl, R.
G., Ballatore, T. J., Dillon, P., Finlay, K., Fortino, K., Knoll, L. B.,
Kortelainen, P. L.,Kutser, T., Larsen, S., Laurion, I., Leech, D. M.,
McCallister, S. L., McKnight, D. M., Melack, J. M., Overholt, E., Porter, J.
A., Prairie, Y., Renwick, W. H., Roland, F., Sherman, B. S., Schindler, D.
W., Sobek, S., Tremblay, A., Vanni, M. J., Verschoor, A. M., von Wachenfeldt,
E., and Weyhenmeyer, G. A. : Lakes and reservoirs as regulators of carbon
cycling and climate, Limnol. Oceanogr., 54, 2298–2314, 2009.
Tremblay, A., Varfalvy, L., Roehm, C., and Garneu, M.: Greenhouse Gas
Emissions – Fluxes and Rrocesses, Springer, New York; Berlin, 2005.
Varis, O., Kummu, M., Härkönen, S., and Huttunen, J. T.: Greenhouse
gas emissions from reservoirs, in: Impacts of Large Dams: A Global
Assessment, Springer, Berlin, Heidelberg, 69–94, 2012.
Vincent, L. S. L., Carol, A. K., Eric, D., John, W. M. R., and David, M. R.:
Reservoir surfaces as sources of greenhouse gases to the atmosphere: A global
estimate, BioScience, 50, 766–775, 2000.
Vörösmarty, C. J., Meybeck, M., Fekete, B., Sharma, K., Green, P.,
and Syvitski, J. P.: Anthropogenic sediment retention: major global impact
from registered river impoundments, Global Planet. Change, 39, 169–190,
2003.
Wang, B., Wang, Y., Wang, F., Liu, X., Liu, C.-Q., Guan, J., and Yu, Y.:
Carbon dioxide emission from surface water in cascade reservoirs–river
system on the Maotiao River, southwest of China, Atmos. Environ., 45,
3827–3834, https://doi.org/10.1016/j.atmosenv.2011.04.014, 2011.
Wang, S., Wan, G., Liu, C., Yang, W., Zhu, Z., Xiao, H., and Tao, F.:
Geochemical variation of CO2 and its atmospheric effect of lakes on
the Yunnan-Guizhou Plateau, Quaternary Science, 23, p. 1, 2003 (in Chinese).
Xing, Y., Xie, P., Yang, H., Ni, L., Wang, Y., and Rong, K.: Methane and
carbon dioxide fluxes from a shallow hypereutrophic subtropical Lake in
China, Atmos. Environ., 39, 5532–5540, 2005.
Xu, J., Zhang, P., and Wang, Y.: Land use and land cover in Lancang Watershed
of Yunnan. Acta Botonica Yunnanica, 25, 145–154, 2003.
Xu, Z.: Study of Carbon Dioxide and nitrous oxide emissions from Ecosystems
of Different Elevations in a Typical Water Level Fluctuating Zone in Three
Gorges Reservoir, Master thesis, Southwest University, 2013.
Yang, L., Lu, F., Wang, X., Duan, X., Song, W., Sun, B., Chen, S., Zhang, Q.,
Hou, P., Zheng, F., Zhang, Y., Zhou, X., Zhou, Y., and Ouyang, Z.: Surface
methane emissions from different land use types during various water levels
in three major drawdown areas of the Three Gorges Reservoir, J. Geophys.
Res., 117, D10109, https://doi.org/10.1029/2011JD017362, 2012.
Yang, M.: Spatial-temporal Variation of Greenhouse Gas Flux and Its
Environmental Factors at Miyun Water Reservoir [D], Master thesis, Beijing
Forestry University, 2011.
Yang, X. K. and Lu, X. X.: Drastic change in China's lakes and reservoirs
over the past decades, Scientific Reports, 4, 6041, https://doi.org/10.1038/srep06041,
2014.
Yang, X. K., Lu, X. X., and Ran, L. S.: Sustaining China's large rivers:
River development policy, impacts, institutional issues and strategies for
future improvement, Geoforum, 69, 1–4, 2016.
Yu, Y., Wang, F., Wang, B., and Li, G.: Response of Dissolved Inorganic
Carbon and Its Isotopic Spatial and Temporal Characteristics to the Earlier
Reservoir Process: A Case Study on a New Reservoir (Hongjiadu), Acta
Mineralogica Sinica, 29, 268–274, 2009 (in Chinese).
Zhao, Y., Wu, B. F., and Zeng, Y.: Spatial and temporal patterns of
greenhouse gas emissions from Three Gorges Reservoir of China,
Biogeosciences, 10, 1219–1230, https://doi.org/10.5194/bg-10-1219-2013, 2013.
Short summary
Damming did not significantly increase carbon dioxide emissions from the reservoir surface, as shown in a case study in a reservoir constrained within the narrow upper Mekong River valley. This finding might provide some evidence to the green credits for hydropower in China. One-year monitoring of carbon dioxide emissions from the water surface found that the higher emissions were concentrated at the riverine inlets in winter and more related to the mixing process of inflow and reservoir water.
Damming did not significantly increase carbon dioxide emissions from the reservoir surface, as...
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