Articles | Volume 17, issue 18
https://doi.org/10.5194/bg-17-4591-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-17-4591-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
21 Sep 2020
Research article |
| 21 Sep 2020
| 21 Sep 2020
Microbial dormancy and its impacts on northern temperate and boreal terrestrial ecosystem carbon budget
Junrong Zha
Department of Earth, Atmospheric, and Planetary Sciences and Department of
Agronomy, Purdue University, West Lafayette, IN 47907 USA
Department of Earth, Atmospheric, and Planetary Sciences and Department of
Agronomy, Purdue University, West Lafayette, IN 47907 USA
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Zeli Tan, Qianlai Zhuang, Daven K. Henze, Christian Frankenberg, Ed Dlugokencky, Colm Sweeney, Alexander J. Turner, Motoki Sasakawa, and Toshinobu Machida
Atmos. Chem. Phys., 16, 12649–12666, https://doi.org/10.5194/acp-16-12649-2016, https://doi.org/10.5194/acp-16-12649-2016, 2016
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X. Lu and Q. Zhuang
Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmdd-8-10411-2015, https://doi.org/10.5194/gmdd-8-10411-2015, 2015
Revised manuscript has not been submitted
T. J. Bohn, J. R. Melton, A. Ito, T. Kleinen, R. Spahni, B. D. Stocker, B. Zhang, X. Zhu, R. Schroeder, M. V. Glagolev, S. Maksyutov, V. Brovkin, G. Chen, S. N. Denisov, A. V. Eliseev, A. Gallego-Sala, K. C. McDonald, M.A. Rawlins, W. J. Riley, Z. M. Subin, H. Tian, Q. Zhuang, and J. O. Kaplan
Biogeosciences, 12, 3321–3349, https://doi.org/10.5194/bg-12-3321-2015, https://doi.org/10.5194/bg-12-3321-2015, 2015
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We evaluated 21 forward models and 5 inversions over western Siberia in terms of CH4 emissions and simulated wetland areas and compared these results to an intensive in situ CH4 flux data set, several wetland maps, and two satellite inundation products. In addition to assembling a definitive collection of methane emissions estimates for the region, we were able to identify the types of wetland maps and model features necessary for accurate simulations of high-latitude wetlands.
Q. Zhu, Q. Zhuang, D. Henze, K. Bowman, M. Chen, Y. Liu, Y. He, H. Matsueda, T. Machida, Y. Sawa, and W. Oechel
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acpd-14-22587-2014, https://doi.org/10.5194/acpd-14-22587-2014, 2014
Revised manuscript not accepted
Y. He, Q. Zhuang, J. W. Harden, A. D. McGuire, Z. Fan, Y. Liu, and K. P. Wickland
Biogeosciences, 11, 4477–4491, https://doi.org/10.5194/bg-11-4477-2014, https://doi.org/10.5194/bg-11-4477-2014, 2014
X. Zhu, Q. Zhuang, X. Lu, and L. Song
Biogeosciences, 11, 1693–1704, https://doi.org/10.5194/bg-11-1693-2014, https://doi.org/10.5194/bg-11-1693-2014, 2014
Q. Zhu and Q. Zhuang
Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmdd-6-6835-2013, https://doi.org/10.5194/gmdd-6-6835-2013, 2013
Revised manuscript not accepted
Q. Zhu and Q. Zhuang
Biogeosciences, 10, 7943–7955, https://doi.org/10.5194/bg-10-7943-2013, https://doi.org/10.5194/bg-10-7943-2013, 2013
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Plants at the land surface mediate between soil and the atmosphere regarding water and carbon transport. Since plant growth is a dynamic process, models need to consider these dynamics. Two models that predict water and carbon fluxes by considering plant temporal evolution were tested against observational data. Currently, dynamizing plants in these models did not enhance their representativeness, which is caused by a mismatch between implemented physical relations and observable connections.
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Representing soil organic carbon (SOC) dynamics in Earth system models (ESMs) is a key source of uncertainty in predicting carbon–climate feedbacks. Using machine learning, we develop and compare predictive relationships in observations (Obs) and ESMs. We find different relationships between environmental factors and SOC stocks in Obs and ESMs. SOC prediction in ESMs may be improved by representing the functional relationships of environmental controllers in a way consistent with observations.
Jacob A. Nelson, Sophia Walther, Fabian Gans, Basil Kraft, Ulrich Weber, Kimberly Novick, Nina Buchmann, Mirco Migliavacca, Georg Wohlfahrt, Ladislav Šigut, Andreas Ibrom, Dario Papale, Mathias Göckede, Gregory Duveiller, Alexander Knohl, Lukas Hörtnagl, Russell L. Scott, Weijie Zhang, Zayd Mahmoud Hamdi, Markus Reichstein, Sergio Aranda-Barranco, Jonas Ardö, Maarten Op de Beeck, Dave Billesbach, David Bowling, Rosvel Bracho, Christian Brümmer, Gustau Camps-Valls, Shiping Chen, Jamie Rose Cleverly, Ankur Desai, Gang Dong, Tarek S. El-Madany, Eugenie Susanne Euskirchen, Iris Feigenwinter, Marta Galvagno, Giacomo A. Gerosa, Bert Gielen, Ignacio Goded, Sarah Goslee, Christopher Michael Gough, Bernard Heinesch, Kazuhito Ichii, Marcin Antoni Jackowicz-Korczynski, Anne Klosterhalfen, Sara Knox, Hideki Kobayashi, Kukka-Maaria Kohonen, Mika Korkiakoski, Ivan Mammarella, Mana Gharun, Riccardo Marzuoli, Roser Matamala, Stefan Metzger, Leonardo Montagnani, Giacomo Nicolini, Thomas O'Halloran, Jean-Marc Ourcival, Matthias Peichl, Elise Pendall, Borja Ruiz Reverter, Marilyn Roland, Simone Sabbatini, Torsten Sachs, Marius Schmidt, Christopher R. Schwalm, Ankit Shekhar, Richard Silberstein, Maria Lucia Silveira, Donatella Spano, Torbern Tagesson, Gianluca Tramontana, Carlo Trotta, Fabio Turco, Timo Vesala, Caroline Vincke, Domenico Vitale, Enrique R. Vivoni, Yi Wang, William Woodgate, Enrico A. Yepez, Junhui Zhang, Donatella Zona, and Martin Jung
Biogeosciences, 21, 5079–5115, https://doi.org/10.5194/bg-21-5079-2024, https://doi.org/10.5194/bg-21-5079-2024, 2024
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The movement of water, carbon, and energy from the Earth's surface to the atmosphere, or flux, is an important process to understand because it impacts our lives. Here, we outline a method called FLUXCOM-X to estimate global water and CO2 fluxes based on direct measurements from sites around the world. We go on to demonstrate how these new estimates of net CO2 uptake/loss, gross CO2 uptake, total water evaporation, and transpiration from plants compare to previous and independent estimates.
Xin Chen, Tiexi Chen, Xiaodong Li, Yuanfang Chai, Shengjie Zhou, Renjie Guo, and Jie Dai
Biogeosciences, 21, 4285–4300, https://doi.org/10.5194/bg-21-4285-2024, https://doi.org/10.5194/bg-21-4285-2024, 2024
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We provide an ensemble-model-based GPP dataset (ERF_GPP) that explains 85.1 % of the monthly variation in GPP across 170 sites, which is higher than other GPP estimate models. In addition, ERF_GPP improves the phenomenon of “high-value underestimation and low-value overestimation” in GPP estimation to some extent. Overall, ERF_GPP provides a more reliable estimate of global GPP and will facilitate further development of carbon cycle research.
Reza Kusuma Nurrohman, Tomomichi Kato, Hideki Ninomiya, Lea Végh, Nicolas Delbart, Tatsuya Miyauchi, Hisashi Sato, Tomohiro Shiraishi, and Ryuichi Hirata
Biogeosciences, 21, 4195–4227, https://doi.org/10.5194/bg-21-4195-2024, https://doi.org/10.5194/bg-21-4195-2024, 2024
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SPITFIRE (SPread and InTensity of FIRE) was integrated into a spatially explicit individual-based dynamic global vegetation model to improve the accuracy of depicting Siberian forest fire frequency, intensity, and extent. Fires showed increased greenhouse gas and aerosol emissions in 2006–2100 for Representative Concentration Pathways. This study contributes to understanding fire dynamics, land ecosystem–climate interactions, and global material cycles under the threat of escalating fires.
Stefano Manzoni and M. Francesca Cotrufo
Biogeosciences, 21, 4077–4098, https://doi.org/10.5194/bg-21-4077-2024, https://doi.org/10.5194/bg-21-4077-2024, 2024
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Organic carbon and nitrogen are stabilized in soils via microbial assimilation and stabilization of necromass (in vivo pathway) or via adsorption of the products of extracellular decomposition (ex vivo pathway). Here we use a diagnostic model to quantify which stabilization pathway is prevalent using data on residue-derived carbon and nitrogen incorporation in mineral-associated organic matter. We find that the in vivo pathway is dominant in fine-textured soils with low organic matter content.
Huajie Zhu, Xiuli Xing, Mousong Wu, Weimin Ju, and Fei Jiang
Biogeosciences, 21, 3735–3760, https://doi.org/10.5194/bg-21-3735-2024, https://doi.org/10.5194/bg-21-3735-2024, 2024
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Ecosystem carbonyl sulfide (COS) fluxes were employed to optimize GPP estimation across ecosystems with the Biosphere-atmosphere Exchange Process Simulator (BEPS), which was developed for simulating the canopy COS uptake under its state-of-the-art two-leaf modeling framework. Our results showcased the efficacy of COS in improving model prediction and reducing prediction uncertainty of GPP and enhanced insights into the sensitivity, identifiability, and interactions of parameters related to COS.
Moritz Laub, Magdalena Necpalova, Marijn Van de Broek, Marc Corbeels, Samuel Mathu Ndungu, Monicah Wanjiku Mucheru-Muna, Daniel Mugendi, Rebecca Yegon, Wycliffe Waswa, Bernard Vanlauwe, and Johan Six
Biogeosciences, 21, 3691–3716, https://doi.org/10.5194/bg-21-3691-2024, https://doi.org/10.5194/bg-21-3691-2024, 2024
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We used the DayCent model to assess the potential impact of integrated soil fertility management (ISFM) on maize production, soil fertility, and greenhouse gas emission in Kenya. After adjustments, DayCent represented measured mean yields and soil carbon stock changes well and N2O emissions acceptably. Our results showed that soil fertility losses could be reduced but not completely eliminated with ISFM and that, while N2O emissions increased with ISFM, emissions per kilogram yield decreased.
Hazel Cathcart, Julian Aherne, Michael D. Moran, Verica Savic-Jovcic, Paul A. Makar, and Amanda Cole
EGUsphere, https://doi.org/10.5194/egusphere-2024-2371, https://doi.org/10.5194/egusphere-2024-2371, 2024
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Deposition from sulfur and nitrogen pollution can harm ecosystems, and recovery from this type of pollution can take decades or longer. To identify risk to Canadian soils, we created maps showing sensitivity to sulfur and nitrogen pollution. Results show that some ecosystems are at risk from acid and nutrient nitrogen deposition; 10 % of protected areas are receiving acid deposition beyond their damage threshold and 70 % may be receiving nitrogen deposition that could cause biodiversity loss.
Erik Schwarz, Samia Ghersheen, Salim Belyazid, and Stefano Manzoni
Biogeosciences, 21, 3441–3461, https://doi.org/10.5194/bg-21-3441-2024, https://doi.org/10.5194/bg-21-3441-2024, 2024
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The occurrence of unstable equilibrium points (EPs) could impede the applicability of microbial-explicit soil organic carbon models. For archetypal model versions we identify when instability can occur and describe mathematical conditions to avoid such unstable EPs. We discuss implications for further model development, highlighting the important role of considering basic ecological principles to ensure biologically meaningful models.
Sian Kou-Giesbrecht, Vivek K. Arora, Christian Seiler, and Libo Wang
Biogeosciences, 21, 3339–3371, https://doi.org/10.5194/bg-21-3339-2024, https://doi.org/10.5194/bg-21-3339-2024, 2024
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Terrestrial biosphere models can either prescribe the geographical distribution of biomes or simulate them dynamically, capturing climate-change-driven biome shifts. We isolate and examine the differences between these different land cover implementations. We find that the simulated terrestrial carbon sink at the end of the 21st century is twice as large in simulations with dynamic land cover than in simulations with prescribed land cover due to important range shifts in the Arctic and Amazon.
Elizabeth S. Duan, Luciana Chavez Rodriguez, Nicole Hemming-Schroeder, Baptiste Wijas, Habacuc Flores-Moreno, Alexander W. Cheesman, Lucas A. Cernusak, Michael J. Liddell, Paul Eggleton, Amy E. Zanne, and Steven D. Allison
Biogeosciences, 21, 3321–3338, https://doi.org/10.5194/bg-21-3321-2024, https://doi.org/10.5194/bg-21-3321-2024, 2024
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Understanding the link between climate and carbon fluxes is crucial for predicting how climate change will impact carbon sinks. We estimated carbon dioxide (CO2) fluxes from deadwood in tropical Australia using wood moisture content and temperature. Our model predicted that the majority of deadwood carbon is released as CO2, except when termite activity is detected. Future models should also incorporate wood traits, like species and chemical composition, to better predict fluxes.
Daniel Nadal-Sala, Rüdiger Grote, David Kraus, Uri Hochberg, Tamir Klein, Yael Wagner, Fedor Tatarinov, Dan Yakir, and Nadine K. Ruehr
Biogeosciences, 21, 2973–2994, https://doi.org/10.5194/bg-21-2973-2024, https://doi.org/10.5194/bg-21-2973-2024, 2024
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A hydraulic model approach is presented that can be added to any physiologically based ecosystem model. Simulated plant water potential triggers stomatal closure, photosynthesis decline, root–soil resistance increases, and sapwood and foliage senescence. The model has been evaluated at an extremely dry site stocked with Aleppo pine and was able to represent gas exchange, soil water content, and plant water potential. The model also responded realistically regarding leaf senescence.
Patrick Neri, Lianhong Gu, and Yang Song
Biogeosciences, 21, 2731–2758, https://doi.org/10.5194/bg-21-2731-2024, https://doi.org/10.5194/bg-21-2731-2024, 2024
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A first-of-its-kind global-scale model of temperature resilience and tolerance of photosystem II maximum quantum yield informs how plants maintain their efficiency of converting light energy to chemical energy for photosynthesis under temperature changes. Our finding explores this variation across plant functional types and habitat climatology, highlighting diverse temperature response strategies and a method to improve global-scale photosynthesis modeling under climate change.
Liyuan He, Jorge L. Mazza Rodrigues, Melanie A. Mayes, Chun-Ta Lai, David A. Lipson, and Xiaofeng Xu
Biogeosciences, 21, 2313–2333, https://doi.org/10.5194/bg-21-2313-2024, https://doi.org/10.5194/bg-21-2313-2024, 2024
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Soil microbes are the driving engine for biogeochemical cycles of carbon and nutrients. This study applies a microbial-explicit model to quantify bacteria and fungal biomass carbon in soils from 1901 to 2016. Results showed substantial increases in bacterial and fungal biomass carbon over the past century, jointly influenced by vegetation growth and soil temperature and moisture. This pioneering century-long estimation offers crucial insights into soil microbial roles in global carbon cycling.
Tao Chen, Félicien Meunier, Marc Peaucelle, Guoping Tang, Ye Yuan, and Hans Verbeeck
Biogeosciences, 21, 2253–2272, https://doi.org/10.5194/bg-21-2253-2024, https://doi.org/10.5194/bg-21-2253-2024, 2024
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Chinese subtropical forest ecosystems are an extremely important component of global forest ecosystems and hence crucial for the global carbon cycle and regional climate change. However, there is still great uncertainty in the relationship between subtropical forest carbon sequestration and its drivers. We provide first quantitative estimates of the individual and interactive effects of different drivers on the gross primary productivity changes of various subtropical forest types in China.
Pritha Pande, Sam Bland, Nathan Booth, Jo Cook, Zhaozhong Feng, and Lisa Emberson
EGUsphere, https://doi.org/10.5194/egusphere-2024-694, https://doi.org/10.5194/egusphere-2024-694, 2024
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The DO3SE-crop model extends the DO3SE to simulate ozone's impact on crops with modules for ozone uptake, damage, and crop growth from JULES-Crop. It's versatile, suits China's varied agriculture, and improves yield predictions under ozone stress. It is essential for policy, water management, and climate response, it integrates into Earth System Models for a comprehensive understanding of agriculture's interaction with global systems.
Ke Liu, Yujie Wang, Troy S. Magney, and Christian Frankenberg
Biogeosciences, 21, 1501–1516, https://doi.org/10.5194/bg-21-1501-2024, https://doi.org/10.5194/bg-21-1501-2024, 2024
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Stomata are pores on leaves that regulate gas exchange between plants and the atmosphere. Existing land models unrealistically assume stomata can jump between steady states when the environment changes. We implemented dynamic modeling to predict gradual stomatal responses at different scales. Results suggested that considering this effect on plant behavior patterns in diurnal cycles was important. Our framework also simplified simulations and can contribute to further efficiency improvements.
Melanie A. Thurner, Silvia Caldararu, Jan Engel, Anja Rammig, and Sönke Zaehle
Biogeosciences, 21, 1391–1410, https://doi.org/10.5194/bg-21-1391-2024, https://doi.org/10.5194/bg-21-1391-2024, 2024
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Due to their crucial role in terrestrial ecosystems, we implemented mycorrhizal fungi into the QUINCY terrestrial biosphere model. Fungi interact with mineral and organic soil to support plant N uptake and, thus, plant growth. Our results suggest that the effect of mycorrhizal interactions on simulated ecosystem dynamics is minor under constant environmental conditions but necessary to reproduce and understand observed patterns under changing conditions, such as rising atmospheric CO2.
Jinyun Tang and William J. Riley
Biogeosciences, 21, 1061–1070, https://doi.org/10.5194/bg-21-1061-2024, https://doi.org/10.5194/bg-21-1061-2024, 2024
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A chemical kinetics theory is proposed to explain the non-monotonic relationship between temperature and biochemical rates. It incorporates the observed thermally reversible enzyme denaturation that is ensured by the ceaseless thermal motion of molecules and ions in an enzyme solution and three well-established theories: (1) law of mass action, (2) diffusion-limited chemical reaction theory, and (3) transition state theory.
Nina Raoult, Louis-Axel Edouard-Rambaut, Nicolas Vuichard, Vladislav Bastrikov, Anne Sofie Lansø, Bertrand Guenet, and Philippe Peylin
Biogeosciences, 21, 1017–1036, https://doi.org/10.5194/bg-21-1017-2024, https://doi.org/10.5194/bg-21-1017-2024, 2024
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Observations are used to reduce uncertainty in land surface models (LSMs) by optimising poorly constraining parameters. However, optimising against current conditions does not necessarily ensure that the parameters treated as invariant will be robust in a changing climate. Manipulation experiments offer us a unique chance to optimise our models under different (here atmospheric CO2) conditions. By using these data in optimisations, we gain confidence in the future projections of LSMs.
Kelsey T. Foster, Wu Sun, Yoichi P. Shiga, Jiafu Mao, and Anna M. Michalak
Biogeosciences, 21, 869–891, https://doi.org/10.5194/bg-21-869-2024, https://doi.org/10.5194/bg-21-869-2024, 2024
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Assessing agreement between bottom-up and top-down methods across spatial scales can provide insights into the relationship between ensemble spread (difference across models) and model accuracy (difference between model estimates and reality). We find that ensemble spread is unlikely to be a good indicator of actual uncertainty in the North American carbon balance. However, models that are consistent with atmospheric constraints show stronger agreement between top-down and bottom-up estimates.
Victoria R. Dutch, Nick Rutter, Leanne Wake, Oliver Sonnentag, Gabriel Hould Gosselin, Melody Sandells, Chris Derksen, Branden Walker, Gesa Meyer, Richard Essery, Richard Kelly, Phillip Marsh, Julia Boike, and Matteo Detto
Biogeosciences, 21, 825–841, https://doi.org/10.5194/bg-21-825-2024, https://doi.org/10.5194/bg-21-825-2024, 2024
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We undertake a sensitivity study of three different parameters on the simulation of net ecosystem exchange (NEE) during the snow-covered non-growing season at an Arctic tundra site. Simulations are compared to eddy covariance measurements, with near-zero NEE simulated despite observed CO2 release. We then consider how to parameterise the model better in Arctic tundra environments on both sub-seasonal timescales and cumulatively throughout the snow-covered non-growing season.
Bertrand Guenet, Jérémie Orliac, Lauric Cécillon, Olivier Torres, Laura Sereni, Philip A. Martin, Pierre Barré, and Laurent Bopp
Biogeosciences, 21, 657–669, https://doi.org/10.5194/bg-21-657-2024, https://doi.org/10.5194/bg-21-657-2024, 2024
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Heterotrophic respiration fluxes are a major flux between surfaces and the atmosphere, but Earth system models do not yet represent them correctly. Here we benchmarked Earth system models against observation-based products, and we identified the important mechanisms that need to be improved in the next-generation Earth system models.
Shuyue Li, Bonnie Waring, Jennifer Powers, and David Medvigy
Biogeosciences, 21, 455–471, https://doi.org/10.5194/bg-21-455-2024, https://doi.org/10.5194/bg-21-455-2024, 2024
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We used an ecosystem model to simulate primary production of a tropical forest subjected to 3 years of nutrient fertilization. Simulations parameterized such that relative allocation to fine roots increased with increasing soil phosphorus had leaf, wood, and fine root production consistent with observations. However, these simulations seemed to over-allocate to fine roots on multidecadal timescales, affecting aboveground biomass. Additional observations across timescales would benefit models.
Stephen Björn Wirth, Arne Poyda, Friedhelm Taube, Britta Tietjen, Christoph Müller, Kirsten Thonicke, Anja Linstädter, Kai Behn, Sibyll Schaphoff, Werner von Bloh, and Susanne Rolinski
Biogeosciences, 21, 381–410, https://doi.org/10.5194/bg-21-381-2024, https://doi.org/10.5194/bg-21-381-2024, 2024
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In dynamic global vegetation models (DGVMs), the role of functional diversity in forage supply and soil organic carbon storage of grasslands is not explicitly taken into account. We introduced functional diversity into the Lund Potsdam Jena managed Land (LPJmL) DGVM using CSR theory. The new model reproduced well-known trade-offs between plant traits and can be used to quantify the role of functional diversity in climate change mitigation using different functional diversity scenarios.
Joe R. McNorton and Francesca Di Giuseppe
Biogeosciences, 21, 279–300, https://doi.org/10.5194/bg-21-279-2024, https://doi.org/10.5194/bg-21-279-2024, 2024
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Wildfires have wide-ranging consequences for local communities, air quality and ecosystems. Vegetation amount and moisture state are key components to forecast wildfires. We developed a combined model and satellite framework to characterise vegetation, including the type of fuel, whether it is alive or dead, and its moisture content. The daily data is at high resolution globally (~9 km). Our characteristics correlate with active fire data and can inform fire danger and spread modelling efforts.
Brooke A. Eastman, William R. Wieder, Melannie D. Hartman, Edward R. Brzostek, and William T. Peterjohn
Biogeosciences, 21, 201–221, https://doi.org/10.5194/bg-21-201-2024, https://doi.org/10.5194/bg-21-201-2024, 2024
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We compared soil model performance to data from a long-term nitrogen addition experiment in a forested ecosystem. We found that in order for soil carbon models to accurately predict future forest carbon sequestration, two key processes must respond dynamically to nitrogen availability: (1) plant allocation of carbon to wood versus roots and (2) rates of soil organic matter decomposition. Long-term experiments can help improve our predictions of the land carbon sink and its climate impact.
Jan De Pue, Sebastian Wieneke, Ana Bastos, José Miguel Barrios, Liyang Liu, Philippe Ciais, Alirio Arboleda, Rafiq Hamdi, Maral Maleki, Fabienne Maignan, Françoise Gellens-Meulenberghs, Ivan Janssens, and Manuela Balzarolo
Biogeosciences, 20, 4795–4818, https://doi.org/10.5194/bg-20-4795-2023, https://doi.org/10.5194/bg-20-4795-2023, 2023
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The gross primary production (GPP) of the terrestrial biosphere is a key source of variability in the global carbon cycle. To estimate this flux, models can rely on remote sensing data (RS-driven), meteorological data (meteo-driven) or a combination of both (hybrid). An intercomparison of 11 models demonstrated that RS-driven models lack the sensitivity to short-term anomalies. Conversely, the simulation of soil moisture dynamics and stress response remains a challenge in meteo-driven models.
Chad A. Burton, Luigi J. Renzullo, Sami W. Rifai, and Albert I. J. M. Van Dijk
Biogeosciences, 20, 4109–4134, https://doi.org/10.5194/bg-20-4109-2023, https://doi.org/10.5194/bg-20-4109-2023, 2023
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Australia's land-based ecosystems play a critical role in controlling the variability in the global land carbon sink. However, uncertainties in the methods used for quantifying carbon fluxes limit our understanding. We develop high-resolution estimates of Australia's land carbon fluxes using machine learning methods and find that Australia is, on average, a stronger carbon sink than previously thought and that the seasonal dynamics of the fluxes differ from those described by other methods.
Yuan Yan, Anne Klosterhalfen, Fernando Moyano, Matthias Cuntz, Andrew C. Manning, and Alexander Knohl
Biogeosciences, 20, 4087–4107, https://doi.org/10.5194/bg-20-4087-2023, https://doi.org/10.5194/bg-20-4087-2023, 2023
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A better understanding of O2 fluxes, their exchange ratios with CO2 and their interrelations with environmental conditions would provide further insights into biogeochemical ecosystem processes. We, therefore, used the multilayer canopy model CANVEG to simulate and analyze the flux exchange for our forest study site for 2012–2016. Based on these simulations, we further successfully tested the application of various micrometeorological methods and the prospects of real O2 flux measurements.
Jie Zhang, Elisabeth Larsen Kolstad, Wenxin Zhang, Iris Vogeler, and Søren O. Petersen
Biogeosciences, 20, 3895–3917, https://doi.org/10.5194/bg-20-3895-2023, https://doi.org/10.5194/bg-20-3895-2023, 2023
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Manure application to agricultural land often results in large and variable N2O emissions. We propose a model with a parsimonious structure to investigate N transformations around such N2O hotspots. The model allows for new detailed insights into the interactions between transport and microbial activities regarding N2O emissions in heterogeneous soil environments. It highlights the importance of solute diffusion to N2O emissions from such hotspots which are often ignored by process-based models.
Jukka Alm, Antti Wall, Jukka-Pekka Myllykangas, Paavo Ojanen, Juha Heikkinen, Helena M. Henttonen, Raija Laiho, Kari Minkkinen, Tarja Tuomainen, and Juha Mikola
Biogeosciences, 20, 3827–3855, https://doi.org/10.5194/bg-20-3827-2023, https://doi.org/10.5194/bg-20-3827-2023, 2023
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In Finland peatlands cover one-third of land area. For half of those, with 4.3 Mha being drained for forestry, Finland reports sinks and sources of greenhouse gases in forest lands on organic soils following its UNFCCC commitment. We describe a new method for compiling soil CO2 balance that follows changes in tree volume, tree harvests and temperature. An increasing trend of emissions from 1.4 to 7.9 Mt CO2 was calculated for drained peatland forest soils in Finland for 1990–2021.
Siqi Li, Bo Zhu, Xunhua Zheng, Pengcheng Hu, Shenghui Han, Jihui Fan, Tao Wang, Rui Wang, Kai Wang, Zhisheng Yao, Chunyan Liu, Wei Zhang, and Yong Li
Biogeosciences, 20, 3555–3572, https://doi.org/10.5194/bg-20-3555-2023, https://doi.org/10.5194/bg-20-3555-2023, 2023
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Physical soil erosion and particulate carbon, nitrogen and phosphorus loss modules were incorporated into the process-oriented hydro-biogeochemical model CNMM-DNDC to realize the accurate simulation of water-induced erosion and subsequent particulate nutrient losses at high spatiotemporal resolution.
Ivan Cornut, Nicolas Delpierre, Jean-Paul Laclau, Joannès Guillemot, Yann Nouvellon, Otavio Campoe, Jose Luiz Stape, Vitoria Fernanda Santos, and Guerric le Maire
Biogeosciences, 20, 3093–3117, https://doi.org/10.5194/bg-20-3093-2023, https://doi.org/10.5194/bg-20-3093-2023, 2023
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Potassium is an essential element for living organisms. Trees are dependent upon this element for certain functions that allow them to build their trunks using carbon dioxide. Using data from experiments in eucalypt plantations in Brazil and a simplified computer model of the plantations, we were able to investigate the effect that a lack of potassium can have on the production of wood. Understanding nutrient cycles is useful to understand the response of forests to environmental change.
Ivan Cornut, Guerric le Maire, Jean-Paul Laclau, Joannès Guillemot, Yann Nouvellon, and Nicolas Delpierre
Biogeosciences, 20, 3119–3135, https://doi.org/10.5194/bg-20-3119-2023, https://doi.org/10.5194/bg-20-3119-2023, 2023
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After simulating the effects of low levels of potassium on the canopy of trees and the uptake of carbon dioxide from the atmosphere by leaves in Part 1, here we tried to simulate the way the trees use the carbon they have acquired and the interaction with the potassium cycle in the tree. We show that the effect of low potassium on the efficiency of the trees in acquiring carbon is enough to explain why they produce less wood when they are in soils with low levels of potassium.
Xiaojuan Yang, Peter Thornton, Daniel Ricciuto, Yilong Wang, and Forrest Hoffman
Biogeosciences, 20, 2813–2836, https://doi.org/10.5194/bg-20-2813-2023, https://doi.org/10.5194/bg-20-2813-2023, 2023
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We evaluated the performance of a land surface model (ELMv1-CNP) that includes both nitrogen (N) and phosphorus (P) limitation on carbon cycle processes. We show that ELMv1-CNP produces realistic estimates of present-day carbon pools and fluxes. We show that global C sources and sinks are significantly affected by P limitation. Our study suggests that introduction of P limitation in land surface models is likely to have substantial consequences for projections of future carbon uptake.
Kevin R. Wilcox, Scott L. Collins, Alan K. Knapp, William Pockman, Zheng Shi, Melinda D. Smith, and Yiqi Luo
Biogeosciences, 20, 2707–2725, https://doi.org/10.5194/bg-20-2707-2023, https://doi.org/10.5194/bg-20-2707-2023, 2023
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The capacity for carbon storage (C capacity) is an attribute that determines how ecosystems store carbon in the future. Here, we employ novel data–model integration techniques to identify the carbon capacity of six grassland sites spanning the US Great Plains. Hot and dry sites had low C capacity due to less plant growth and high turnover of soil C, so they may be a C source in the future. Alternately, cooler and wetter ecosystems had high C capacity, so these systems may be a future C sink.
Ara Cho, Linda M. J. Kooijmans, Kukka-Maaria Kohonen, Richard Wehr, and Maarten C. Krol
Biogeosciences, 20, 2573–2594, https://doi.org/10.5194/bg-20-2573-2023, https://doi.org/10.5194/bg-20-2573-2023, 2023
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Carbonyl sulfide (COS) is a useful constraint for estimating photosynthesis. To simulate COS leaf flux better in the SiB4 model, we propose a novel temperature function for enzyme carbonic anhydrase (CA) activity and optimize conductances using observations. The optimal activity of CA occurs below 40 °C, and Ball–Woodrow–Berry parameters are slightly changed. These reduce/increase uptakes in the tropics/higher latitudes and contribute to resolving discrepancies in the COS global budget.
Yunyao Ma, Bettina Weber, Alexandra Kratz, José Raggio, Claudia Colesie, Maik Veste, Maaike Y. Bader, and Philipp Porada
Biogeosciences, 20, 2553–2572, https://doi.org/10.5194/bg-20-2553-2023, https://doi.org/10.5194/bg-20-2553-2023, 2023
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We found that the modelled annual carbon balance of biocrusts is strongly affected by both the environment (mostly air temperature and CO2 concentration) and physiology, such as temperature response of respiration. However, the relative impacts of these drivers vary across regions with different climates. Uncertainty in driving factors may lead to unrealistic carbon balance estimates, particularly in temperate climates, and may be explained by seasonal variation of physiology due to acclimation.
Alexander J. Norton, A. Anthony Bloom, Nicholas C. Parazoo, Paul A. Levine, Shuang Ma, Renato K. Braghiere, and T. Luke Smallman
Biogeosciences, 20, 2455–2484, https://doi.org/10.5194/bg-20-2455-2023, https://doi.org/10.5194/bg-20-2455-2023, 2023
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This study explores how the representation of leaf phenology affects our ability to predict changes to the carbon balance of land ecosystems. We calibrate a new leaf phenology model against a diverse range of observations at six forest sites, showing that it improves the predictive capability of the processes underlying the ecosystem carbon balance. We then show how changes in temperature and rainfall affect the ecosystem carbon balance with this new model.
Libo Wang, Vivek K. Arora, Paul Bartlett, Ed Chan, and Salvatore R. Curasi
Biogeosciences, 20, 2265–2282, https://doi.org/10.5194/bg-20-2265-2023, https://doi.org/10.5194/bg-20-2265-2023, 2023
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Plant functional types (PFTs) are groups of plant species used to represent vegetation distribution in land surface models. There are large uncertainties associated with existing methods for mapping land cover datasets to PFTs. This study demonstrates how fine-resolution tree cover fraction and land cover datasets can be used to inform the PFT mapping process and reduce the uncertainties. The proposed largely objective method makes it easier to implement new land cover products in models.
Jennifer A. Holm, David M. Medvigy, Benjamin Smith, Jeffrey S. Dukes, Claus Beier, Mikhail Mishurov, Xiangtao Xu, Jeremy W. Lichstein, Craig D. Allen, Klaus S. Larsen, Yiqi Luo, Cari Ficken, William T. Pockman, William R. L. Anderegg, and Anja Rammig
Biogeosciences, 20, 2117–2142, https://doi.org/10.5194/bg-20-2117-2023, https://doi.org/10.5194/bg-20-2117-2023, 2023
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Unprecedented climate extremes (UCEs) are expected to have dramatic impacts on ecosystems. We present a road map of how dynamic vegetation models can explore extreme drought and climate change and assess ecological processes to measure and reduce model uncertainties. The models predict strong nonlinear responses to UCEs. Due to different model representations, the models differ in magnitude and trajectory of forest loss. Therefore, we explore specific plant responses that reflect knowledge gaps.
Veronika Kronnäs, Klas Lucander, Giuliana Zanchi, Nadja Stadlinger, Salim Belyazid, and Cecilia Akselsson
Biogeosciences, 20, 1879–1899, https://doi.org/10.5194/bg-20-1879-2023, https://doi.org/10.5194/bg-20-1879-2023, 2023
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In a future climate, extreme droughts might become more common. Climate change and droughts can have negative effects on soil weathering and plant health.
In this study, climate change effects on weathering were studied on sites in Sweden using the model ForSAFE, a climate change scenario and an extreme drought scenario. The modelling shows that weathering is higher during summer and increases with global warming but that weathering during drought summers can become as low as winter weathering.
Agustín Sarquis and Carlos A. Sierra
Biogeosciences, 20, 1759–1771, https://doi.org/10.5194/bg-20-1759-2023, https://doi.org/10.5194/bg-20-1759-2023, 2023
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Although plant litter is chemically and physically heterogenous and undergoes multiple transformations, models that represent litter dynamics often ignore this complexity. We used a multi-model inference framework to include information content in litter decomposition datasets and studied the time it takes for litter to decompose as measured by the transit time. In arid lands, the median transit time of litter is about 3 years and has a negative correlation with mean annual temperature.
Qi Guan, Jing Tang, Lian Feng, Stefan Olin, and Guy Schurgers
Biogeosciences, 20, 1635–1648, https://doi.org/10.5194/bg-20-1635-2023, https://doi.org/10.5194/bg-20-1635-2023, 2023
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Understanding terrestrial sources of nitrogen is vital to examine lake eutrophication changes. Combining process-based ecosystem modeling and satellite observations, we found that land-leached nitrogen in the Yangtze Plain significantly increased from 1979 to 2018, and terrestrial nutrient sources were positively correlated with eutrophication trends observed in most lakes, demonstrating the necessity of sustainable nitrogen management to control eutrophication.
Vivek K. Arora, Christian Seiler, Libo Wang, and Sian Kou-Giesbrecht
Biogeosciences, 20, 1313–1355, https://doi.org/10.5194/bg-20-1313-2023, https://doi.org/10.5194/bg-20-1313-2023, 2023
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The behaviour of natural systems is now very often represented through mathematical models. These models represent our understanding of how nature works. Of course, nature does not care about our understanding. Since our understanding is not perfect, evaluating models is challenging, and there are uncertainties. This paper illustrates this uncertainty for land models and argues that evaluating models in light of the uncertainty in various components provides useful information.
Benjamin S. Felzer
Biogeosciences, 20, 573–587, https://doi.org/10.5194/bg-20-573-2023, https://doi.org/10.5194/bg-20-573-2023, 2023
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The future of the terrestrial carbon sink depends upon the legacy of past land use, which determines the stand age of the forest and nutrient levels in the soil, both of which affect vegetation growth. This study uses a modeling approach to determine the effects of land-use legacy in the conterminous US from 1750 to 2099. Not accounting for land legacy results in a low carbon sink and high biomass, while water variables are not as highly affected.
Cited articles
Allison, E. H., Perry, A. L., Badjeck, M.-C., Neil Adger, W., Brown, K.,
Conway, D., Halls, A. S., Pilling, G. M., Reynolds, J. D., Andrew, N. L.,
and Dulvy, N. K.: Vulnerability of national economies to the impacts of
climate change on fisheries, Fish Fish., 10, 173–196,
https://doi.org/10.1111/j.1467-2979.2008.00310.x, 2009.
Allison, S. D., Wallenstein, M. D., and Bradford, M. A.: Soil-carbon
response to warming dependent on microbial physiology, Nat. Geosci., 3,
336–340, https://doi.org/10.1038/ngeo846, 2010.
Balser, T. C., Kinzig, A. P., and Firestone, M. K.: Linking soil microbial
communities and ecosystem functioning, The functional consequences of
biodiversity: Empirical progress and theoretical extensions, Biogeochemistry, 73, 265–293, 2002.
Billings, W. D., Peterson, K. M., Shaver, G. R., and Trent, A. W.: Root Growth,
Respiration, and Carbon Dioxide Evolution in an Arctic Tundra Soil, Arctic
Alpine Res., 9, 129–137, https://doi.org/10.1080/00040851.1977.12003908, 1977.
Blagodatskaya, E. and Kuzyakov, Y.: Active microorganisms in soil: Critical
review of estimation criteria and approaches, Soil Biol. Biochem.,
67, 192–211, https://doi.org/10.1016/j.soilbio.2013.08.024, 2013.
Blagodatskaya, E., Khomyakov, N., Myachina, O., Bogomolova, I., Blagodatsky,
S., and Kuzyakov, Y.: Microbial interactions affect sources of priming
induced by cellulose, Soil Biol. Biochem., 74, 39–49,
https://doi.org/10.1016/j.soilbio.2014.02.017, 2014.
Blagodatsky, S., Grote, R., Kiese, R., Werner, C., and Butterbach-Bahl, K.:
Modelling of microbial carbon and nitrogen turnover in soil with special
emphasis on N-trace gases emission, Plant Soil, 346, 297–330,
https://doi.org/10.1007/s11104-011-0821-z, 2011.
Blagodatsky, S. A., Heinemeyer, O., and Richter, J.: Estimating the active
and total soil microbial biomass by kinetic respiration analysis, Biol.
Fertil. Soils, 32, 73–81, 2000.
Bond-Lamberty, B. and Thomson, A.: Temperature-associated increases in the
global soil respiration record, Nature, 464, 579–582, https://doi.org/10.1038/nature08930,
2010.
Bond-Lamberty, B., Bailey, V. L., Chen, M., Gough, C. M., and Vargas, R.:
Globally rising soil heterotrophic respiration over recent decades, Nature,
560, 80–83, https://doi.org/10.1038/s41586-018-0358-x, 2018.
Bouskill, N. J., Tang, J., Riley, W. J., and Brodie, E. L.: Trait-based
representation of biological nitrification: model development, testing, and
predicted community composition, Front. Microb., 3, 364,
https://doi.org/10.3389/fmicb.2012.00364, 2012.
Callaghan, T., Björn, L. O., Chernov, Y., Chapin, T., Christensen, T.
R., Huntley, B., Ims, R., Jolly, D., Jonasson, S., Matveyeva, N., Panikov,
N., Oechel, W., and Shaver, G.: Arctic tundra and polar desert ecosystems,
Arctic climate impact assessment, Cambridge University Press, New York, 243–352, 2005.
Classen, A. T., Sundqvist, M. K., Henning, J. A., Newman, G. S., Moore, J.
A. M., Cregger, M. A., Moorhead, L. C., and Patterson, C. M.: Direct and
indirect effects of climate change on soil microbial and soil
microbial-plant interactions: What lies ahead?, Ecosphere, 6, 130,
https://doi.org/10.1890/es15-00217.1, 2015.
Conant, R. T., Ryan, M. G., Ågren, G. I., Birge, H. E., Davidson, E. A.,
Eliasson, P. E., Evans, S. E., Frey, S. D., Giardina, C. P., Hopkins, F. M.,
Hyvönen, R., Kirschbaum, M. U. F., Lavallee, J. M., Leifeld, J., Parton,
W. J., Megan Steinweg, J., Wallenstein, M. D., Martin Wetterstedt, J.
Å., and Bradford, M. A.: Temperature and soil organic matter
decomposition rates – synthesis of current knowledge and a way forward,
Glob. Change Biol., 17, 3392–3404, https://doi.org/10.1111/j.1365-2486.2011.02496.x,
2011.
Coursolle, C., Margolis, H. A., Barr, A. G., Black, T. A., Amiro, B. D.,
McCaughey, J. H., Flanagan, L. B., Lafleur, P. M., Roulet, N. T., Bourque,
C. P. A., Arain, M. A., Wofsy, S. C., Dunn, A., Morgenstern, K., Orchansky,
A. L., Bernier, P. Y., Chen, J. M., Kidston, J., Saigusa, N., and Hedstrom,
N.: Late-summer carbon fluxes from Canadian forests and peatlands along an
east–west continental transect, Can. J. Forest Res., 36,
783–800, https://doi.org/10.1139/x05-270, 2006.
Davidson, E. A., Trumbore, S. E., and Amundson, R.: Biogeochemistry: soil
warming and organic carbon content, Nature, 408, 789–790, https://doi.org/10.1038/35048672, 2000.
Davidson, E. A. and Janssens, I. A.: Temperature sensitivity of soil carbon
decomposition and feedbacks to climate change, Nature, 440, 165–173,
https://doi.org/10.1038/nature04514, 2006.
Davidson, E. A., Janssens, I. A., and Luo, Y.: On the variability of
respiration in terrestrial ecosystems: moving beyond Q10, Glob. Change Biol., 12, 154–164, https://doi.org/10.1111/j.1365-2486.2005.01065.x, 2006.
Davidson, E. A., Samanta, S., Caramori, S. S., and Savage, K.: The Dual
Arrhenius and Michaelis-Menten kinetics model for decomposition of soil
organic matter at hourly to seasonal time scales, Glob. Change Biol., 18,
371–384, https://doi.org/10.1111/j.1365-2486.2011.02546.x, 2012.
Duan, Q., Sorooshian, S., and Gupta, V. K.: Optimal use of the SCE-UA global
optimization method for calibrating watershed models, J. Hydrol.,
158, 265–284, 1994.
Evans, S. E. and Wallenstein, M. D.: Soil microbial community response to
drying and rewetting stress: does historical precipitation regime matter?,
Biogeochemistry, 109, 101–116, https://doi.org/10.1007/s10533-011-9638-3, 2011.
Fierer, N., Morse, J. L., Berthrong, S. T., Bernhardt, E. S., and Jackson,
R. B.: Environmental controls on the landscape – scale biogeography of
stream bacterial communities, Ecology, 88, 2162–2173, 2007.
Frey, S. D., Lee, J., Melillo, J. M., and Six, J.: The temperature response
of soil microbial efficiency and its feedback to climate, Nat. Clim. Change, 3, 395–398, https://doi.org/10.1038/nclimate1796, 2013.
German, D. P., Marcelo, K. R. B., Stone, M. M., and Allison, S. D.: The
Michaelis-Menten kinetics of soil extracellular enzymes in response to
temperature: a cross-latitudinal study, Glob. Change Biol., 18,
1468–1479, https://doi.org/10.1111/j.1365-2486.2011.02615.x, 2012.
Gilmanov, T. G., Tieszen, L. L., Wylie, B. K., Flanagan, L. B., Frank, A.
B., Haferkamp, M. R., Meyers, T. P., and Morgan, J. A.: Integration of
CO2flux and remotely-sensed data for primary production and ecosystem
respiration analyses in the Northern Great Plains: potential for
quantitative spatial extrapolation, Glob. Ecol. Biogeogr., 14,
271–292, https://doi.org/10.1111/j.1466-822X.2005.00151.x, 2005.
Gough, C. M., Hardiman, B. S., Nave, L. E., Bohrer, G., Maurer, K. D.,
Vogel, C. S., Nadelhoffer, K. J., and Curtis, P. S.: Sustained carbon uptake
and storage following moderate disturbancein a Great Lakes forest,
Ecol. Appl., 23, 1202–1215, 2013.
Goulden, M. L., Winston, G. C., McMillan, A. M. S., Litvak, M. E., Read, E.
L., Rocha, A. V., and Rob Elliot, J.: An eddy covariance mesonet to measure
the effect of forest age on land-atmosphere exchange, Glob. Change Biol.,
12, 2146–2162, https://doi.org/10.1111/j.1365-2486.2006.01251.x, 2006.
Graham, E. B., Wieder, W. R., Leff, J. W., Weintraub, S. R., Townsend, A.
R., Cleveland, C. C., Philippot, L., and Nemergut, D. R.: Do we need to
understand microbial communities to predict ecosystem function? A comparison
of statistical models of nitrogen cycling processes, Soil Biol. Biochem., 68, 279–282, https://doi.org/10.1016/j.soilbio.2013.08.023, 2014.
Graham, E. B., Knelman, J. E., Schindlbacher, A., Siciliano, S., Breulmann,
M., Yannarell, A., Beman, J. M., Abell, G., Philippot, L., Prosser, J.,
Foulquier, A., Yuste, J. C., Glanville, H. C., Jones, D. L., Angel, R.,
Salminen, J., Newton, R. J., Burgmann, H., Ingram, L. J., Hamer, U.,
Siljanen, H. M., Peltoniemi, K., Potthast, K., Baneras, L., Hartmann, M.,
Banerjee, S., Yu, R. Q., Nogaro, G., Richter, A., Koranda, M., Castle, S.
C., Goberna, M., Song, B., Chatterjee, A., Nunes, O. C., Lopes, A. R., Cao,
Y., Kaisermann, A., Hallin, S., Strickland, M. S., Garcia-Pausas, J., Barba,
J., Kang, H., Isobe, K., Papaspyrou, S., Pastorelli, R., Lagomarsino, A.,
Lindstrom, E. S., Basiliko, N., and Nemergut, D. R.: Microbes as Engines of
Ecosystem Function: When Does Community Structure Enhance Predictions of
Ecosystem Processes?, Front. Microb., 7, 214,
https://doi.org/10.3389/fmicb.2016.00214, 2016.
Griffis, T. J., Lee, X., Baker, J. M., Billmark, K., Schultz, N., Erickson,
M., Zhang, X., Fassbinder, J., Xiao, W., and Hu, N.: Oxygen isotope
composition of evapotranspiration and its relation to C4photosynthetic
discrimination, J. Geophys. Res., 116, https://doi.org/10.1029/2010jg001514,
2011.
Hagerty, S. B., van Groenigen, K. J., Allison, S. D., Hungate, B. A.,
Schwartz, E., Koch, G. W., Kolka, R. K., and Dijkstra, P.: Accelerated
microbial turnover but constant growth efficiency with warming in soil,
Nat. Clim. Change, 4, 903–906, https://doi.org/10.1038/nclimate2361, 2014.
Hanson, P. J., Edwards, N. T., Garten, C. T., and Andrews, J. A.: Separating root and soil
microbial contributions to soil respiration: A review of methods and
observations, Biogeochemistry, 48, 115–146, 2000.
Hansen, J., Sato, M., Ruedy, R., Lo, K., Lea, D. W., and Medina-Elizade, M.:
Global temperature change, P. Natl. Acad. Sci. USA, 103, 14288–14293, https://doi.org/10.1073/pnas.0606291103,
2006.
Harder, W. and Dijkhuizen, L.: Physiological responses to nutrient
limitation, Annu. Rev. Microb., 37, 1–23, 1983.
Harris, I., Jones, P. D., Osborn, T. J., and Lister, D. H.: Updated
high-resolution grids of monthly climatic observations – the CRU TS3.10
Dataset, Int. J. Climatol., 34, 623–642,
https://doi.org/10.1002/joc.3711, 2014.
He, Y., Yang, J., Zhuang, Q., Harden, J. W., McGuire, A. D., Liu, Y., Wang,
G., and Gu, L.: Incorporating microbial dormancy dynamics into soil
decomposition models to improve quantification of soil carbon dynamics of
northern temperate forests, J. Geophys. Res.-Biogeo.,
120, 2596–2611, https://doi.org/10.1002/2015jg003130, 2015.
Hiller, R. V., McFadden, J. P., and Kljun, N.: Interpreting CO2 Fluxes Over
a Suburban Lawn: The Influence of Traffic Emissions, Bound.-Lay. Meteorol., 138, 215–230, https://doi.org/10.1007/s10546-010-9558-0, 2010.
Houghton, R. A.: Balancing the Global Carbon Budget, Annu. Rev. Earth
Pl. Sc., 35, 313–347, https://doi.org/10.1146/annurev.earth.35.031306.140057,
2007.
Hugelius, G., Strauss, J., Zubrzycki, S., Harden, J. W., Schuur, E. A. G., Ping, C.-L., Schirrmeister, L., Grosse, G., Michaelson, G. J., Koven, C. D., O'Donnell, J. A., Elberling, B., Mishra, U., Camill, P., Yu, Z., Palmtag, J., and Kuhry, P.: Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps, Biogeosciences, 11, 6573–6593, https://doi.org/10.5194/bg-11-6573-2014, 2014.
Jenkins, J. P., Richardson, A. D., Braswell, B. H., Ollinger, S. V.,
Hollinger, D. Y., and Smith, M. L.: Refining light-use efficiency
calculations for a deciduous forest canopy using simultaneous tower-based
carbon flux and radiometric measurements, Agr. Forest
Meteorol., 143, 64–79, https://doi.org/10.1016/j.agrformet.2006.11.008, 2007.
Kaiser, C., Franklin, O., Dieckmann, U., and Richter, A.: Microbial
community dynamics alleviate stoichiometric constraints during litter decay,
Ecol. Lett., 17, 680–690, https://doi.org/10.1111/ele.12269, 2014.
Knorr, W., Prentice, I. C., House, J. I., and Holland, E. A.: Long-term
sensitivity of soil carbon turnover to warming, Nature, 433, 298–301, https://doi.org/10.1038/nature03226, 2005.
Lawrence, C. R., Neff, J. C., and Schimel, J. P.: Does adding microbial
mechanisms of decomposition improve soil organic matter models?, A comparison
of four models using data from a pulsed rewetting experiment, Soil Biol. Biochem., 41, 1923–1934, https://doi.org/10.1016/j.soilbio.2009.06.016, 2009.
Lennon, J. T. and Jones, S. E.: Microbial seed banks: the ecological and
evolutionary implications of dormancy, Nature reviews, Microbiology, 9,
119–130, 10.1038/nrmicro2504, 2011.
Lloyd, A. H., Rupp, T. S., Fastie, C. L., and Starfield, A. M.: Patterns and
dynamics of treeline advance on the Seward Peninsula, Alaska, J. Geophys. Res., 108, 8161, https://doi.org/10.1029/2001jd000852, 2002.
Manzoni, S., Taylor, P., Richter, A., Porporato, A., and Agren, G. I.:
Environmental and stoichiometric controls on microbial carbon-use efficiency
in soils, New Phytol., 196, 79–91, https://doi.org/10.1111/j.1469-8137.2012.04225.x,
2012.
McEwing, K. R., Fisher, J. P., and Zona, D.: Environmental and vegetation
controls on the spatial variability of CH4 emission from wet-sedge and
tussock tundra ecosystems in the Arctic, Plant Soil, 388, 37–52,
https://doi.org/10.1007/s11104-014-2377-1, 2015.
McGuire, A. D., Melillo, J. M., Joyce, L. A., Kicklighter, D. W., Grace, A.
L., III, B. M., and Vorosmarty, C. J.: Interactions between carbon and
nitrogen dynamics in estimating net primary productivity for potential
vegetation in North America, Global Biogeochem. Cy., 6, 101–124, 1992.
McGuire, A. D., Melillo, J. M., Kicklighter, D. W., and Joyce, L. A.:
Equilibrium responses of soil carbon to climate change: Empirical and
process-based estimates, J. Biogeogr., 22, 785–796, 1995.
McGuire, A. D. and Hobbie, J. E.: Global climate change and the equilibrium
responses of carbon storage in arctic and subarctic regions, in: Modeling the
Arctic system: A workshop report on the state of modeling in the Arctic
System Science program, 53–54, 1997.
McGuire, A. D., Anderson, L. G., Christensen, T. R., Dallimore, S., Guo, L.,
Hayes, D. J., Heimann, M., Lorenson, T. D., Macdonald, R. W., and Roulet,
N.: Sensitivity of the carbon cycle in the Arctic to climate change,
Ecol. Monogr., 79, 523–555, 2009.
McGuire, K. L. and Treseder, K. K.: Microbial communities and their
relevance for ecosystem models: Decomposition as a case study, Soil Biol. Biochem., 42, 529–535, https://doi.org/10.1016/j.soilbio.2009.11.016, 2010.
Melillo, J. M., McGuire, A. D., Kicklighter, D. W., Moore III, B., Vorosmarty,
C. J., and Schloss, A. L.: Global climate change and terrestrial net primary
production, Nature, 363, 234–240,
https://doi.org/10.1038/363234a0, 1993.
Merbold, L., Kutsch, W. L., Corradi, C., Kolle, O., Rebmann, C., Stoy, P.
C., Zimov, S. A., and Schulze, E. D.: Artificial drainage and associated
carbon fluxes (CO2∕CH4) in a tundra ecosystem, Glob. Change Biol., 15,
2599–2614, https://doi.org/10.1111/j.1365-2486.2009.01962.x, 2009.
Moorhead, D. L. and Sinsabaugh, R. L.: A theoretical model of litter decay
and microbial interaction, Ecol. Monogr., 76, 151–174, 2006.
Oechel, W. C., Laskowski, C. A., Burba, G., Gioli, B., and Kalhori, A. A.
M.: Annual patterns and budget of CO2flux in an Arctic tussock tundra
ecosystem, J. Geophys. Res.-Biogeo., 119, 323–339,
https://doi.org/10.1002/2013jg002431, 2014.
Parton, W. J., Scurlock, J. M. O., Ojima, D. S., Gilmanov, T. G., Scholes,
R. J., Schimel, D. S., Kirchner, T., Menaut, J. C., Seastedt, T., Moya, E.
G., Kamnalrut, A., and Kinyamario, J. I.: Observations and modeling of
biomass and soil organic matter dynamics for the grassland biome worldwide,
Global Biogeochem. Cy., 7, 785–809, 1993.
Raich, J. W., Rastetter, E. B., Melillo, J. M., Kicklighter, D. W.,
Steudler, P. A., Peterson, B. J., Grace, A. L., Moore, B., and Vorosmary,
C. J.: Potential net primary productivity in South America: application of a
global model, Ecol. Appl., 1, 399–429,
https://doi.org/10.2307/1941899, 1991.
Richardson, A. D., Jenkins, J. P., Braswell, B. H., Hollinger, D. Y.,
Ollinger, S. V., and Smith, M. L.: Use of digital webcam images to track
spring green-up in a deciduous broadleaf forest, Oecologia, 152, 323–334,
https://doi.org/10.1007/s00442-006-0657-z, 2007.
Running, S. W. and Coughlan, J. C.: A general model of forest ecosystem
processes for regional applications I. Hydrologic balance, canopy gas
exchange and primary production processes, Ecol. Modell., 42,
125–154, 1988.
Salazar, A., Sulman, B. N., and Dukes, J. S.: Microbial dormancy promotes microbial biomass and respiration across pulses of drying-wetting stress, Soil Biol. Biochem., 116, 237–244, https://doi.org/10.1016/j.soilbio.2017.10.017, 2018.
Schimel, D. S.: Terrestrial ecosystems and the carbon cycle, Glob. Change Biol., 1, 77–91, 1995.
Schimel, D. S., House, J. I., Hibbard, K. A., Bousquet, P., Ciais, P.,
Peylin, P., Braswell, B. H., Apps, M. J., Baker, D., Bondeau, A., Canadell,
J., Churkina, G., Cramer, W., Denning, A. S., Field, C. B., Friedlingstein,
P., Goodale, C., Heimann, M., Houghton, R. A., Melillo, J. M., III, B. M.,
Murdiyarso, D., Noble, I., Pacala, S. W., Prentice, I. C., Raupach, M. R.,
Rayner, P. J., Scholes, R. J., Steffen, W. L., and Wirth, C.: Recent
patterns and mechanisms of carbon exchange by terrestrial ecosystems,
Nature, 414, 169–172, https://doi.org/10.1038/3510250, 2001.
Schimel, J.: Microbes and global carbon, Nat. Clim. Change, 3, 867–868,
https://doi.org/10.1038/nclimate2015, 2013.
Schimel, J. P. and Weintraub, M. N.: The implications of exoenzyme activity
on microbial carbon and nitrogen limitation in soil: a theoretical model,
Soil Biol. Biochem., 35, 549–563, https://doi.org/10.1016/s0038-0717(03)00015-4,
2003.
Schimel, J. P. and Schaeffer, S. M.: Microbial control over carbon cycling
in soil, Front. Microb., 3, 348, https://doi.org/10.3389/fmicb.2012.00348, 2012.
Schmidt, M. W., Torn, M. S., Abiven, S., Dittmar, T., Guggenberger, G.,
Janssens, I. A., Kleber, M., Kogel-Knabner, I., Lehmann, J., Manning, D. A.,
Nannipieri, P., Rasse, D. P., Weiner, S., and Trumbore, S. E.: Persistence
of soil organic matter as an ecosystem property, Nature, 478, 49–56,
https://doi.org/10.1038/nature10386, 2011.
Stolpovsky, K., Martinez-Lavanchy, P., Heipieper, H. J., Van Cappellen, P.,
and Thullner, M.: Incorporating dormancy in dynamic microbial community
models, Ecol. Modell., 222, 3092–3102,
https://doi.org/10.1016/j.ecolmodel.2011.07.006, 2011.
Stow, D. A., Hope, A., McGuire, D., Verbyla, D., Gamon, J., Huemmrich, F.,
Houston, S., Racine, C., Sturm, M., Tape, K., Hinzman, L., Yoshikawa, K.,
Tweedie, C., Noyle, B., Silapaswan, C., Douglas, D., Griffith, B., Jia, G.,
Epstein, H., Walker, D., Daeschner, S., Petersen, A., Zhou, L., and Myneni,
R.: Remote sensing of vegetation and land-cover change in Arctic Tundra
Ecosystems, Remote Sens. Environ., 89, 281–308,
https://doi.org/10.1016/j.rse.2003.10.018, 2004.
Strickland, M. S., Lauber, C., Fierer, N., and Bradford, M. A.: Testing the
functional signi?canceof microbial community composition, Ecology, 90,
441–451, 2009.
Tang, J. and Zhuang, Q.: Equifinality in parameterization of process-based
biogeochemistry models: A significant uncertainty source to the estimation
of regional carbon dynamics, J. Geophys. Res., 113, G04010,
https://doi.org/10.1029/2008JG000757, 2008.
Tang, J. and Zhuang, Q.: A global sensitivity analysis and Bayesian
inference framework for improving the parameter estimation and prediction of
a process-based Terrestrial Ecosystem Model, J. Geophys. Res., 114, D15303,
https://doi.org/10.1029/2009JD011724, 2009.
Tang, J. and Riley, W. J.: Weaker soil carbon–climate feedbacks resulting
from microbial and abiotic interactions, Nat. Clim. Change, 5, 56–60,
https://doi.org/10.1038/nclimate2438, 2014.
Tape, K. E. N., Sturm, M., and Racine, C.: The evidence for shrub expansion
in Northern Alaska and the Pan-Arctic, Glob. Change Biol., 12, 686–702,
https://doi.org/10.1111/j.1365-2486.2006.01128.x, 2006.
Tarnocai, C., Canadell, J. G., Schuur, E. A. G., Kuhry, P., Mazhitova, G.,
and Zimov, S.: Soil organic carbon pools in the northern circumpolar
permafrost region, Global Biogeochem. Cy., 23, GB2023,
https://doi.org/10.1029/2008gb003327, 2009.
Thullner, M., Van Cappellen, P., and Regnier, P.: Modeling the impact of
microbial activity on redox dynamics in porous media, Geochim.
Cosmochim. Ac., 69, 5005–5019, https://doi.org/10.1016/j.gca.2005.04.026, 2005.
Todd-Brown, K. E. O., Hopkins, F. M., Kivlin, S. N., Talbot, J. M., and
Allison, S. D.: A framework for representing microbial decomposition in
coupled climate models, Biogeochemistry, 109, 19–33,
https://doi.org/10.1007/s10533-011-9635-6, 2011.
Todd-Brown, K. E. O., Randerson, J. T., Post, W. M., Hoffman, F. M., Tarnocai, C., Schuur, E. A. G., and Allison, S. D.: Causes of variation in soil carbon simulations from CMIP5 Earth system models and comparison with observations, Biogeosciences, 10, 1717–1736, https://doi.org/10.5194/bg-10-1717-2013, 2013.
Treseder, K. K., Balser, T. C., Bradford, M. A., Brodie, E. L., Dubinsky, E.
A., Eviner, V. T., Hofmockel, K. S., Lennon, J. T., Levine, U. Y.,
MacGregor, B. J., Pett-Ridge, J., and Waldrop, M. P.: Integrating microbial
ecology into ecosystem models: challenges and priorities, Biogeochemistry,
109, 7–18, https://doi.org/10.1007/s10533-011-9636-5, 2011.
Wang, G., Mayes, M. A., Gu, L., and Schadt, C. W.: Representation of
Dormant and Active Microbial Dynamics for Ecosystem Modeling, Public Library
of Science, 9, e89252, https://doi.org/10.1371/journal.pone.0089252.g001, 2014.
Wang, G., Jagadamma, S., Mayes, M. A., Schadt, C. W., Steinweg, J. M., Gu,
L., and Post, W. M.: Microbial dormancy improves development and
experimental validation of ecosystem model, ISME J., 9, 226–237,
https://doi.org/10.1038/ismej.2014.120, 2015.
Wang, W., Feng, J., and Oikawa, T.: Contribution of Root and Microbial Respiration
to Soil CO2 Efflux and Their Environmental Controls in a Humid Temperate
Grassland of Japan, Pedosphere, 19, 31–39, 2009.
Werf, H. V. D. and Verstraete, W.: Estimation of active soil microbial
biomass by mathematical analysis of respiration curves: relation to
conventional estimation of total biomass, Soil Biol. Biochem., 19,
267–271, 1987.
White, A., Cannell, M. G. R., and Friend, A. D.: The high-latitude
terrestrial carbon sink: a model analysis Glob. Change Biol., 6, 227–245,
2000.
Wieder, W. R., Allison, S. D., Davidson, E. A., Georgiou, K., Hararuk, O., He, Y., Hopkins, F., Luo, Y., Smith, M. J., Sulman, B., Todd-Brown, K., Wang, Y. P., Xia, J., and Xu, X.: Explicitly representing soil microbial processes in Earth system models, Global Biogeochem. Cy., 29, 1782–1800, https://doi.org/10.1002/2015GB005188, 2015.
Wieder, W. R., Bonan, G. B., and Allison, S. D.: Global soil carbon
projections are improved by modelling microbial processes, Nat. Clim. Change, 3, 909–912, https://doi.org/10.1038/nclimate1951, 2013.
Xu, X., Schimel, J. P., Thornton, P. E., Song, X., Yuan, F., and Goswami,
S.: Substrate and environmental controls on microbial assimilation of soil
organic carbon: a framework for Earth system models, Ecol. Lett., 17,
547–555, https://doi.org/10.1111/ele.12254, 2014.
Zha, J. and Zhuang, Q.: Microbial decomposition processes and vulnerable arctic soil organic carbon in the 21st century, Biogeosciences, 15, 5621–5634, https://doi.org/10.5194/bg-15-5621-2018, 2018.
Zhou, L., Tucker, C. J., Kaufmann, R. K., Slayback, D., Shabanov, N. V., and
Myneni, R. B.: Variations in northern vegetation activity inferred from
satellite data of vegetation index during 1981 to 1999, J. Geophys. Res.-Atmos., 106, 20069–20083, https://doi.org/10.1029/2000jd000115,
2001.
Zhuang, Q., Romanovsky, V. E., and McGuire, A. D.: Incorporation of a
permafrost model into a large-scale ecosystem model: Evaluation of temporal
and spatial scaling issues in simulating soil thermal dynamics, J. Geophys. Res.:-Atmos., 106, 33649–33670, https://doi.org/10.1029/2001jd900151,
2001.
Zhuang, Q., McGuire, A. D., O'Neill, K. P., Harden, J. W., Romanovsky, V.
E., and Yarie, J.: Modeling soil thermal and carbon dynamics of a fire
chronosequence in interior Alaska, J. Geophys. Res., 108, FFR 3-1-FFR-3-26, https://doi.org/10.1029/2001jd001244, 2002.
Zhuang, Q., He, J., Lu, Y., Ji, L., Xiao, J., and Luo, T.: Carbon dynamics
of terrestrial ecosystems on the Tibetan Plateau during the 20th century: An
analysis with a process-based biogeochemical model, Glob. Ecol. Biogeogr., 19, 649–662, https://doi.org/10.1111/j.1466-8238.2010.00559.x, 2010.
Zhuang, Q., Zhu, X., He, Y., Prigent, C., Melillo, J. M., David McGuire, A.,
Prinn, R. G., and Kicklighter, D. W.: Influence of changes in wetland
inundation extent on net fluxes of carbon dioxide and methane in northern
high latitudes from 1993 to 2004, Environ. Res. Lett., 10,
095009, https://doi.org/10.1088/1748-9326/10/9/095009, 2015.
Zhuang, Q., McGuire, A. D., Melillo, J. M., Clein, J. S., Dargaville, R. J.,
Kicklighter, D. W., Myneni, R. B., Dong, J., Romanovsky, V. E., Harden, J.,
and Hobbie, J. E.: Carbon cycling in extratropical terrestrial ecosystems of
the Northern Hemisphere during the 20th century: a modeling analysis of the
influences of soil thermal dynamics, Tellus B, 55, 751–776, https://doi.org/10.3402/tellusb.v55i3.16368, 2016.
Short summary
This study incorporated microbial dormancy into a detailed microbe-based biogeochemistry model to examine the fate of Arctic carbon budgets under changing climate conditions. Compared with the model without microbial dormancy, the new model estimated a much higher carbon accumulation in the region during the last and current century. This study highlights the importance of the representation of microbial dormancy in earth system models to adequately quantify the carbon dynamics in the Arctic.
This study incorporated microbial dormancy into a detailed microbe-based biogeochemistry model...
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