Articles | Volume 15, issue 16
Research article 27 Aug 2018
Research article | 27 Aug 2018
Conversion of tropical forests to smallholder rubber and oil palm plantations impacts nutrient leaching losses and nutrient retention efficiency in highly weathered soils
Syahrul Kurniawan et al.
No articles found.
Balázs Grosz, Reinhard Well, Rene Dechow, Jan Reent Köster, M. Ibrahim Khalil, Simone Merl, Andreas Rode, Bianca Ziehmer, Amanda Matson, and Hongxing He
Revised manuscript accepted for BGShort summary
To assure quality predictions biogeochemical models must be current. We use data measured using novel incubation methods, to test the denitrification sub-modules of three models. We aim to identify limitations in the denitrification modelling to inform next steps for development. Several areas are identified, most urgently improved denitrification control parameters and further testing with high-temporal-resolution datasets. Addressing these would significantly improve denitrification modelling.
Najeeb Al-Amin Iddris, Marife D. Corre, Martin Yemefack, Oliver van Straaten, and Edzo Veldkamp
Biogeosciences, 17, 5377–5397,Short summary
We quantified the changes in stem and soil nitrous oxide (N2O) fluxes with forest conversion to cacao agroforestry in the Congo Basin, Cameroon. All forest and cacao trees consistently emitted N2O, contributing 8–38 % of the total (soil and stem) emissions. Forest conversion to extensively managed (>–20 years old) cacao agroforestry had no effect on stem and soil N2O fluxes. Our results highlight the importance of including tree-mediated fluxes in the ecosystem-level N2O budget.
Greta Formaglio, Edzo Veldkamp, Xiaohong Duan, Aiyen Tjoa, and Marife D. Corre
Biogeosciences, 17, 5243–5262,Short summary
The intensive management of large-scale oil palm plantations may result in high nutrient leaching losses which reduce soil fertility and potentially pollute water bodies. The reduction in management intensity with lower fertilization rates and with mechanical weeding instead of the use of herbicide results in lower nutrient leaching losses while maintaining high yield. Lower leaching results from lower nutrient inputs from fertilizer and from higher retention by enhanced cover vegetation.
Ashehad A. Ali, Yuanchao Fan, Marife D. Corre, Martyna M. Kotowska, Evelyn Hassler, Fernando E. Moyano, Christian Stiegler, Alexander Röll, Ana Meijide, Andre Ringeler, Christoph Leuschner, Tania June, Suria Tarigan, Holger Kreft, Dirk Hölscher, Chonggang Xu, Charles D. Koven, Rosie Fisher, Edzo Veldkamp, and Alexander Knohl
Geosci. Model Dev. Discuss.,
Revised manuscript not acceptedShort summary
We used carbon-use and water-use related datasets of small-holder rubber plantations from Jambi province, Indonesia to develop and calibrate a rubber plant functional type for the Community Land Model (CLM-rubber). Increased sensitivity of stomata to soil water stress and enhanced respiration costs enabled the model to capture the magnitude of transpiration and leaf area index. Including temporal variations in leaf life span enabled the model to better capture the seasonality of leaf litterfall.
Marleen de Blécourt, Marife D. Corre, Ekananda Paudel, Rhett D. Harrison, Rainer Brumme, and Edzo Veldkamp
SOIL, 3, 123–137,Short summary
We examined the spatial variability in SOC in a 10 000 ha landscape in SW China. The spatial variability in SOC was largest at the plot scale (1 ha) and the associations between SOC and land use, soil properties, vegetation, and topographical attributes varied across plot to landscape scales. Our results show that sampling designs must consider the controlling factors at the scale of interest in order to elucidate their effects on SOC against the variability within and between plots.
Amanda L. Matson, Marife D. Corre, Kerstin Langs, and Edzo Veldkamp
Biogeosciences, 14, 3509–3524,Short summary
We present 1 to 2 years of greenhouse gas flux field measurements (CO2, CH4, N2O and NO) in the tropical forest soils of Panama. Fluxes were measured in five sites along the orthogonal gradients of precipitation and fertility. Using these natural gradients, our results highlight the importance of both short-term (climate) and long-term (soil and site characteristics) factors in predicting soil trace gas fluxes and provide information for modeling trace gases under future climate scenarios.
Evelyn Hassler, Marife D. Corre, Syahrul Kurniawan, and Edzo Veldkamp
Biogeosciences, 14, 2781–2798,Short summary
We measured the soil N-oxide gases, N2O and NO in four land uses of Jambi, Sumatra, Indonesia. We aimed to assess the impact of forest conversion to rubber and oil palm plantations on these N-oxide gases. We found that there were no differences in soil N-oxide fluxes among land uses. However, soil N-oxide fluxes increased following N-fertilizer application in oil palm plantations. We estimated an annual soil N-oxide emission of 361 t N yr−1 from N fertilization for the Jambi province.
H. C. Hombegowda, O. van Straaten, M. Köhler, and D. Hölscher
SOIL, 2, 13–23,Short summary
Incorporating trees into agriculture systems provides numerous environmental services. In this chronosequence study conducted across S. India, we found that agroforestry systems (AFSs), specifically home gardens, coffee, coconut and mango, can cause soil organic carbon (SOC) to rebound to forest levels. We established 224 plots in 56 clusters and compared the SOC between natural forests, agriculture and AFSs. SOC sequestered depending on AFS type, environmental conditions and tree diversity.
E. Hassler, M. D. Corre, A. Tjoa, M. Damris, S. R. Utami, and E. Veldkamp
Biogeosciences, 12, 5831–5852,Short summary
We found that in Indonesia, oil palm displayed reduced soil CO2 fluxes compared to forest and rubber plantations; this was mainly caused by reduced litter input. Furthermore, we measured reduced soil CH4 uptake in oil palm and rubber plantations compared to forest; this was due to a decrease in soil N availability in the converted land uses. Our study shows for the first time that differences in soil fertility control soil-atmosphere exchange of CO2 and CH4 in a tropical landscape.
S. Vicca, M. Bahn, M. Estiarte, E. E. van Loon, R. Vargas, G. Alberti, P. Ambus, M. A. Arain, C. Beier, L. P. Bentley, W. Borken, N. Buchmann, S. L. Collins, G. de Dato, J. S. Dukes, C. Escolar, P. Fay, G. Guidolotti, P. J. Hanson, A. Kahmen, G. Kröel-Dulay, T. Ladreiter-Knauss, K. S. Larsen, E. Lellei-Kovacs, E. Lebrija-Trejos, F. T. Maestre, S. Marhan, M. Marshall, P. Meir, Y. Miao, J. Muhr, P. A. Niklaus, R. Ogaya, J. Peñuelas, C. Poll, L. E. Rustad, K. Savage, A. Schindlbacher, I. K. Schmidt, A. R. Smith, E. D. Sotta, V. Suseela, A. Tietema, N. van Gestel, O. van Straaten, S. Wan, U. Weber, and I. A. Janssens
Biogeosciences, 11, 2991–3013,
E. Veldkamp, B. Koehler, and M. D. Corre
Biogeosciences, 10, 5367–5379,
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Allen, K., Corre, M. D., Tjoa, A., and Veldkamp, E.: Soil nitrogen-cycling responses to conversion of lowland forests to oil palm and rubber plantations in Sumatra, Indonesia, PLoS ONE, 10, e0133325, https://doi.org/10.1371/journal.pone.0133325, 2015.
Anuar, A. R., Goh, K. J., Heoh, T. B., and Ahmed, O. H.: Spatial variability of soil inorganic N in a mature oil palm plantation in Sabah, Malaysia, Am. J. Appl. Sci., 5, 1239–1246, 2008.
Balasubramanian, R., Victor, T., and Begum, R.: Impact of biomass burning on rainwater acidity and composition in Singapore, J. Geophys. Res.-Biogeo., 104, 26881–26890, 1999.
Banabas, M., Turner, M. A., Scotter, D. R., and Nelson, P. N.: Losses of nitrogen fertiliser under oil palm in Papua New Guinea: 1. Water balance, and nitrogen in soil solution and runoff, Aust. J. Soil Res., 46, 332–339, https://doi.org/10.1071/SR07171, 2008.
Bragazza, L., Freeman, C., Jones, T., Rydin, H., Limpens, J., Fenner, N., Ellis, T., Gerdol, R., Hájek, M., Hájek, T., Iacumin, P., Kutnar, L., Tahvanainen, T., and Toberman, H.: Atmospheric nitrogen deposition promotes carbon loss from peat bogs, P. Natl. Acad. Sci. USA, 103, 19386–19389, https://doi.org/10.1073/pnas.0606629104, 2006.
Clough, Y., Krishna, V. V., Corre, M. D., Darras, K., Denmead, L. H., Meijide, A., Moser, S., Musshoff, O., Steinebach, S., Veldkamp, E., Allen, K., Barnes, A., Breidenbach, N., Brose, U., Buchori, D., Daniel, R., Finkeldey, R., Harahap, I., Hertel, D., Holtkamp, A. M., Hörandl, E., Irawan, B., Jaya, I. N. S., Jochum, M., Klarner, B., Knohl, A., Kotowska, M. M., Krashevska, V., Kreft, H., Kurniawan, S., Leuschner, C., Maraun, M., Melati, D. N., Opfermann, N., Pérez-Cruzado, C., Prabowo, W. E., Rembold, K., Rizali, A., Rubiana, R., Schneider, D., Tjitrosoedirdjo, S. S., Tjoa, A., Tscharntke, T., and Scheu, S.: Land-use choices follow profitability at the expense of ecological functions in Indonesian smallholder landscapes, Nat. Commun., 7, 13137, https://doi.org/10.1038/ncomms13137, 2016.
Comte, I., Colin, F., Grünberger, O., Follain, S., Whalen, J. K., and Caliman, J. P.: Landscape-scale assessment of soil response to long-term organic and mineral fertilizer application in an industrial oil palm plantation, Indonesia, Agric. Ecosyst. Environ., 169, 58–68, https://doi.org/10.1016/j.agee.2013.02.010, 2013.
Corre, M. D., Dechert, G., and Veldkamp, E.: Soil nitrogen cycling following montane forest conversion in Central Sulawesi, Indonesia, Soil Sci. Soc. Am. J., 70, 359–366, https://doi.org/10.2136/sssaj2005.0061, 2006.
Corre, M. D., Veldkamp, E., Arnold, J., and Wright, S. J.: Impact of elevated N input on soil N cycling and losses in lowland and montane forests in Panama, Ecology, 91, 1715–1729, https://doi.org/10.1890/09-0274.1, 2010.
Crawley, M. J.: The R book, John Wiley and Sons Limited, Chichester, UK, 2009.
Davidson, E. A., de Carvalho, C. J. R., Figueira, A. M., Ishida, F. Y., Ometto, J. P. H. B., Nardoto, G. B., Saba, R. T., Hayashi, S. N., Leal, E. C., Vieira, I. C. G., and Martinelli, L. A.: Recuperation of nitrogen cycling in Amazonian forests following agricultural abandonment, Nature, 447, 995–998, https://doi.org/10.1038/nature05900, 2007.
Dechert, G., Veldkamp, E., and Anas, I.: Is soil degradation unrelated to deforestation? Examining soil parameters of land use systems in upland Central Sulawesi, Indonesia, Plant Soil, 265, 197–209, https://doi.org/10.1007/s11104-005-0885-8, 2004.
Dechert, G., Veldkamp, E., and Brumme, R.: Are partial nutrient balances suitable to evaluate nutrient sustainability of landuse systems? Results from a case study in Central Sulawesi, Indonesia, Nutri. Cycl. Agroecosyst., 72, 201–212, https://doi.org/10.1007/s10705-005-1546-2, 2005.
DGEC (Directorate General of Estate Crops): Tree crop estate statistics of Indonesia 2015–2017: Palm oil and rubber, Indonesian Ministry of Agriculture, available at: http://ditjenbun.pertanian.go.id/tinymcpuk/gambar/file/statistik/2017/Kelapa-Sawit-2015-2017.pdf (last access: 31 January 2018), 2017.
Eklund, T. J., McDowell, W. H., and Pringle, C. M.: Seasonal variation of tropical precipitation chemistry: La Selva, Costa Rica, Atmos. Environ., 31, 3903–3910, https://doi.org/10.1016/S1352-2310(97)00246-X, 1997.
FAO (Food and Agricultural Organization): Global Forest Resources Assessment 2010, Rome, 2010.
FAO, IIASA, ISRIC, ISS-CAS, and JRC: Harmonized World Soil Database (version 1.2), FAO, Rome, Italy & IIASA, Laxenburg, Austria, http://www.fao.org/soils-portal/soil-survey/soil-maps-and-databases/harmonized-world-soil-database-v12/en/ (last access: 9 November 2017), 2012.
Goh, K. J., Härdter, R., and Fairhurst, T.: Fertilizing for maximum return, in: Oil Palm: Management for Large and Sustainable Yields, edited by: Fairhurst, T. and Härdter, R., PPI/PPIC and IPI, Singapore, 279–306, 2003.
Hassler, E., Corre, M. D., Tjoa, A., Damris, M., Utami, S. R., and Veldkamp, E.: Soil fertility controls soil-atmosphere carbon dioxide and methane fluxes in a tropical landscape converted from lowland forest to rubber and oil palm plantations, Biogeosciences, 12, 5831–5852, https://doi.org/10.5194/bg-12-5831-2015, 2015.
Hassler, E., Corre, M. D., Kurniawan, S., and Veldkamp, E.: Soil nitrogen oxide fluxes from lowland forests converted to smallholder rubber and oil palm plantations in Sumatra, Indonesia, Biogeosciences, 14, 2781–2798, https://doi.org/10.5194/bg-14-2781-2017, 2017.
Hedin, L. O., Vitousek, P. M., and Matson, P. A.: Nutrient losses over four million years of tropical forest development, Ecology, 84, 2231–2255, https://doi.org/10.1890/02-4066, 2003.
Hillel, D: Introduction to Soil Physics, 107–114, Academic Press, California, USA, 1982.
Hoeft, I., Keuter, A., Quiñones, C. M., Schmidt-Walter, P., Veldkamp, E., and Corre, M. D.: Nitrogen retention efficiency and nitrogen losses of a managed and phytodiverse temperate grassland, Basic Appl. Ecol., 15, 207–218, https://doi.org/10.1016/j.baae.2014.04.001, 2014.
Kaufmann, J. B., Cummings, D. L., Ward, D. E., and Babbitt, R.: Fire in the Brazilian Amazon: 1. Biomass, nutrient pools, and losses in slashed primary forests, Oecologia, 104, 397–408, https://doi.org/10.1007/BF00341336, 1995.
Klinge, R., Martins, A. A. R., Mackensen, J., and Fölster, H.: Element loss on rain forest conversion in East Amazonia: comparison of balances of stores and fluxes, Biogeochemistry, 69, 63–82, https://doi.org/10.1023/B:BIOG.0000031040.38388.9b, 2004.
Kurniawan, S.: Conversion of lowland forests to rubber and oil palm plantations changes nutrient leaching and nutrient retention efficiency in highly weathered soils of Sumatra, Indonesia, University of Goettingen, Germany, Doctoral thesis, available at: http://hdl.handle.net/11858/00-1735-0000-0028-8706-8 (last access: 25 May 2016), 2016.
Lehman, J. and Schroth, G.: Nutrient leaching, in: Trees, Crops and Soil Fertility: Concepts and Research Methods, edited by: Schroth, G., and Sinclair, F. L., CABI Publishing, Wallinford, UK, 151–166, 2002.
Luskin, M. S., Christina, E. D., Kelly, L. C., and Potts, M. D.: Modern hunting practices and wild meat trade in the oil palm plantation-dominated landscapes of Sumatra, Indonesia, Hum. Ecol., 42, 35–45, https://doi.org/10.1007/s10745-013-9606-8, 2013.
Mackensen, J., Hölscher, D., Klinge, R., and Fölster, H.: Nutrient transfer to the atmosphere by burning of debris in Eastern Amazonia, For. Ecol. Manage., 86, 121–128, https://doi.org/10.1016/S0378-1127(96)03790-5, 1996.
Margono, B. A., Turubanova, S., Zhuravleva, I., Potapov, P., Tyukavina, A., and Baccini, A.: Mapping and monitoring deforestation and forest degradation in Sumatra (Indonesia) using Landsat time series data sets from 1990 to 2010, Environ. Res. Lett., 7, 1–16, https://doi.org/10.1088/1748-9326/7/3/034010, 2012.
Mualem, Y.: New model for predicting hydraulic conductivity of unsaturated porous-media, Water Resour. Res., 12, 513–522, https://doi.org/10.1029/WR012i003p00513, 1976.
Ngoze, S., Riha, S., Lehmann, J., Verchot, L., Kinyangi, J., Mbugua, D., and Pell A.: Nutrient constraints to tropical agroecosystem productivity in long-term degrading soils, Glob. Change Biol., 14, 2810–2822, https://doi.org/10.1111/j.1365-2486.2008.01698.x, 2008.
Niu, F., Röll, A., Hardanto, A., Meijide, A., Köhler, M., Hendrayanto, and Hölscher, D.: Oil palm water use: calibration of a sap flux method and a field measurement scheme, Tree Physiol., 35, 563–573, https://doi.org/10.1093/treephys/tpv013, 2015.
Ohta, S., Effendi, S., Tanaka, N., and Miura, S.: Ultisols of lowland dipterocarp forest in East Kalimantan, Indonesia, III, Clay minerals, free oxides, and exchangeable cations, Soil Sci. Plant Nutr., 39, 1–12, https://doi.org/10.1080/00380768.1993.10416969, 1993.
Omoti, U., Ataga, D. O., and Isenmila, A. E.: Leaching losses of nutrients in oil palm plantations determined by tension lysimeters, Plant Soil, 73, 365–376, https://doi.org/10.1007/BF02184313, 1983.
Ponette-González, A. G., Curran, L. M., Pittman, A. M., Carlson, K. M., Steele, B. G., Ratnasari, D., Mujiman, and Weathers, K. C.: Biomass burning drives atmospheric nutrient redistribution within forested peatlands in Borneo, Environ. Res. Lett., 11, 085003, https://doi.org/10.1088/1748-9326/11/8/085003, 2016.
Priesack, E.: Expert-N model library documentation, Institute of Soil Ecology, National Research Center for Environment and Health, Neuherberg, Germany, 2005.
R Development Core Team: R: A language and environment for statistical computing, R Foundation for Statistical Computing, Vienna, Austria, available at: http://www.R-project.org (last access: 18 November 2016), 2013.
Rembold, K., Mangopo, H., Tjitrosoedirdjo, S. S., and Kreft, H.: Plant diversity, forest dependency, and alien plant invasions in tropical agricultural landscapes, Biodivers. Conserv., 213, 234–242, https://doi.org/10.1016/j.biocon.2017.07.020, 2017.
Rist, L., Feintrenie, L., and Levang, P.: The livelihood impacts of oil palm: smallholders in Indonesia, Biodivers. Conserv., 19, 1009–1024, https://doi.org/10.1007/s10531-010-9815-z, 2010.
Sahner, J., Budi, S. W., Barus, H., Edy, N., Meyer, M., Corre, M. D., and Polle, A.: Degradation of root community traits as indicator for transformation of tropical lowland rain forests into oil palm and rubber plantations, PLoS ONE, 10, e0138077, https://doi.org/10.1371/journal.pone.0138077, 2015.
Schlesinger, W. H. and Bernhardt, E.: Biogeochemistry – an analysis of global change, 3 Edn., Academic Press, California, USA, 2013.
Schwendenmann, L. and Veldkamp, E.: The role of dissolved organic carbon, dissolved organic nitrogen and dissolved inorganic nitrogen in a tropical wet forest ecosystem, Ecosystems, 8, 339–351, https://doi.org/10.1007/s10021-003-0088-1, 2005.
Silver, W. L., Neff, J., McGroddy, M., Veldkamp, E., Keller, M., and Cosme, R.: Effects of soil texture on belowground carbon and nutrient storage in a lowland Amazonian forest ecosystem, Ecosystems, 3, 193–209, https://doi.org/10.1007/s100210000019, 2000.
Sotta, E. D., Corre, M. D., and Veldkamp, E.: Differing N status and N retention processes of soils under old-growth lowland forest in Eastern Amazonia, Caxiuanã, Brazil, Soil Biol. Biochem., 40, 740–750, https://doi.org/10.1016/j.soilbio.2007.10.009, 2008.
Sundarambal, P., Balasubramanian, R., Tkalich, P., and He, J.: Impact of biomass burning on ocean water quality in Southeast Asia through atmospheric deposition: field observations, Atmos. Chem. Phys., 10, 11323–11336, https://doi.org/10.5194/acp-10-11323-2010, 2010.
Tarigan, S. D., Sunarti, Wiegand, K., Dislich, C., Slamet, B., Heinonen, J., and Meyer, K.: Mitigation options for improving the ecosystem function of water flow regulation in a watershed with rapid expansion of oil palm plantations, Sustainability of Water Quality and Ecology, 8, 4–13, https://doi.org/10.1016/j.swaqe.2016.05.001, 2016.
Van Breemen, N., Mulder, J., and Driscoll, C. T.: Acidification and alkalinization of soils, Plant Soil, 75, 283–308, https://doi.org/10.1007/BF02369968, 1983.
Van Genuchten, M. T.: A closed-form equation for predicting the hydraulic conductivity of unsaturated soils, Soil Sci. Soc. Am. J., 44, 892–898, https://doi.org/10.2136/sssaj1980.03615995004400050002x, 1980.
van Straaten, O., Corre, M. D., Wolf, K., Tchienkoua, M., Cuellar, E., Matthews, R. B., and Veldkamp, E.: Conversion of lowland tropical forests to tree cash-crop plantations loses up to half of stored soil organic carbon, P. Natl. Acad. Sci. USA, 112, 9956–9960, https://doi.org/10.1073/pnas.1504628112, 2015.
Our study generates information to aid policies and improve soil management practices for minimizing the negative impacts of forest conversion to rubber and oil palm plantations while maintaining production. Compared to forests, the fertilized areas of oil palm plantations had higher leaching of N, organic C, and base cations, whereas the unfertilized rubber plantations showed lower leaching of dissolved P and organic C. These signaled a decrease in extant soil fertility and groundwater quality.
Our study generates information to aid policies and improve soil management practices for...