气候变化领域集成服务门户(CCPortal): Tradeoff of CO2 and CH4 emissions from global peatlands under water-table drawdown

CCPortal

DOI	10.1038/s41558-021-01059-w
	Tradeoff of CO2 and CH4 emissions from global peatlands under water-table drawdown
	Huang Y.; Ciais P.; Luo Y.; Zhu D.; Wang Y.; Qiu C.; Goll D.S.; Guenet B.; Makowski D.; De Graaf I.; Leifeld J.; Kwon M.J.; Hu J.; Qu L.
发表日期	2021
ISSN	1758-678X
起始页码	618
结束页码	622
卷号	11 期号:7
英文摘要	Water-table drawdown across peatlands increases carbon dioxide (CO2) and reduces methane (CH4) emissions. The net climatic effect remains unclear. Based on global observations from 130 sites, we found a positive (warming) net climate effect of water-table drawdown. Using a machine-learning-based upscaling approach, we predict that peatland water-table drawdown driven by climate drying and human activities will increase CO2 emissions by 1.13 (95% interval: 0.88–1.50) Gt yr−1 and reduce CH4 by 0.26 (0.14–0.52) GtCO2-eq yr−1, resulting in a net increase of greenhouse gas of 0.86 (0.36–1.36) GtCO2-eq yr−1 by the end of the twenty-first century under the RCP8.5 climate scenario. This drops to 0.73 (0.2–1.2) GtCO2-eq yr−1 under RCP2.6. Our results point to an urgent need to preserve pristine and rehabilitate drained peatlands to decelerate the positive feedback among water-table drawdown, increased greenhouse gas emissions and climate warming. © 2021, Crown.
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/237301
作者单位	Laboratoire des Sciences du Climat et de l’Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France; CSIRO Oceans and Atmosphere, Aspendale, VIC, Australia; Center for Ecosystem Science and Society, Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, United States; Laboratoire de Géologie, UMR 8538, Ecole Normale Supérieure, PSL Research University, CNRS, IPSL, Paris, France; INRAE, AgroParisTech, University Paris-Saclay, UMR MIA 518, Paris, France; Chair of Environmental Hydrological Systems, Faculty of Environmental and Natural Resources, University of Freiburg, Freiburg, Germany; Water Systems and Global Change Group, Wageningen University & Research, Wageningen, Netherlands; Agroscope, Climate and Agriculture Group, Zurich, Switzerland; Geosystems Research Institute, Mississippi State University, Mississippi State, MS, United States; Wetland Biogeochemistry Laboratory, Soil and Water Science Department, University of Florida, Gainesville, FL, ...
推荐引用方式 GB/T 7714	Huang Y.,Ciais P.,Luo Y.,et al. Tradeoff of CO2 and CH4 emissions from global peatlands under water-table drawdown[J],2021,11(7).
APA	Huang Y..,Ciais P..,Luo Y..,Zhu D..,Wang Y..,...&Qu L..(2021).Tradeoff of CO2 and CH4 emissions from global peatlands under water-table drawdown.Nature Climate Change,11(7).
MLA	Huang Y.,et al."Tradeoff of CO2 and CH4 emissions from global peatlands under water-table drawdown".Nature Climate Change 11.7(2021).