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Millennial-scale hydroclimate control of tropical soil carbon storage 期刊论文
NATURE, 2020, 581 (7806) : 63-+
作者:  Lam, Tommy Tsan-Yuk;  Jia, Na;  Zhang, Ya-Wei;  Shum, Marcus Ho-Hin;  Jiang, Jia-Fu;  Zhu, Hua-Chen;  Tong, Yi-Gang;  Shi, Yong-Xia;  Ni, Xue-Bing;  Liao, Yun-Shi;  Li, Wen-Juan;  Jiang, Bao-Gui;  Wei, Wei;  Yuan, Ting-Ting;  Zheng, Kui;  Cui, Xiao-Ming;  Li, Jie;  Pei, Guang-Qian
收藏  |  浏览/下载:25/0  |  提交时间:2020/05/13

Over the past 18,000 years, the residence time and amount of soil carbon stored in the Ganges-Brahmaputra basin have been controlled by the intensity of Indian Summer Monsoon rainfall, with greater carbon destabilization during wetter, warmer conditions.


The storage of organic carbon in the terrestrial biosphere directly affects atmospheric concentrations of carbon dioxide over a wide range of timescales. Within the terrestrial biosphere, the magnitude of carbon storage can vary in response to environmental perturbations such as changing temperature or hydroclimate(1), potentially generating feedback on the atmospheric inventory of carbon dioxide. Although temperature controls the storage of soil organic carbon at mid and high latitudes(2,3), hydroclimate may be the dominant driver of soil carbon persistence in the tropics(4,5)  however, the sensitivity of tropical soil carbon turnover to large-scale hydroclimate variability remains poorly understood. Here we show that changes in Indian Summer Monsoon rainfall have controlled the residence time of soil carbon in the Ganges-Brahmaputra basin over the past 18,000 years. Comparison of radiocarbon ages of bulk organic carbon and terrestrial higher-plant biomarkers with co-located palaeohydrological records(6) reveals a negative relationship between monsoon rainfall and soil organic carbon stocks on a millennial timescale. Across the deglaciation period, a depletion of basin-wide soil carbon stocks was triggered by increasing rainfall and associated enhanced soil respiration rates. Our results suggest that future hydroclimate changes in tropical regions are likely to accelerate soil carbon destabilization, further increasing atmospheric carbon dioxide concentrations.


  
How Important is Denitrification in Riparian Zones? Combining End-Member Mixing and Isotope Modeling to Quantify Nitrate Removal from Riparian Groundwater 期刊论文
WATER RESOURCES RESEARCH, 2020, 56 (1)
作者:  Lutz, Stefanie R.;  Trauth, Nico;  Musolff, Andreas;  Van Breukelen, Boris M.;  Knoeller, Kay;  Fleckenstein, Jan H.
收藏  |  浏览/下载:7/0  |  提交时间:2020/07/02
Microbial responses to warming enhance soil carbon loss following translocation across a tropical forest elevation gradient 期刊论文
ECOLOGY LETTERS, 2019, 22 (11) : 1889-1899
作者:  Nottingham, Andrew T.;  Whitaker, Jeanette;  Ostle, Nick J.;  Bardgett, Richard D.;  McNamara, Niall P.;  Fierer, Noah;  Salinas, Norma;  Ccahuana, Adan J. Q.;  Turner, Benjamin L.;  Meir, Patrick
收藏  |  浏览/下载:15/0  |  提交时间:2019/11/27
Carbon-use-efficiency  climate feedback  climate warming  lowland tropical forest  montane tropical forest  Q(10)  soil carbon cycle  translocation  
Increased microbial growth, biomass, and turnover drive soil organic carbon accumulation at higher plant diversity 期刊论文
GLOBAL CHANGE BIOLOGY, 2019
作者:  Prommer, Judith;  Walker, Tom W. N.;  Wanek, Wolfgang;  Braun, Judith;  Zezula, David;  Hu, Yuntao;  Hofhansl, Florian;  Richter, Andreas
收藏  |  浏览/下载:14/0  |  提交时间:2019/11/27
microbial activity  microbial carbon use efficiency  microbial necromass  microbial turnover  plant diversity  soil organic carbon  
The global soil community and its influence on biogeochemistry 期刊论文
SCIENCE, 2019, 365 (6455) : 772-+
作者:  Crowther, T. W.;  van den Hoogen, J.;  Wan, J.;  Mayes, M. A.;  Keiser, A. D.;  Mo, L.;  Averill, C.;  Maynard, D. S.
收藏  |  浏览/下载:34/0  |  提交时间:2019/11/27
Long-term nitrogen addition modifies microbial composition and functions for slow carbon cycling and increased sequestration in tropical forest soil 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (10) : 3267-3281
作者:  Tian, Jing;  Dungait, Jennifer A. J.;  Lu, Xiankai;  Yang, Yunfeng;  Hartley, Iain P.;  Zhang, Wei;  Mo, Jiangming;  Yu, Guirui;  Zhou, Jizhong;  Kuzyakov, Yakov
收藏  |  浏览/下载:9/0  |  提交时间:2019/11/27
biogeochemical cycling  C and N turnover  global climate change  microbial functional community  N deposition  tropical forest  
Deep soil flipping increases carbon stocks of New Zealand grasslands 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (7) : 2296-2309
作者:  Schiedung, Marcus;  Tregurtha, Craig S.;  Beare, Michael H.;  Thomas, Steve M.;  Don, Axel
收藏  |  浏览/下载:7/0  |  提交时间:2019/11/27
carbon burial  carbon sequestration  carbon stocks  chronosequence  grassland  re-sampling  soil organic carbon  subsoil  
Soil organic carbon stability in forests: Distinct effects of tree species identity and traits 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (4) : 1529-1546
作者:  Angst, Gerrit;  Mueller, Kevin E.;  Eissenstat, David M.;  Trumbore, Susan;  Freeman, Katherine H.;  Hobbie, Sarah E.;  Chorover, Jon;  Oleksyn, Jacek;  Reich, Peter B.;  Mueller, Carsten W.
收藏  |  浏览/下载:5/0  |  提交时间:2019/04/09
C-14  N-15  common garden  heterotrophic respiration  mineral associated SOM  physical fractionation  stoichiometry  
Underestimated ecosystem carbon turnover time and sequestration under the steady state assumption: A perspective from long-term data assimilation 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (3) : 938-953
作者:  Ge, Rong;  He, Honglin;  Ren, Xiaoli;  Zhang, Li;  Yu, Guirui;  Smallman, T. Luke;  Zhou, Tao;  Yu, Shi-Yong;  Luo, Yiqi;  Xie, Zongqiang;  Wang, Silong;  Wang, Huimin;  Zhou, Guoyi;  Zhang, Qibin;  Wang, Anzhi;  Fan, Zexin;  Zhang, Yiping;  Shen, Weijun;  Yin, Huajun;  Lin, Luxiang
收藏  |  浏览/下载:13/0  |  提交时间:2019/04/09
carbon sequestration  climate sensitivity  non-steady state  steady state  turnover time  
Reduced carbon use efficiency and increased microbial turnover with soil warming 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (3) : 900-910
作者:  Li, Jianwei;  Wang, Gangsheng;  Mayes, Melanie A.;  Allison, Steven D.;  Frey, Serita D.;  Shi, Zheng;  Hu, Xiao-Ming;  Luo, Yiqi;  Melillo, Jerry M.
收藏  |  浏览/下载:9/0  |  提交时间:2019/04/09
carbon use efficiency (CUE)  data-model integration  Harvard forest  microbial biomass turnover (rB)  soil warming  temperature sensitivity