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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.


  
Changes in the sensitivity of tropical rainfall response to local sea surface temperature anomalies under global warming 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2019
作者:  Ying, Jun;  Huang, Ping;  Lian, Tao
收藏  |  浏览/下载:3/0  |  提交时间:2019/11/27
CMIP5  global warming  rainfall response  spatially non-uniform SST warming  
Spatial and temporal patterns of rainfall variability and its relationship with land surface phenology in central east Argentina 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2018, 38 (10) : 3963-3975
作者:  Celleri, Carla;  Zapperi, Georgina;  Gonzalez Trilla, Gabriela;  Pratolongo, Paula
收藏  |  浏览/下载:8/0  |  提交时间:2019/04/09
climatic transition  ENSO  land surface phenology metrics  NDVI  rainfall variability  vegetation response  
The asymmetric response of Yangtze river basin summer rainfall to El Nino/La Nina 期刊论文
ENVIRONMENTAL RESEARCH LETTERS, 2018, 13 (2)
作者:  Hardiman, Steven C.;  Dunstone, Nick J.;  Scaife, Adam A.;  Bett, Philip E.;  Li, Chaofan;  Lu, Bo;  Ren, Hong-Li;  Smith, Doug M.;  Stephan, Claudia C.
收藏  |  浏览/下载:7/0  |  提交时间:2019/04/09
seasonal forecasting  Yangtze basin rainfall  ENSO  asymmetric rainfall response  Indian Ocean  
Reconciling seasonal hydraulic risk and plant water use through probabilistic soil-plant dynamics 期刊论文
GLOBAL CHANGE BIOLOGY, 2017, 23 (9)
作者:  Feng, Xue;  Dawson, Todd E.;  Ackerly, David D.;  Santiago, Louis S.;  Thompson, Sally E.
收藏  |  浏览/下载:7/0  |  提交时间:2019/04/09
drought response  plant hydraulic risk  rainfall variability  soil-plant feedback  stochastic soil moisture dynamics