GSTDTAP

浏览/检索结果: 共15条,第1-10条 帮助

已选(0)清除 条数/页:   排序方式:
欧美研究称气候模型低估了植被碳循环过程 快报文章
气候变化快报,2024年第13期
作者:  裴惠娟
Microsoft Word(14Kb)  |  收藏  |  浏览/下载:545/0  |  提交时间:2024/07/05
Terrestrial Vegetation  Carbon Uptake  Carbon Turnover  Radiocarbon  
研究揭示气候变化对北极动物运动的影响 快报文章
气候变化快报,2020年第22期
作者:  裴惠娟
Microsoft Word(16Kb)  |  收藏  |  浏览/下载:428/0  |  提交时间:2020/11/20
Global Warming  Spatial Emergent Constraint  Soil Carbon Turnover  
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:61/0  |  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.


  
Evidence for large carbon sink and long residence time in semiarid forests based on 15 year flux and inventory records 期刊论文
GLOBAL CHANGE BIOLOGY, 2019
作者:  Qubaja, Rafat;  Grunzweig, Jose M.;  Rotenberg, Eyal;  Yakir, Dan
收藏  |  浏览/下载:27/0  |  提交时间:2020/02/17
carbon sequestration  carbon sink  carbon turnover time  ecosystem productivity  semiarid  soil carbon  
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:22/0  |  提交时间:2019/11/27
microbial activity  microbial carbon use efficiency  microbial necromass  microbial turnover  plant diversity  soil organic carbon  
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:39/0  |  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:24/0  |  提交时间:2019/04/09
carbon use efficiency (CUE)  data-model integration  Harvard forest  microbial biomass turnover (rB)  soil warming  temperature sensitivity  
Fine root longevity and below- and aboveground litter production in a boreal Betula pendula forest 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2019, 431: 17-25
作者:  Ding, Yiyang;  Leppalammi-Kujansuu, Jaana;  Helmisaari, Helja-Sisko
收藏  |  浏览/下载:30/0  |  提交时间:2019/04/09
Carbon  Minirhizotrons  Survival analysis  Fine root turnover  Silver birch  Understory  
Disentangling the effects of tree species and microclimate on heterotrophic and autotrophic soil respiration in a Mediterranean ecotone forest 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 430: 533-544
作者:  Jose Fernandez-Alonso, Maria;  Diaz-Pines, Eugenio;  Ortiz, Carlos;  Rubio, Agustin
收藏  |  浏览/下载:24/0  |  提交时间:2019/04/09
Soil CO2 efflux  Soil temperature and moisture  Root-trenching  Carbon turnover rate  Forest succession  Global change  Ecosystem ecology  
Carbon cycle confidence and uncertainty: Exploring variation among soil biogeochemical models 期刊论文
GLOBAL CHANGE BIOLOGY, 2018, 24 (4) : 1563-1579
作者:  Wieder, William R.;  Hartman, Melannie D.;  Sulman, Benjamin N.;  Wang, Ying-Ping;  Koven, Charles D.;  Bonan, Gordon B.
收藏  |  浏览/下载:18/0  |  提交时间:2019/04/09
biogeochemistry  carbon cycle  earth system models  global change  microbial models  soil organic matter  structural uncertainty  turnover time