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History of giants in the gene: Scientists use DNA to trace the origins of giant viruses 新闻
来源平台:EurekAlert. 发布日期:2021
作者:  admin
收藏  |  浏览/下载:8/0  |  提交时间:2021/05/13
Revisiting ratios 新闻
来源平台:EurekAlert. 发布日期:2020
作者:  admin
收藏  |  浏览/下载:0/0  |  提交时间:2020/09/07
Persistence of soil organic carbon caused by functional complexity 期刊论文
NATURE GEOSCIENCE, 2020
作者:  Lehmann, Johannes;  Hansel, Colleen M.;  Kaiser, Christina;  Kleber, Markus;  Maher, Kate;  Manzoni, Stefano;  Nunan, Naoise;  Reichstein, Markus;  Schimel, Joshua P.;  Torn, Margaret S.;  Wieder, William R.;  Koegel-Knabner, Ingrid
收藏  |  浏览/下载:12/0  |  提交时间:2020/08/09
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.


  
Important role of forest disturbances in the global biomass turnover and carbon sinks 期刊论文
NATURE GEOSCIENCE, 2019, 12 (9) : 730-+
作者:  Pugh, Thomas A. M.;  Arneth, Almut;  Kautz, Markus;  Poulter, Benjamin;  Smith, Benjamin
收藏  |  浏览/下载:8/0  |  提交时间:2019/11/27
Smoke radiocarbon measurements from Indonesian fires provide evidence for burning of millennia-aged peat 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2018, 115 (49) : 12419-12424
作者:  Wiggins, Elizabeth B.;  Czimczik, Claudia I.;  Santos, Guaciara M.;  Chen, Yang;  Xu, Xiaomei;  Holden, Sandra R.;  Randerson, James T.;  Harvey, Charles F.;  Kai, Fuu Ming;  Yu, Liya E.
收藏  |  浏览/下载:23/0  |  提交时间:2019/11/27
tropical peatlands  global carbon cycle  human health  isotope  land cover change  
Primary productivity below the seafloor at deep-sea hot springs 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2018, 115 (26) : 6756-6761
作者:  McNichol, Jesse;  Stryhanyuk, Hryhoriy;  Sylva, Sean P.;  Thomas, Francois;  Musat, Niculina;  Seewald, Jeffrey S.;  Sievert, Stefan M.
收藏  |  浏览/下载:10/0  |  提交时间:2019/11/27
deep-sea hydrothermal  vents  chemosynthesis  Campylobacteria  ecophysiology  NanoSIMS  
Thallium isotopes reveal protracted anoxia during the Toarcian (Early Jurassic) associated with volcanism, carbon burial, and mass extinction 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2018, 115 (26) : 6596-6601
作者:  Them, Theodore R., II;  Gill, Benjamin C.;  Caruthers, Andrew H.;  Gerhardt, Angela M.;  Grocke, Darren R.;  Lyons, Timothy W.;  Marroquin, Selva M.;  Nielsen, Sune G.;  Alexandre, Joao P. Trabucho;  Owens, Jeremy D.
收藏  |  浏览/下载:8/0  |  提交时间:2019/11/27
Toarcian Oceanic Anoxic Event  Early Jurassic  thallium isotopes  carbon isotope excursion  large igneous province  
Variability in organic carbon reactivity across lake residence time and trophic gradients 期刊论文
NATURE GEOSCIENCE, 2017, 10 (11)
作者:  Evans, Chris D.;  Futter, Martyn N.;  Moldan, Filip;  Valinia, Salar;  Frogbrook, Zoe;  Kothawala, Dolly N.
收藏  |  浏览/下载:11/0  |  提交时间:2019/04/09
Comment on "Dissolved organic sulfur in the ocean: Biogeochemistry of a petagram inventory" 期刊论文
SCIENCE, 2017, 356 (6340)
作者:  Dittmar, Thorsten;  Stubbins, Aron;  Ito, Takamitsu;  Jones, Daniel C.
收藏  |  浏览/下载:5/0  |  提交时间:2019/11/27