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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.


  
Recycling and metabolic flexibility dictate life in the lower oceanic crust 期刊论文
NATURE, 2020, 579 (7798) : 250-+
作者:  Zhou, Peng;  Yang, Xing-Lou;  Wang, Xian-Guang;  Hu, Ben;  Zhang, Lei;  Zhang, Wei;  Si, Hao-Rui;  Zhu, Yan;  Li, Bei;  Huang, Chao-Lin;  Chen, Hui-Dong;  Chen, Jing;  Luo, Yun;  Guo, Hua;  Jiang, Ren-Di;  Liu, Mei-Qin;  Chen, Ying;  Shen, Xu-Rui;  Wang, Xi;  Zheng, Xiao-Shuang;  Zhao, Kai;  Chen, Quan-Jiao;  Deng, Fei;  Liu, Lin-Lin;  Yan, Bing;  Zhan, Fa-Xian;  Wang, Yan-Yi;  Xiao, Geng-Fu;  Shi, Zheng-Li
收藏  |  浏览/下载:37/0  |  提交时间:2020/05/13

The lithified lower oceanic crust is one of Earth'  s last biological frontiers as it is difficult to access. It is challenging for microbiota that live in marine subsurface sediments or igneous basement to obtain sufficient carbon resources and energy to support growth(1-3) or to meet basal power requirements(4) during periods of resource scarcity. Here we show how limited and unpredictable sources of carbon and energy dictate survival strategies used by low-biomass microbial communities that live 10-750 m below the seafloor at Atlantis Bank, Indian Ocean, where Earth'  s lower crust is exposed at the seafloor. Assays of enzyme activities, lipid biomarkers, marker genes and microscopy indicate heterogeneously distributed and viable biomass with ultralow cell densities (fewer than 2,000 cells per cm(3)). Expression of genes involved in unexpected heterotrophic processes includes those with a role in the degradation of polyaromatic hydrocarbons, use of polyhydroxyalkanoates as carbon-storage molecules and recycling of amino acids to produce compounds that can participate in redox reactions and energy production. Our study provides insights into how microorganisms in the plutonic crust are able to survive within fractures or porous substrates by coupling sources of energy to organic and inorganic carbon resources that are probably delivered through the circulation of subseafloor fluids or seawater.


  
Transport of Pseudomonas aeruginosa in Porous Media Mediated by Low-Concentration Surfactants: The Critical Role of Surfactant to Change Cell Surface Hydrophobicity 期刊论文
WATER RESOURCES RESEARCH, 2020, 56 (2)
作者:  Liu, Guansheng;  Fang, Zhendong;  Zhong, Hua;  Shi, Liangsheng;  Yang, Xin;  Liu, Zhifeng
收藏  |  浏览/下载:7/0  |  提交时间:2020/07/02
surfactants  bacterial transport  cell surface hydrophobicity  cell surface charge  hydrophobic interactions  
Multi-model analysis of climate impacts on plant photosynthesis in China during 2000-2015 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2019, 39 (15) : 5539-5555
作者:  Yan, Hao;  Wang, Shao-Qiang;  Cao, Yun;  Xu, Ling-Ling;  Wu, Men-xin;  Cheng, Lu;  Mao, Liu-Xi;  Zhang, Xian-Zhou;  Liu, Yun-Fen;  Wang, Yan-Fen;  Chen, Shi-Ping;  Li, Ying-Nian;  Han, Shi-Jie;  Zhou, Guo-Yi;  Zhang, Yi-Ping;  Shugart, Herman H.;  Wang, Jun-Bang;  Zhao, Feng-Hua
收藏  |  浏览/下载:13/0  |  提交时间:2020/02/17
climate change  dry/wet climate  Gross primary production  meteorological factors  multi-model analysis  
Evolution of Radiation Belt Electron Pitch Angle Distribution Due to Combined Scattering by Plasmaspheric Hiss and Magnetosonic Waves 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019, 46 (6) : 3033-3042
作者:  Hua, Man;  Ni, Binbin;  Li, Wen;  Gu, Xudong;  Fu, Song;  Shi, Run;  Xiang, Zheng;  Cao, Xing;  Zhang, Wenxun;  Guo, Yingjie
收藏  |  浏览/下载:7/0  |  提交时间:2019/11/26
resonant wave-particle interactions  parametric study  plasmaspheric hiss  magnetosonic waves  combined scattering  diffusion simulations  
Raindrop Size and Flow Depth Control Sediment Sorting in Shallow Flows on Steep Slopes 期刊论文
WATER RESOURCES RESEARCH, 2018, 54 (12) : 9978-9995
作者:  Wang, L.;  Fang, N. F.;  Yue, Z. J.;  Shi, Z. H.;  Hua, L.
收藏  |  浏览/下载:5/0  |  提交时间:2019/04/09
raindrop size  flow depth  particle size  steep slope  
Hierarchically porous polymer coatings for highly efficient passive daytime radiative cooling 期刊论文
SCIENCE, 2018, 362 (6412) : 315-318
作者:  Mandal, Jyotirmoy;  Fu, Yanke;  Overvig, Adam C.;  Jia, Mingxin;  Sun, Kerui;  Shi, Norman N.;  Zhou, Hua;  Xiao, Xianghui;  Yu, Nanfang;  Yang, Yuan
收藏  |  浏览/下载:15/0  |  提交时间:2019/11/27
Twist angle-dependent conductivities across MoS2/graphene heterojunctions 期刊论文
NATURE COMMUNICATIONS, 2018, 9
作者:  Liao, Mengzhou;  Wu, Ze-Wen;  Du, Luojun;  Zhang, Tingting;  Wei, Zheng;  Zhu, Jianqi;  Yu, Hua;  Tang, Jian;  Gu, Lin;  Xing, Yanxia;  Yang, Rong;  Shi, Dongxia;  Yao, Yugui;  Zhang, Guangyu
收藏  |  浏览/下载:7/0  |  提交时间:2019/11/27
Shallow Seismicity Forecast for the India-Eurasia Collision Zone Based on Geodetic Strain Rates 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2018, 45 (17) : 8905-8912
作者:  Zheng, Gang;  Lou, Yidong;  Wang, Hua;  Geng, Jianghui;  Shi, Chuang
收藏  |  浏览/下载:11/0  |  提交时间:2019/04/09
geodetic strain rates  shallow seismicity forecast  India-Eurasia collision zone  block vs  continuum models  seismic gaps  
Recycled ancient ghost carbonate in the Pitcairn mantle plume 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2018, 115 (35) : 8682-8687
作者:  Wang, Xiao-Jun;  Chen, Li-Hui;  Hofmann, Albrecht W.;  Hanyu, Takeshi;  Kawabata, Hiroshi;  Zhong, Yuan;  Xie, Lie-Wen;  Shi, Jin-Hua;  Miyazaki, Takashi;  Hirahara, Yuka;  Takahashi, Toshiro;  Senda, Ryoko;  Chang, Qing;  Vaglarov, Bogdan S.;  Kimura, Jun-Ichi
收藏  |  浏览/下载:11/0  |  提交时间:2019/11/27
Pitcairn mantle plume  EM1  magnesium isotopes  ancient carbonate-bearing sediments