GSTDTAP

浏览/检索结果: 共8条,第1-8条 帮助

已选(0)清除 条数/页:   排序方式:
An observational study of the boundary-layer entrainment and impact of aerosol radiative effect under aerosol-polluted conditions 期刊论文
Atmospheric Research, 2020
作者:  Cheng Liu, Jianping Huang, Xinyu Tao, Lichen Deng, ... Hua-Yun Xiao
收藏  |  浏览/下载:6/0  |  提交时间:2020/11/09
Measurement report: Amino acids in fine and coarse atmospheric aerosol: concentrations, compositions, sources and possible bacterial degradation state 期刊论文
Atmospheric Chemistry and Physics, 2020
作者:  Ren-guo Zhu, Hua-Yun Xiao, Li Luo, Hongwei Xiao, Zequn Wen, Yuwen Zhu, Xiaozheng Fang, Yuanyuan Pan, and Zhenping Chen
收藏  |  浏览/下载:13/0  |  提交时间:2020/08/09
Differentiation Between Nitrate Aerosol Formation Pathways in a Southeast Chinese City by Dual Isotope and Modeling Studies 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (13)
作者:  Xiao, Hong-Wei;  Zhu, Ren-Guo;  Pan, Yuan-Yuan;  Guo, Wei;  Zheng, Neng-Jian;  Liu, Yong-Hui;  Liu, Cheng;  Zhang, Zhong-Yi;  Wu, Jing-Feng;  Kang, Chang-An;  Luo, Li;  Xiao, Hua-Yun
收藏  |  浏览/下载:19/0  |  提交时间:2020/08/18
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.


  
Sources and Transformation Processes of Proteinaceous Matter and Free Amino Acids in PM2.5 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (5)
作者:  Zhu, Ren-guo;  Xiao, Hua-Yun;  Zhu, Yuwen;  Wen, Zequn;  Fang, Xiaozheng;  Pan, Yuanyuan
收藏  |  浏览/下载:10/0  |  提交时间:2020/07/02
free amino acids  combined amino acids  PM2  5  nitrogen isotope  sources  transformation processes  
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.


  
Atmospheric aerosol compositions over the South China Sea: temporal variability and source apportionment 期刊论文
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2017, 17 (4)
作者:  Xiao, Hong-Wei;  Xiao, Hua-Yun;  Luo, Li;  Shen, Chun-Yan;  Long, Ai-Min;  Chen, Lin;  Long, Zhen-Hua;  Li, Da-Ning
收藏  |  浏览/下载:6/0  |  提交时间:2019/04/09
同位素地球化学 项目
项目编号:41425014; 经费:4000000(CNY); 起止日期:2015 / dc_date_end
项目负责人:  肖化云
收藏  |  浏览/下载:2/0  |  提交时间:2019/04/11