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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: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.


  
Intraplate volcanism originating from upwelling hydrous mantle transition zone 期刊论文
NATURE, 2020
作者:  Calabrese, Claudia;  Davidson, Natalie R.;  Demircioglu, Deniz;  Fonseca, Nuno A.;  He, Yao;  Kahles, Andre;  Kjong-Van Lehmann;  Liu, Fenglin;  Shiraishi, Yuichi;  Soulette, Cameron M.;  Urban, Lara;  Greger, Liliana;  Li, Siliang;  Liu, Dongbing;  Perry, Marc D.;  Xiang, Qian;  Zhang, Fan;  Zhang, Junjun;  Bailey, Peter;  Erkek, Serap;  Hoadley, Katherine A.;  Hou, Yong;  Huska, Matthew R.;  Kilpinen, Helena;  Korbel, Jan O.;  Marin, Maximillian G.;  Markowski, Julia;  Nandi, Tannistha;  Pan-Hammarstrom, Qiang;  Pedamallu, Chandra Sekhar;  Siebert, Reiner;  Stark, Stefan G.;  Su, Hong;  Tan, Patrick;  Waszak, Sebastian M.;  Yung, Christina;  Zhu, Shida;  Awadalla, Philip;  Creighton, Chad J.;  Meyerson, Matthew;  Ouellette, B. F. Francis;  Wu, Kui;  Yang, Huanming;  Brazma, Alvis;  Brooks, Angela N.;  Goke, Jonathan;  Raetsch, Gunnar;  Schwarz, Roland F.;  Stegle, Oliver;  Zhang, Zemin
收藏  |  浏览/下载:118/0  |  提交时间:2020/05/13

Most magmatism occurring on Earth is conventionally attributed to passive mantle upwelling at mid-ocean ridges, to slab devolatilization at subduction zones, or to mantle plumes. However, the widespread Cenozoic intraplate volcanism in northeast China(1-3) and the young petit-spot volcanoes(4-7) offshore of the Japan Trench cannot readily be associated with any of these mechanisms. In addition, the mantle beneath these types of volcanism is characterized by zones of anomalously low seismic velocity above and below the transition zone(8-12) (a mantle level located at depths between 410 and 660 kilometres). A comprehensive interpretation of these phenomena is lacking. Here we show that most (or possibly all) of the intraplate and petit-spot volcanism and low-velocity zones around the Japanese subduction zone can be explained by the Cenozoic interaction of the subducting Pacific slab with a hydrous mantle transition zone. Numerical modelling indicates that 0.2 to 0.3 weight per cent of water dissolved in mantle minerals that are driven out from the transition zone in response to subduction and retreat of a tectonic plate is sufficient to reproduce the observations. This suggests that a critical amount of water may have accumulated in the transition zone around this subduction zone, as well as in others of the Tethyan tectonic belt(13) that are characterized by intraplate or petit-spot volcanism and low-velocity zones in the underlying mantle.


The widespread intraplate volcanism in northeast China and the unusual '  petit-spot'  volcanoes offshore Japan could have resulted from the interaction of the subducting Pacific slab with a hydrous mantle transition zone.


  
Support for the habitat amount hypothesis from a global synthesis of species density studies 期刊论文
ECOLOGY LETTERS, 2020, 23 (4) : 674-681
作者:  Watling, James, I;  Arroyo-Rodriguez, Victor;  Pfeifer, Marion;  Baeten, Lander;  Banks-Leite, Cristina;  Cisneros, Laura M.;  Fang, Rebecca;  Hamel-Leigue, A. Caroli;  Lachat, Thibault;  Leal, Inara R.;  Lens, Luc;  Possingham, Hugh P.;  Raheem, Dinarzarde C.;  Ribeiro, Danilo B.;  Slade, Eleanor M.;  Urbina-Cardona, J. Nicolas;  Wood, Eric M.;  Fahrig, Lenore
收藏  |  浏览/下载:46/0  |  提交时间:2020/07/02
Forest loss  habitat amount  patch size  sampling effect  
Giant virus diversity and host interactions through global metagenomics 期刊论文
NATURE, 2020: 1-+
作者:  Su, Jie;  Morgani, Sophie M.;  David, Charles J.;  Wang, Qiong;  Er, Ekrem Emrah;  Huang, Yun-Han;  Basnet, Harihar;  Zou, Yilong;  Shu, Weiping;  Soni, Rajesh K.;  Hendrickson, Ronald C.;  Hadjantonakis, Anna-Katerina;  Massague, Joan
收藏  |  浏览/下载:53/0  |  提交时间:2020/07/03

Analysis of metagenomics data revealed that large and giant viruses are globally widely distributed and are associated with most major eukaryotic lineages.


Our current knowledge about nucleocytoplasmic large DNA viruses (NCLDVs) is largely derived from viral isolates that are co-cultivated with protists and algae. Here we reconstructed 2,074 NCLDV genomes from sampling sites across the globe by building on the rapidly increasing amount of publicly available metagenome data. This led to an 11-fold increase in phylogenetic diversity and a parallel 10-fold expansion in functional diversity. Analysis of 58,023 major capsid proteins from large and giant viruses using metagenomic data revealed the global distribution patterns and cosmopolitan nature of these viruses. The discovered viral genomes encoded a wide range of proteins with putative roles in photosynthesis and diverse substrate transport processes, indicating that host reprogramming is probably a common strategy in the NCLDVs. Furthermore, inferences of horizontal gene transfer connected viral lineages to diverse eukaryotic hosts. We anticipate that the global diversity of NCLDVs that we describe here will establish giant viruses-which are associated with most major eukaryotic lineages-as important players in ecosystems across Earth'  s biomes.


  
Long term observations on stable isotope ratios in rainwater samples from twin stations over Southern India; identifying the role of amount effect, moisture source and rainout during the dual monsoons 期刊论文
CLIMATE DYNAMICS, 2019, 52 (11) : 6893-6907
作者:  Rahul, P.;  Ghosh, Prosenjit
收藏  |  浏览/下载:19/0  |  提交时间:2019/11/26
Stable isotopes  Amount effect  Monsoon  Convective activity  
Natural gas consumption of urban households in China and corresponding influencing factors 期刊论文
ENERGY POLICY, 2018, 122: 17-26
作者:  Liu, Guixian;  Dong, Xiucheng;  Jiang, Qingzhe;  Dong, Cong;  Li, Jiaman
收藏  |  浏览/下载:19/0  |  提交时间:2019/04/09
Chinese urban households  NGP  Natural gas consumption per capita  Feasible generalized least squares  Natural gas consumption amount  
Asymmetric Cloud-Shortwave Radiation-Sea Surface Temperature Feedback of Ningaloo Nino/Nina 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2018, 45 (18) : 9870-9879
作者:  Tozuka, Tomoki;  Oettli, Pascal
收藏  |  浏览/下载:10/0  |  提交时间:2019/04/09
Ningaloo Nino  Nina  shortwave radiation  cloud amount  sea surface temperature  ocean-atmosphere interaction  marine heatwave  
Decadal Trends in Wet Sulfur Deposition in China Estimated From OMI SO2 Columns 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2018, 123 (18) : 10796-10811
作者:  Zhang, X. Y.;  Chuai, X. W.;  Liu, L.;  Zhang, W. T.;  Lu, X. H.;  Zhao, L. M.;  Chen, D. M.
收藏  |  浏览/下载:19/0  |  提交时间:2019/04/09
long-term trends  wet sulfur deposition  SO2 columns  precipitation amount  China  
Vertical profile of cloud amount over Poland: Variability and uncertainty based on CloudSat-CALIPSO observations 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2018, 38 (11) : 4142-4154
作者:  Kotarba, Andrzej Z.
收藏  |  浏览/下载:23/0  |  提交时间:2019/04/09
CALIPSO  cloud amount  CloudSat  Poland  uncertainty  vertical profile  
Groundwater Isotopes Biased Toward Heavy Rainfall Events and Implications on the Local Meteoric Water Line 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2018, 123 (11) : 6259-6266
作者:  Li, Jie;  Pang, Zhonghe;  Kong, Yanlong;  Wang, Shufang;  Bai, Guoying;  Zhao, Hongyi;  Zhou, Dong;  Sun, Feng;  Yang, Zhongshan
收藏  |  浏览/下载:23/0  |  提交时间:2019/04/09
groundwater recharge  heavy rainfall  isotopes  LMWL  amount threshold