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Substrate regulation leads to differential responses of microbial ammonia-oxidizing communities to ocean warming 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Zheng, Zhen-Zhen;  Zheng, Li-Wei;  Xu, Min Nina;  Tan, Ehui;  Hutchins, David A.;  Deng, Wenchao;  Zhang, Yao;  Shi, Dalin;  Dai, Minhan;  Kao, Shuh-Ji
收藏  |  浏览/下载：11/0  |  提交时间：2020/07/21
Short-lived climate forcers have long-term climate impacts via the carbon-climate feedback 期刊论文
NATURE CLIMATE CHANGE, 2020
作者:  Fu, Bo;  Gasser, Thomas;  Li, Bengang;  Tao, Shu;  Ciais, Philippe;  Piao, Shilong;  Balkanski, Yves;  Li, Wei;  Yin, Tianya;  Han, Luchao;  Li, Xinyue;  Han, Yunman;  An, Jie;  Peng, Siyuan;  Xu, Jing
收藏  |  浏览/下载：25/0  |  提交时间：2020/07/21
Upper Midwest lakes are supersaturated with N-2 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (29) : 17063-17067
作者:  Loeks-Johnson, Brianna M.;  Cotner, James B.
收藏  |  浏览/下载：21/0  |  提交时间：2020/07/09
denitrification  nitrogen fixation  nitrogen cycling  biogeochemistry  
Progressive nitrogen limitation across the Tibetan alpine permafrost region 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Kou, Dan;  Yang, Guibiao;  Li, Fei;  Feng, Xuehui;  Zhang, Dianye;  Mao, Chao;  Zhang, Qiwen;  Peng, Yunfeng;  Ji, Chengjun;  Zhu, Qiuan;  Fang, Yunting;  Liu, Xueyan;  Xu-Ri;  Li, Siqi;  Deng, Jia;  Zheng, Xunhua;  Fang, Jingyun;  Yang, Yuanhe
收藏  |  浏览/下载：18/0  |  提交时间：2020/07/06
Global reconstruction reduces the uncertainty of oceanic nitrous oxide emissions and reveals a vigorous seasonal cycle 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (22) : 11954-11960
作者:  Yang, Simon;  Chang, Bonnie X.;  Warner, Mark J.;  Weber, Thomas S.;  Bourbonnais, Annie M.;  Santoro, Alyson E.;  Kock, Annette;  Sonnerup, Rolf E.;  Bullister, John L.;  Wilson, Samuel T.;  Bianchi, Daniele
收藏  |  浏览/下载：13/0  |  提交时间：2020/05/20
nitrous oxide  air-sea gas exchange  seasonal variability  nitrogen cycle  greenhouse gases  
Extracellular electron transfer-dependent anaerobic oxidation of ammonium by anammox bacteria 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Shaw, Dario R.;  Ali, Muhammad;  Katuri, Krishna P.;  Gralnick, Jeffrey A.;  Reimann, Joachim;  Mesman, Rob;  van Niftrik, Laura;  Jetten, Mike S. M.;  Saikaly, Pascal E.
收藏  |  浏览/下载：6/0  |  提交时间：2020/05/13
Hydrothermal (NN)-N-15-N-15 abundances constrain the origins of mantle nitrogen 期刊论文
NATURE, 2020, 580 (7803) : 367-+
作者:  Zhao, Steven;  Jang, Cholsoon;  Liu, Joyce;  Uehara, Kahealani;  Gilbert, Michael;  Izzo, Luke;  Zeng, Xianfeng;  Trefely, Sophie;  Fernandez, Sully;  Carrer, Alessandro;  Miller, Katelyn D.;  Schug, Zachary T.;  Snyder, Nathaniel W.;  Gade, Terence P.;  Titchenell, Paul M.;  Rabinowitz, Joshua D.;  Wellen, Kathryn E.
收藏  |  浏览/下载：14/0  |  提交时间：2020/05/13

Nitrogen is the main constituent of the Earth'  s atmosphere, but its provenance in the Earth'  s mantle remains uncertain. The relative contribution of primordial nitrogen inherited during the Earth'  s accretion versus that subducted from the Earth'  s surface is unclear(1-6). Here we show that the mantle may have retained remnants of such primordial nitrogen. We use the rare (NN)-N-15-N-15 isotopologue of N-2 as a new tracer of air contamination in volcanic gas effusions. By constraining air contamination in gases from Iceland, Eifel (Germany) and Yellowstone (USA), we derive estimates of mantle delta N-15 (the fractional difference in N-15/N-14 from air), N-2/Ar-36 and N-2/He-3. Our results show that negative delta N-15 values observed in gases, previously regarded as indicating a mantle origin for nitrogen(7-10), in fact represent dominantly air-derived N-2 that experienced N-15/N-14 fractionation in hydrothermal systems. Using two-component mixing models to correct for this effect, the (NN)-N-15-N-15 data allow extrapolations that characterize mantle endmember delta N-15, N-2/Ar-36 and N-2/He-3 values. We show that the Eifel region has slightly increased delta N-15 and N-2/Ar-36 values relative to estimates for the convective mantle provided by mid-ocean-ridge basalts(11), consistent with subducted nitrogen being added to the mantle source. In contrast, we find that whereas the Yellowstone plume has delta N-15 values substantially greater than that of the convective mantle, resembling surface components(12-15), its N-2/Ar-36 and N-2/He-3 ratios are indistinguishable from those of the convective mantle. This observation raises the possibility that the plume hosts a primordial component. We provide a test of the subduction hypothesis with a two-box model, describing the evolution of mantle and surface nitrogen through geological time. We show that the effect of subduction on the deep nitrogen cycle may be less important than has been suggested by previous investigations. We propose instead that high mid-ocean-ridge basalt and plume delta N-15 values may both be dominantly primordial features.


  
Woody litter protects peat carbon stocks during drought 期刊论文
NATURE CLIMATE CHANGE, 2020, 10 (4) : 363-+
作者:  Fenner, Nathalie;  Freeman, Chris
收藏  |  浏览/下载：7/0  |  提交时间：2020/05/13
Fresh groundwater discharge insignificant for the world's oceans but important for coastal ecosystems 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Luijendijk, Elco;  Gleeson, Tom;  Moosdorf, Nils
收藏  |  浏览/下载：6/0  |  提交时间：2020/05/13
Aggravation of reactive nitrogen flow driven by human production and consumption in Guangzhou City China 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Dong, Yue;  Xu, Linyu;  Yang, Zhifeng;  Zheng, Hanzhong;  Chen, Lei
收藏  |  浏览/下载：8/0  |  提交时间：2020/05/13