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Asynchronous carbon sink saturation in African and Amazonian tropical forests 期刊论文
NATURE, 2020, 579 (7797) : 80-+
作者:  Wannes Hubau;  Simon L. Lewis;  Oliver L. Phillips;  Kofi Affum-Baffoe;  Hans Beeckman;  Aida Cuní;  -Sanchez;  Armandu K. Daniels;  Corneille E. N. Ewango;  Sophie Fauset;  Jacques M. Mukinzi;  Douglas Sheil;  Bonaventure Sonké;  Martin J. P. Sullivan;  Terry C. H. Sunderland;  Hermann Taedoumg;  Sean C. Thomas;  Lee J. T. White;  Katharine A. Abernethy;  Stephen Adu-Bredu;  Christian A. Amani;  Timothy R. Baker;  Lindsay F. Banin;  Fidè;  le Baya;  Serge K. Begne;  Amy C. Bennett;  Fabrice Benedet;  Robert Bitariho;  Yannick E. Bocko;  Pascal Boeckx;  Patrick Boundja;  Roel J. W. Brienen;  Terry Brncic;  Eric Chezeaux;  George B. Chuyong;  Connie J. Clark;  Murray Collins;  James A. Comiskey;  David A. Coomes;  Greta C. Dargie;  Thales de Haulleville;  Marie Noel Djuikouo Kamdem;  Jean-Louis Doucet;  Adriane Esquivel-Muelbert;  Ted R. Feldpausch;  Alusine Fofanah;  Ernest G. Foli;  Martin Gilpin;  Emanuel Gloor;  Christelle Gonmadje;  Sylvie Gourlet-Fleury;  Jefferson S. Hall;  Alan C. Hamilton;  David J. Harris;  Terese B. Hart;  Mireille B. N. Hockemba;  Annette Hladik;  Suspense A. Ifo;  Kathryn J. Jeffery;  Tommaso Jucker;  Emmanuel Kasongo Yakusu;  Elizabeth Kearsley;  David Kenfack;  Alexander Koch;  Miguel E. Leal;  Aurora Levesley;  Jeremy A. Lindsell;  Janvier Lisingo;  Gabriela Lopez-Gonzalez;  Jon C. Lovett;  Jean-Remy Makana;  Yadvinder Malhi;  Andrew R. Marshall;  Jim Martin;  Emanuel H. Martin;  Faustin M. Mbayu;  Vincent P. Medjibe;  Vianet Mihindou;  Edward T. A. Mitchard;  Sam Moore;  Pantaleo K. T. Munishi;  Natacha Nssi Bengone;  Lucas Ojo;  Fidè;  le Evouna Ondo;  Kelvin S.-H. Peh;  Georgia C. Pickavance;  Axel Dalberg Poulsen;  John R. Poulsen;  Lan Qie;  Jan Reitsma;  Francesco Rovero;  Michael D. Swaine;  Joey Talbot;  James Taplin;  David M. Taylor;  Duncan W. Thomas;  Benjamin Toirambe;  John Tshibamba Mukendi;  Darlington Tuagben;  Peter M. Umunay;  Geertje M. F. van der Heijden;  Hans Verbeeck;  Jason Vleminckx;  Simon Willcock;  Hannsjö;  rg Wö;  ll;  John T. Woods;  Lise Zemagho
收藏  |  浏览/下载:25/0  |  提交时间:2020/05/13

Structurally intact tropical forests sequestered about half of the global terrestrial carbon uptake over the 1990s and early 2000s, removing about 15 per cent of anthropogenic carbon dioxide emissions(1-3). Climate-driven vegetation models typically predict that this tropical forest '  carbon sink'  will continue for decades(4,5). Here we assess trends in the carbon sink using 244 structurally intact African tropical forests spanning 11 countries, compare them with 321 published plots from Amazonia and investigate the underlying drivers of the trends. The carbon sink in live aboveground biomass in intact African tropical forests has been stable for the three decades to 2015, at 0.66 tonnes of carbon per hectare per year (95 per cent confidence interval 0.53-0.79), in contrast to the long-term decline in Amazonian forests(6). Therefore the carbon sink responses of Earth'  s two largest expanses of tropical forest have diverged. The difference is largely driven by carbon losses from tree mortality, with no detectable multi-decadal trend in Africa and a long-term increase in Amazonia. Both continents show increasing tree growth, consistent with the expected net effect of rising atmospheric carbon dioxide and air temperature(7-9). Despite the past stability of the African carbon sink, our most intensively monitored plots suggest a post-2010 increase in carbon losses, delayed compared to Amazonia, indicating asynchronous carbon sink saturation on the two continents. A statistical model including carbon dioxide, temperature, drought and forest dynamics accounts for the observed trends and indicates a long-term future decline in the African sink, whereas the Amazonian sink continues to weaken rapidly. Overall, the uptake of carbon into Earth'  s intact tropical forests peaked in the 1990s. Given that the global terrestrial carbon sink is increasing in size, independent observations indicating greater recent carbon uptake into the Northern Hemisphere landmass(10) reinforce our conclusion that the intact tropical forest carbon sink has already peaked. This saturation and ongoing decline of the tropical forest carbon sink has consequences for policies intended to stabilize Earth'  s climate.


  
Cassini-Huygens' exploration of the Saturn system: 13 years of discovery 期刊论文
SCIENCE, 2019, 364 (6445) : 1046-1051
作者:  Spilker, Linda
收藏  |  浏览/下载:2/0  |  提交时间:2019/11/27
Jet stream dynamics, hydroclimate, and fire in California from 1600 CE to present 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (12) : 5393-5398
作者:  Wahl, Eugene R.;  Zorita, Eduardo;  Trouet, Valerie;  Taylor, Alan H.
收藏  |  浏览/下载:13/0  |  提交时间:2019/11/27
jet stream  precipitation  fire  California  paleoclimatology  
Ammonia emission control in China would mitigate haze pollution and nitrogen deposition, but worsen acid rain 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (16) : 7760-7765
作者:  Liu, Mingxu;  Huang, Xin;  Song, Yu;  Tang, Jie;  Cao, Junji;  Zhang, Xiaoye;  Zhang, Qiang;  Wang, Shuxiao;  Xu, Tingting;  Kang, Ling;  Cai, Xuhui;  Zhang, Hongsheng;  Yang, Fumo;  Wang, Huanbo;  Yu, Jian Zhen;  Lau, Alexis K. H.;  He, Lingyan;  Huang, Xiaofeng;  Duan, Lei;  Ding, Aijun;  Xue, Likun;  Gao, Jian;  Liu, Bin;  Zhu, Tong
收藏  |  浏览/下载:13/0  |  提交时间:2019/11/27
ammonia emission  China  PM2.5  acid rain  nitrogen deposition  
A long-term survey unveils strong seasonal patterns in the airborne microbiome coupled to general and regional atmospheric circulations 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2018, 115 (48) : 12229-12234
作者:  Caliz, Joan;  Triado-Margarit, Xavier;  Camarero, Lluis;  Casamayor, Emilio O.
收藏  |  浏览/下载:7/0  |  提交时间:2019/11/27
LTER  aeroplankton  bioaerosols  intercontinental dispersal  microbial forensics  
In situ collection of dust grains falling from Saturn's rings into its atmosphere 期刊论文
SCIENCE, 2018, 362 (6410) : 49-+
作者:  Hsu, Hsiang-Wen;  39;Donoghue, James
收藏  |  浏览/下载:2/0  |  提交时间:2019/11/27
Climate model shows large-scale wind and solar farms in the Sahara increase rain and vegetation 期刊论文
SCIENCE, 2018, 361 (6406) : 1019-1022
作者:  Li, Yan;  Kalnay, Eugenia;  Motesharrei, Safa;  Rivas, Jorge;  Kucharski, Fred;  Kirk-Davidoff, Daniel;  Bach, Eviatar;  Zeng, Ning
收藏  |  浏览/下载:12/0  |  提交时间:2019/11/27
What precipitation is extreme? 期刊论文
SCIENCE, 2018, 360 (6393) : 1072-1073
作者:  Pendergrass, Angeline G.
收藏  |  浏览/下载:4/0  |  提交时间:2019/11/27
Decline and poleward shift in Indian summer monsoon synoptic activity in a warming climate 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2018, 115 (11) : 2681-2686
作者:  Sandeep, S.;  Ajayamohan, R. S.;  Boos, William R.;  Sabin, T. P.;  Praveen, V.
收藏  |  浏览/下载:8/0  |  提交时间:2019/11/27
monsoon  low-pressure systems  climate change  precipitation extremes  
Transitory microbial habitat in the hyperarid Atacama Desert 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2018, 115 (11) : 2670-2675
作者:  Schulze-Makuch, Dirk;  Wagner, Dirk;  Kounaves, Samuel P.;  Mangelsdorf, Kai;  Devine, Kevin G.;  de Vera, Jean-Pierre;  Schmitt-Kopplin, Philippe;  Grossart, Hans-Peter;  Parro, Victor;  Kaupenjohann, Martin;  Galy, Albert;  Schneider, Beate;  Airo, Alessandro;  Froesler, Jan;  Davila, Alfonso F.;  Arens, Felix L.;  Caceres, Luis;  Cornejo, Francisco Solis;  Carrizo, Daniel;  Dartnell, Lewis;  DiRuggiero, Jocelyne;  Flury, Markus;  Ganzert, Lars;  Gessner, Mark O.;  Grathwohl, Peter;  Guan, Lisa;  Heinz, Jacob;  Hess, Matthias;  Keppler, Frank;  Maus, Deborah;  McKay, Christopher P.;  Meckenstock, Rainer U.;  Montgomery, Wren;  Oberlin, Elizabeth A.;  Probst, Alexander J.;  Saenz, Johan S.;  Sattler, Tobias;  Schirmack, Janosch;  Sephton, Mark A.;  Schloter, Michael;  Uhl, Jenny;  Valenzuela, Bernardita;  Vestergaard, Gisle;  Woermer, Lars;  Zamorano, Pedro
收藏  |  浏览/下载:16/0  |  提交时间:2019/11/27
habitat  aridity  microbial activity  biomarker  Mars