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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:103/0  |  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.


  
Topography and overstory mortality interact to control tree regeneration in spruce-fir forests of the southern Rocky Mountains 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 427: 106-113
作者:  Redmond, Miranda D.;  Kelsey, Katharine C.
收藏  |  浏览/下载:21/0  |  提交时间:2019/04/09
Subalpine fir  Engelmann spruce  Climate  Topography  Tree regeneration  Subalpine fir decline  Tree mortality  Disturbance  Abies lasiocarpa  Picea engelmannii  
Anthropogenic disturbance impacts stand structure and susceptibility of an iconic tree species to an endemic canker pathogen 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 425: 145-153
作者:  Paap, Trudy;  Burgess, Treena I.;  Rolo, Victor;  Steel, Emma;  Hardy, Giles E. St J.
收藏  |  浏览/下载:20/0  |  提交时间:2019/04/09
Coryrnbia calophylla  Quarnbalaria coyrecup  Tree decline  Southwest of Western Australia  Disease emergence  Fungal forest pathogen  
Low densities in white pine stands reduce risk of drought-incited decline 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 423: 84-93
作者:  Livingston, William H.;  Kenefic, Laura S.
收藏  |  浏览/下载:28/0  |  提交时间:2019/04/09
Pinus strobus  Predisposing factors  Forest health  Silviculture  Thinning  Drought  Tree decline  
Camouflaged as degraded wax: hygroscopic aerosols contribute to leaf desiccation, tree mortality, and forest decline 期刊论文
ENVIRONMENTAL RESEARCH LETTERS, 2018, 13 (8)
作者:  Burkhardt, Juergen;  Zinsmeister, Daniel;  Grantz, David A.;  Vidic, Sonia;  Sutton, Mark A.;  Hunsche, Mauricio;  Shyam, Pariyar
收藏  |  浏览/下载:20/0  |  提交时间:2019/04/09
aerosol pollution  Anthropocene  desiccant  forest decline  silver fir  tree mortality  VPD  
Different role of host and habitat features in determining spatial distribution of mistletoe infection 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2017, 384
作者:  Sayad, Ehsan;  Boshkar, Erfan;  Gholami, Shaieste
收藏  |  浏览/下载:29/0  |  提交时间:2019/04/09
Cross-correlation  Forest structure  Loranthus europaeus  Spatial ecology  Tree decline  
Highest drought sensitivity and lowest resistance to growth suppression are found in the range core of the tree Fagus sylvatica L. not the equatorial range edge 期刊论文
GLOBAL CHANGE BIOLOGY, 2017, 23 (1)
作者:  Cavin, Liam;  Jump, Alistair S.
收藏  |  浏览/下载:51/0  |  提交时间:2019/04/09
biogeography  climate change  distribution  forest  growth decline  resilience  stability  tree rings