文献类型：会议论文

英文题名：A global overview of drought and heat-induced tree mortality reveals emerging climate change risks for forests

作者：Allen, Craig D.[1] Macalady, Alison K.[2,3] Chenchouni, Haroun[4] Bachelet, Dominique[5] McDowell, Nate[6] Vennetier, Michel[7] Kitzberger, Thomas[8,9] Rigling, Andreas[10] Breshears, David D.[11,12] Hogg, E. H. (Ted)[13] Gonzalez, Patrick[14] Fensham, Rod[15] Zhang, Zhen[16] Castro, Jorge[17] Demidova, Natalia[18] Lim, Jong-Hwan[19] Allard, Gillian[20] Running, Steven W.[21] Semerci, Akkin[22] Cobb, Neil[23,24]

第一作者：Allen, Craig D.

通信作者：Allen, CD[1]

机构：[1]US Geol Survey, Ft Collins Sci Ctr, Jemez Mt Field Stn, Los Alamos, NM 87544 USA;[2]Univ Arizona, Sch Geog & Dev, Tucson, AZ 85721 USA;[3]Univ Arizona, Tree Ring Res Lab, Tucson, AZ 85721 USA;[4]Univ Batna, Dept Biol, Batna 05000, Algeria;[5]Oregon State Univ, Dept Biol & Ecol Engn, Corvallis, OR 97330 USA;[6]Los Alamos Natl Lab, Los Alamos, NM 87544 USA;[7]Aix Marseille Univ, ECCOREV FR 3098, CEMAGREF, Aix En Provence, France;[8]Consejo Nacl Invest Cient & Tecn, INIBIOMA, Lab Ecotono, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina;[9]Univ Nacl Comahue, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina;[10]Swiss Fed Inst Forest Snow & Landscape Res WSL, CH-8903 Birmensdorf, Switzerland;[11]Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85721 USA;[12]Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ 85721 USA;[13]Canadian Forest Serv, No Forestry Ctr, Edmonton, AB T6H 3S5, Canada;[14]Univ Calif Berkeley, Ctr Forestry, Berkeley, CA 94720 USA;[15]Environm Protect Agcy, Queensland Herbarium, Toowong, Qld 4066, Australia;[16]Chinese Acad Forestry, Res Inst Forest Ecol Environm & Protect, Key Lab Forest Protect, State Forestry Adm, Beijing 100091, Peoples R China;[17]Univ Granada, Dept Ecol, Grp Ecol Terr, E-18071 Granada, Spain;[18]No Res Inst Forestry, Arkhangelsk 163062, Russia;[19]Korea Forest Res Inst, Dept Forest Conservat, Div Forest Ecol, Seoul 130712, South Korea;[20]FAO, Dept Forestry, I-00100 Rome, Italy;[21]Univ Montana, Numer Terradynam Simulat Grp, Missoula, MT 59812 USA;[22]Cent Anatolia Forestry Res Inst, TR-06501 Bahcelievler Ankara, Turkey;[23]No Arizona Univ, Dept Biol Sci, Flagstaff, AZ 86011 USA;[24]No Arizona Univ, Merriam Powell Ctr Environm Res, Flagstaff, AZ 86011 USA

会议论文集：Conference on Adaptation of Forests and Forest Management to Changing Climate with Emphasis on Forest Health

会议日期：AUG 25-28, 2008

会议地点：Umea, SWEDEN

语种：英文

外文关键词：Climate change; Drought effects; Forest die-off; Forest mortality; Global patterns; Tree mortality

年份：2010

摘要：Greenhouse gas emissions have significantly altered global climate, and will continue to do so in the future. Increases in the frequency, duration, and/or severity of drought and heat stress associated with climate change could fundamentally alter the composition, structure, and biogeography of forests in many regions. Of particular concern are potential increases in tree mortality associated with climate-induced physiological stress and interactions with other climate-mediated processes such as insect outbreaks and wildfire. Despite this risk, existing projections of tree mortality are based on models that lack functionally realistic mortality mechanisms, and there has been no attempt to track observations of climate-driven tree mortality globally. Here we present the first global assessment of recent tree mortality attributed to drought and heat stress. Although episodic mortality occurs in the absence of climate change, studies compiled here suggest that at least some of the world's forested ecosystems already may be responding to climate change and raise concern that forests may become increasingly vulnerable to higher background tree mortality rates and die-off in response to future warming and drought, even in environments that are not normally considered water-limited. This further suggests risks to ecosystem services, including the loss of sequestered forest carbon and associated atmospheric feedbacks. Our review also identifies key information gaps and scientific uncertainties that currently hinder our ability to predict tree mortality in response to climate change and emphasizes the need for a globally coordinated observation system. Overall, our review reveals the potential for amplified tree mortality due to drought and heat in forests worldwide. Published by Elsevier B.V.