Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13952 |
Differential declines in Alaskan boreal forest vitality related to climate and competition | |
Trugman, Anna T.1; Medvigy, David2,3; Anderegg, William R. L.1; Pacala, Stephen W.4 | |
2018-03-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:3页码:1097-1107 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Rapid warming and changes in water availability at high latitudes alter resource abundance, tree competition, and disturbance regimes. While these changes are expected to disrupt the functioning of boreal forests, their ultimate implications for forest composition are uncertain. In particular, recent site-level studies of the Alaskan boreal forest have reported both increases and decreases in productivity over the past few decades. Here, we test the idea that variations in Alaskan forest growth and mortality rates are contingent on species composition. Using forest inventory measurements and climate data from plots located throughout interior and south-central Alaska, we show significant growth and mortality responses associated with competition, midsummer vapor pressure deficit, and increased growing season length. The governing climate and competition processes differed substantially across species. Surprisingly, the most dramatic climate response occurred in the drought tolerant angiosperm species, trembling aspen, and linked high midsummer vapor pressure deficits to decreased growth and increased insect-related mortality. Given that species composition in the Alaskan and western Canadian boreal forests is projected to shift toward early-successional angiosperm species due to fire regime, these results underscore the potential for a reduction in boreal productivity stemming from increases in midsummer evaporative demand. |
英文关键词 | Alaska boreal forest climate change drought forest inventory growth decline insect-induced mortality terrestrial carbon cycle vapor pressure deficit |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425396700020 |
WOS关键词 | TREE MORTALITY ; BLACK SPRUCE ; INTERIOR ALASKA ; DROUGHT STRESS ; WHITE SPRUCE ; HALF-CENTURY ; BIOME SHIFT ; LEAF MINER ; GROWTH ; ECOSYSTEMS |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17489 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ Utah, Dept Biol, Salt Lake City, UT 84112 USA; 2.Princeton Univ, Program Atmospher & Ocean Sci, Princeton, NJ 08544 USA; 3.Univ Notre Dame, Dept Biol Sci, Notre Dame, IN 46556 USA; 4.Princeton Univ, Dept Ecol & Evolut Biol, Princeton, NJ 08544 USA |
推荐引用方式 GB/T 7714 | Trugman, Anna T.,Medvigy, David,Anderegg, William R. L.,et al. Differential declines in Alaskan boreal forest vitality related to climate and competition[J]. GLOBAL CHANGE BIOLOGY,2018,24(3):1097-1107. |
APA | Trugman, Anna T.,Medvigy, David,Anderegg, William R. L.,&Pacala, Stephen W..(2018).Differential declines in Alaskan boreal forest vitality related to climate and competition.GLOBAL CHANGE BIOLOGY,24(3),1097-1107. |
MLA | Trugman, Anna T.,et al."Differential declines in Alaskan boreal forest vitality related to climate and competition".GLOBAL CHANGE BIOLOGY 24.3(2018):1097-1107. |
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