气候变化领域集成服务门户(CCPortal): Carbon loss from boreal forest wildfires offset by increased dominance of deciduous trees

CCPortal

DOI	10.1126/science.abf3903
	Carbon loss from boreal forest wildfires offset by increased dominance of deciduous trees
	Mack M.C.; Walker X.J.; Johnstone J.F.; Alexander H.D.; Melvin A.M.; Jean M.; Miller S.N.
发表日期	2021
ISSN	0036-8075
起始页码	280
结束页码	283
卷号	372 期号:6539
英文摘要	In boreal forests, climate warming is shifting the wildfire disturbance regime to more frequent fires that burn more deeply into organic soils, releasing sequestered carbon to the atmosphere. To understand the destabilization of carbon storage, it is necessary to consider these effects in the context of long-term ecological change. In Alaskan boreal forests, we found that shifts in dominant plant species catalyzed by severe fire compensated for greater combustion of soil carbon over decadal time scales. Severe burning of organic soils shifted tree dominance from slow-growing black spruce to fast-growing deciduous broadleaf trees, resulting in a net increase in carbon storage by a factor of 5 over the disturbance cycle. Reduced fire activity in future deciduous-dominated boreal forests could increase the tenure of this carbon on the landscape, thereby mitigating the feedback to climate warming. © 2021 American Association for the Advancement of Science. All rights reserved.
英文关键词	carbon; boreal forest; burning; carbon storage; deciduous tree; dominance; organic soil; soil carbon; warming; wildfire; Alaska; Article; carbon storage; catalysis; climate change; climate warming; combustion; deciduous plant; feedback system; landscape; taiga; wildfire; Picea mariana
语种	英语
来源期刊	Science (IF:41.037[JCR-2018],43.644[5-Year])
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244611
作者单位	Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ 86001, United States; Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ 86001, United States; Department of Biology, University of Florida, Gainesville, FL 32611, United States; Department of Biology, University of Saskatchewan, Saskatoon, SK S7J 5E2, Canada; Institute of Arctic Biology, University of Alaska, Fairbanks, AK 99700, United States; School of Science, Yukon University, Whitehorse, YT Y1A 5K4, Canada; School of Forestry and Wildlife Sciences, Auburn University, Auburn, AL 36849, United States; National Academies of Science, Engineering and Medicine, Washington, DC 20001, United States; Departement de Biologie, Universite de Moncton, Moncton, NB E1A 3E9, Canada
推荐引用方式 GB/T 7714	Mack M.C.,Walker X.J.,Johnstone J.F.,et al. Carbon loss from boreal forest wildfires offset by increased dominance of deciduous trees[J],2021,372(6539).
APA	Mack M.C..,Walker X.J..,Johnstone J.F..,Alexander H.D..,Melvin A.M..,...&Miller S.N..(2021).Carbon loss from boreal forest wildfires offset by increased dominance of deciduous trees.Science,372(6539).
MLA	Mack M.C.,et al."Carbon loss from boreal forest wildfires offset by increased dominance of deciduous trees".Science 372.6539(2021).