GSTDTAP  > 气候变化
DOI10.1088/1748-9326/ab1690
Tree mortality from fires, bark beetles, and timber harvest during a hot and dry decade in the western United States (2003-2012) (vol 12, 065005, 2017)
Berner, Logan T.1,4; Law, Beverly E.1; Meddens, Arjan J. H.2; Hicke, Jeffrey A.3
2019-05-01
发表期刊ENVIRONMENTAL RESEARCH LETTERS
ISSN1748-9326
出版年2019
卷号14期号:5
文章类型Correction
语种英语
国家USA
英文摘要

High temperatures and severe drought contributed to extensive tree mortality from fires and bark beetles during the 2000 in parts of the western continental United States. Several states in this region have greenhouse gas (GHG) emission targets and would benefit from information on the amount of carbon stored in tree biomass killed by disturbance. We quantified mean annual tree mortality from fires, bark beetles, and timber harvest from 2003-2012 for each state in this region. We estimated tree mortality from fires and beetles using tree aboveground carbon (AGC) stock and disturbance data sets derived largely from remote sensing. We quantified tree mortality from harvest using data from US Forest Service reports. In both cases, we used Monte Carlo analyses to track uncertainty associated with parameter error and temporal variability. Regional tree mortality from harvest, beetles, and fires (MORTH+B+F) together averaged 47.1 +/- 17.1 Tg AGC yr(-1) (+/- 95% confidence interval), indicating a mortality rate of 1.13 +/- 0.41% yr(-1). Harvest accounted for the largest percentage of MORTH+B+F (49%), followed by beetles (33%), and fires (18%). Tree mortality from harvest was concentrated in Washington and Oregon, where harvest accounted for 68%-83% of MORTH+B+F in each state. Tree mortality from beetles occurred widely at low levels across the region, yet beetles had pronounced impacts in Colorado and Montana, where they accounted for 53%-93% of MORTH+B+F. Tree mortality from fires was highest in California, though fires accounted for the largest percentage of MORTH+B+F in Arizona and New Mexico (similar to 50%). Drought and human activities shaped regional variation in tree mortality, highlighting opportunities and challenges to managing GHG emissions from forests. Rising temperatures and greater risk of drought will likely increase tree mortality from fires and bark beetles during coming decades in this region. Thus, sustained monitoring and mapping of tree mortality is necessary to inform forest and GHG management.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000467832700001
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
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/182826
专题气候变化
作者单位1.Oregon State Univ, Dept Forest Ecosyst & Soc, Corvallis, OR 97331 USA;
2.Univ Idaho, Dept Nat Resources & Soc, Moscow, ID 83844 USA;
3.Univ Idaho, Dept Geog, Moscow, ID 83844 USA;
4.No Arizona Univ, Sch Informat Comp & Cyber Syst, Flagstaff, AZ 86011 USA
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GB/T 7714
Berner, Logan T.,Law, Beverly E.,Meddens, Arjan J. H.,et al. Tree mortality from fires, bark beetles, and timber harvest during a hot and dry decade in the western United States (2003-2012) (vol 12, 065005, 2017)[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(5).
APA Berner, Logan T.,Law, Beverly E.,Meddens, Arjan J. H.,&Hicke, Jeffrey A..(2019).Tree mortality from fires, bark beetles, and timber harvest during a hot and dry decade in the western United States (2003-2012) (vol 12, 065005, 2017).ENVIRONMENTAL RESEARCH LETTERS,14(5).
MLA Berner, Logan T.,et al."Tree mortality from fires, bark beetles, and timber harvest during a hot and dry decade in the western United States (2003-2012) (vol 12, 065005, 2017)".ENVIRONMENTAL RESEARCH LETTERS 14.5(2019).
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