气候变化领域集成服务门户(CCPortal): Tree traits influence response to fire severity in the western Oregon Cascades, USA

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DOI	10.1016/j.foreco.2018.11.047
	Tree traits influence response to fire severity in the western Oregon Cascades, USA
	Johnston J.D.; Dunn C.J.; Vernon M.J.
发表日期	2019
ISSN	0378-1127
起始页码	690
结束页码	698
卷号	433
英文摘要	Wildfire is an important disturbance process in western North American conifer forests. To better understand forest response to fire, we used generalized additive models to analyze tree mortality and long-term (1 to 25 years post-fire) radial growth patterns of trees that survived fire across a burn severity gradient in the western Cascades of Oregon. We also used species-specific leaf-area models derived from sapwood estimates to investigate the linkage between photosynthetic capacity and growth response. Larger trees and shade intolerant trees had a higher probability of surviving fire. Trees that survived fire tended to experience a reduction in growth immediately following fire, with the most pronounced growth suppression found in trees within stands burned at high severity. Radial growth response to fire over time differed markedly as a function of tree size. Smaller trees that survived fire generally experienced enhanced radial growth relative to small trees in unburned stands. Conversely, larger trees that survived fire experienced significant and persistent reductions in growth relative to large trees in unburned stands. There was a linear relationship between diameter and tree leaf area in stands burned at low severity, but a non-linear relationship between diameter and leaf area in stand burned at high severity. Generalized additive models are well suited to modeling non-linear mortality and growth responses to fire. This research provides a better understanding of how fire severity influences tree-growth, forest succession, as well as the long-term resilience of forests to disturbances. © 2018 Elsevier B.V.
英文关键词	Basal area increment; Cascade mountains; Douglas-fir; Fire severity; Generalized additive model (GAM); Leaf area; Monitoring Trends in Burn Severity (MTBS); Shade tolerance; Wildfire
语种	英语
scopus关键词	Fires; Incineration; Basal area increment; Burn Severity; Douglas fir; Fire severity; Generalized additive model; Leaf area; Shade tolerance; Wildfire; Forestry; basal area; coniferous forest; coniferous tree; diameter; fire; growth response; leaf area; model; monitoring; mortality; photosynthesis; shade tolerance; trend analysis; wildfire; Area; Combustion; Fires; Forestry; Growth; Models; Pseudotsuga; Trees; Cascade Range; Oregon; United States; Coniferophyta; Pseudotsuga; Pseudotsuga menziesii
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156237
作者单位	Oregon State University, College of Forestry, 140 Peavy Hall, 3100 SW Jefferson Way, Corvallis, OR 97333, United States; Humboldt State University, Department of Forestry and Wildland Resources, 1 Harpst St., Arcata, CA 95521-8299, United States
推荐引用方式 GB/T 7714	Johnston J.D.,Dunn C.J.,Vernon M.J.. Tree traits influence response to fire severity in the western Oregon Cascades, USA[J],2019,433.
APA	Johnston J.D.,Dunn C.J.,&Vernon M.J..(2019).Tree traits influence response to fire severity in the western Oregon Cascades, USA.Forest Ecology and Management,433.
MLA	Johnston J.D.,et al."Tree traits influence response to fire severity in the western Oregon Cascades, USA".Forest Ecology and Management 433(2019).