气候变化领域集成服务门户(CCPortal): Fuel dynamics and its implication to fire behavior in loblolly pine-dominated stands after southern pine beetle outbreak

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DOI	10.1016/j.foreco.2020.118130
	Fuel dynamics and its implication to fire behavior in loblolly pine-dominated stands after southern pine beetle outbreak
	Xie H.; Fawcett J.E.; Wang G.G.
发表日期	2020
ISSN	0378-1127
卷号	466
英文摘要	Southern pine beetle (SPB) (Dendroctonus frontalis Zimm) outbreaks and wildfire occurrence in recent decades has triggered growing concerns regarding their possible interactions. However, few studies have quantified the fuel characteristics of SPB-killed stands, especially the dynamics of the resulting fuel complex. More importantly, how changes in the fuel complex will affect fire behavior remains unclear. Using field measurements in combination with fire modeling systems, we studied fuel dynamics and its implication to potential fire behaviors by sampling non-outbreak, early post-outbreak (2–3 years), and late post-outbreak (7–8 years) loblolly pine-dominated stands in Georgia and South Carolina, USA. We found that the loadings of 1-hr, 10-hr, 100-hr, 1000-hr fuels, and litter depth were significantly greater in post-outbreak stands than in non-outbreak stands. Stand structure was altered in post-outbreak stands, which contained fewer live pines and more hardwoods. We used the Fuel Characteristic Classification System (FCCS) combined with actual data to construct representative fuel beds from the field data. These customized fuel beds were then used to model surface fire behavior that could be altered by the changes in fuel loading and stand structure resulting from SPB outbreaks. Both FCCS and BehavePlus fire modeling systems predicted a faster rate of spread and longer flame lengths in post-outbreak stands than in non-outbreak stands. Late post-outbreak stands under extremely dry conditions were predicted to have the most extreme fire behavior. Our results fill a critical knowledge gap, which will help forest managers make informed decisions on the management of loblolly pine-dominated stands after the southern pine beetle outbreak. © 2020 Elsevier B.V.
关键词	Dynamics Fires Fuel gages Fuels Dendroctonus frontalis Field measurement Fire modeling systems Fuel characteristic classification systems Fuel characteristics Informed decision Southern pine beetle Stand structures Forestry beetle coniferous tree ecological modeling fire behavior stand structure Behavior Data Dynamics Fires Forestry Fuels Pinus Taeda Georgia South Carolina United States Dendroctonus frontalis Pinus taeda
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132810
推荐引用方式 GB/T 7714	Xie H.,Fawcett J.E.,Wang G.G.. Fuel dynamics and its implication to fire behavior in loblolly pine-dominated stands after southern pine beetle outbreak[J]. Forest Ecology and Management,2020,466.
APA	Xie H.,Fawcett J.E.,&Wang G.G..(2020).Fuel dynamics and its implication to fire behavior in loblolly pine-dominated stands after southern pine beetle outbreak.,466.
MLA	Xie H.,et al."Fuel dynamics and its implication to fire behavior in loblolly pine-dominated stands after southern pine beetle outbreak".466(2020).