气候变化领域集成服务门户(CCPortal): Carbon starvation is absent regardless of season of burn in Liquidambar styraciflua L.

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DOI	10.1016/j.foreco.2020.118588
	Carbon starvation is absent regardless of season of burn in Liquidambar styraciflua L.
	Ruswick S.K.; O'Brien J.J.; Aubrey D.P.
发表日期	2021
ISSN	0378-1127
卷号	479
英文摘要	In the Southeastern United States, the function and stability of pine ecosystems depends on frequent low intensity fires. One of the critical effects of frequent fire is the inhibition of hardwood competition by removing above-ground stems (top-kill). Previous long-term studies have correlated early growing season burns with higher understory mortality when compared to dormant season burns. Seasonal differences in mortality from insufficient carbon reserves in roots after leaf flush were posited as the mechanism but this was never explicitly tested. In this experiment, we burned two-year-old pot-grown sweetgums (Liquidambar styraciflua L.) in the dormant season (February), growing season (May), and compared their physiological responses to plants that were unburned. By the end of the first post-burn growing season, mortality was higher after the dormant season burn than the growing season burn and unburned trees had nearly twice the mass of either the burned treatments. Tissue starch concentrations were similar across all treatments highlighting the resiliency of sweetgum carbon stocks to recover from above-ground stem removal regardless of season. We showed the critical importance of top-killing stems regardless of season of burn. Our results further suggest that dormant season fires can be more lethal to young sweetgum, possibly due to susceptibility of tender new shoots to freezing damage. © 2020
英文关键词	Fire management; Prescribed fire; Roots; Season of burn; Sweetgum; Top-kill
语种	英语
scopus关键词	Physiological models; Carbon starvation; Critical effects; Dormant seasons; Growing season; Long term study; Physiological response; Seasonal differences; Starch concentration; Carbon; coniferous forest; coniferous tree; dicotyledon; growing season; inhibition; mortality; seasonal variation; understory; Carbon; Damage; Ecosystems; Fires; Growing Season; Liquidambar; Mortality; Trees; United States; Liquidambar; Liquidambar styraciflua
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/154888
作者单位	Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA, United States; Center for Forest Disturbance Science, USDA Forest Service, 320 Green Street, Athens, GA 30602, United States; Savannah River Ecology Laboratory, University of Georgia, Aiken, SC, United States
推荐引用方式 GB/T 7714	Ruswick S.K.,O'Brien J.J.,Aubrey D.P.. Carbon starvation is absent regardless of season of burn in Liquidambar styraciflua L.[J],2021,479.
APA	Ruswick S.K.,O'Brien J.J.,&Aubrey D.P..(2021).Carbon starvation is absent regardless of season of burn in Liquidambar styraciflua L..Forest Ecology and Management,479.
MLA	Ruswick S.K.,et al."Carbon starvation is absent regardless of season of burn in Liquidambar styraciflua L.".Forest Ecology and Management 479(2021).