气候变化领域集成服务门户(CCPortal): Season of burn effects on vegetation structure and composition in oak-dominated Appalachian hardwood forests

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DOI	10.1016/j.foreco.2018.11.027
	Season of burn effects on vegetation structure and composition in oak-dominated Appalachian hardwood forests
	Keyser T.L.; Greenberg C.H.; Henry McNab W.
发表日期	2019
ISSN	0378-1127
起始页码	441
结束页码	452
卷号	433
英文摘要	Previous research indicates that low-intensity single or multiple prescribed burns in oak-dominated upland hardwood forest do not substantially change stand structure or species composition of the arborescent regeneration layer, leading managers and ecologists to suggest that burns during the growing-season may better achieve restoration goals. We examined season of burn effects on dry-mesic oak-hickory forests in the southern Appalachian Mountains, North Carolina. Treatments included: (1) control (CON); (2) dormant-season burn (DSB), and (3) growing-season burn (GSB). Prior to burning and again after three growing seasons post-burn, we inventoried the forest overstory (stems ≥ 25 cm dbh), subcanopy (stems ≥ 5 and <25 cm dbh), sapling (stems ≥ 1.2 m and < 5 cm dbh), and seedling (stems < 1.2 m) strata. We found no effect of prescribed fire, regardless of burn season, on stem density or basal area of the overstory and subcanopy strata, leaving the light environment in the forest understory relatively unchanged. In general, treatment effects on the sapling and seedling layers were limited to the mesophytic species group, where seedling density post-burn was greater in GSB than both CON and DSB and sapling density post-burn was lower than pre-burn in DSB and GSB. Mortality of individually-tagged seedlings three growing seasons post-burn did not differ among treatments for the red oak, white oak, red maple, mesophytic, and pyrophilic species groups, and averaged 29.0, 28.5, 31.8, 29.3, and 25%, respectively. This study provides support for the notion that a single fire in a closed-canopy oak-hickory forest has little effect on forest structure or regeneration composition, regardless of the burn season. Prescribed fires should be repeated in subsequent years to assess whether the effects of burn season are amplified under a periodic burning regime. © 2018
英文关键词	Dormant-season burn; Growing-season burn; Mesophication; Quercus regeneration; Restoration
语种	英语
scopus关键词	Conservation; Hardwoods; Image reconstruction; Restoration; Appalachian hardwoods; Dormant seasons; Growing season; Mesophication; Quercus; Southern Appalachian Mountains; Species composition; Vegetation structure; Reforestation; basal area; burning; community composition; deciduous forest; deciduous tree; forest ecosystem; growing season; overstory; prescribed burning; restoration ecology; seedling; understory; vegetation structure; wood; Conservation; Growing Season; Hardwoods; Quercus; Reforestation; Restoration; Appalachians; North Carolina; United States; Acer rubrum; Carya; Quercus; Quercus alba; Quercus rubra
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/156268
作者单位	USDA Forest Service, Southern Research Station, Bent Creek Experimental Forest, 1577 Brevard Rd., Asheville, NC 28806, United States
推荐引用方式 GB/T 7714	Keyser T.L.,Greenberg C.H.,Henry McNab W.. Season of burn effects on vegetation structure and composition in oak-dominated Appalachian hardwood forests[J],2019,433.
APA	Keyser T.L.,Greenberg C.H.,&Henry McNab W..(2019).Season of burn effects on vegetation structure and composition in oak-dominated Appalachian hardwood forests.Forest Ecology and Management,433.
MLA	Keyser T.L.,et al."Season of burn effects on vegetation structure and composition in oak-dominated Appalachian hardwood forests".Forest Ecology and Management 433(2019).