DOI: 10.1016/j.foreco.2013.03.045
Scopus记录号: 2-s2.0-84876813981
论文题名: Disturbance size and severity covary in small and mid-size wind disturbances in Pennsylvania northern hardwoods forests
作者: Peterson C.J. ; Krueger L.M. ; Royo A.A. ; Stark S. ; Carson W.P.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 302 起始页码: 273
结束页码: 279
语种: 英语
英文关键词: Disturbance
; Gaps
; Light
; Northern hardwoods
; Size
; Windthrow
Scopus关键词: Disturbance
; Gaps
; Northern hardwoods
; Size
; Windthrows
; Climatology
; Hardwoods
; Light
; Forestry
; canopy gap
; climate conditions
; community composition
; community dynamics
; damage
; environmental disturbance
; environmental effect
; floristics
; forest dynamics
; forest ecosystem
; forest management
; size structure
; topographic effect
; wind profile
; windthrow
; Forestry
; Hardwoods
; Harvesting
; Light
; Meteorology
; Wind
; Pennsylvania
; United States
英文摘要: Do large disturbances differ from small ones in characteristics other than size? The importance of disturbances in forest dynamics is unquestioned, and the size of the disturbed area (size of gap) is the most common way of differentiating disturbances. But few studies have examined other disturbance characteristics to see if small and large disturbances are different. In northern hardwoods forests of northwestern Pennsylvania, a 2003 windstorm event created windthrow gaps ranging in size from 0.1. ha to >100. ha, allowing comparisons across a broad size spectrum, yet with similar species composition, soils, climate, and topography. We selected 17 gaps, ranging in size from 0.05 to 4.0. ha, to compare damage characteristics across a size spectrum. Disturbance severity (both proportion of trees fallen, and proportion of basal area fallen) increased significantly with gap size. Similarity in floristic composition between pre- and post-disturbance stands, decreased with increasing gap size. Larger gaps also caused greater reduction in mean size (diameter) of remaining trees. As expected, larger gaps resulted in greater canopy openness, but canopy openness was significantly influenced by both gap size and severity of canopy disturbance. These findings demonstrate that disturbance size and severity covary in northern hardwood windthrow gaps. Moreover, because of nonrandom impacts across species and size classes, immediate changes in size structure and composition of affected stands were greater in larger gaps. Managers seeking to implement disturbance-based management can use these findings to more closely mimic natural damage effects during harvest operations. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66557
Appears in Collections: 影响、适应和脆弱性
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作者单位: Dept. of Plant Biology, University of Georgia, Athens, GA 30602, United States; USDA Forest Service, Forestry Sciences Laboratory, Irvine, PA 16329, United States; Dept. of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, United States; Dept. of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, United States; Dept. of Biological Sciences, University of Tennessee, Martin, TN 38238, United States
Recommended Citation:
Peterson C.J.,Krueger L.M.,Royo A.A.,et al. Disturbance size and severity covary in small and mid-size wind disturbances in Pennsylvania northern hardwoods forests[J]. Forest Ecology and Management,2013-01-01,302