DOI: 10.1016/j.foreco.2016.09.040
Scopus记录号: 2-s2.0-84992467130
论文题名: Composition, structure, and intra-stand spatial patterns along a disturbance severity gradient in a Quercus stand
作者: Cox L.E. ; Hart J.L. ; Dey D.C. ; Schweitzer C.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 381 起始页码: 305
结束页码: 317
语种: 英语
英文关键词: Canopy disturbance
; Quercus (oak)
; Stand development
; Succession
Scopus关键词: Storms
; Canopy disturbance
; Disturbance gradients
; Light disturbances
; Natural disturbance
; Quantitative information
; Quercus
; Stand development
; Succession
; Forestry
; community composition
; deciduous forest
; deciduous tree
; environmental disturbance
; forest canopy
; mortality
; spatial analysis
; stand dynamics
; succession
; taxonomy
; Alabama
; United States
; Fagus grandifolia
; Ostrya virginiana
; Quercus
; Quercus alba
英文摘要: Natural forest disturbances, which drive succession and development, differ in extent, severity, and return interval and range from frequent, gap-scale disturbances, to infrequent stand-replacing events. Most studies have focused on natural disturbances near the ends of the disturbance severity gradient and relatively little quantitative information is available on intermediate-severity disturbance. On 20 April 2011, an EF1 tornado tracked 5 km through the Sipsey Wilderness in Alabama and resulted in a patchwork mosaic of disturbed areas. To analyze the effects of the intermediate-severity wind event on composition, structure, and intra-stand spatial patterns, we established a 100 × 200 m (2 ha) rectangular plot perpendicular to the path of the storm within an affected Quercus alba stand. Based on the basal area removed (i.e. basal area of snags, snapped stems, or uprooted stems in decay class 1) by the wind event, we divided the plot into disturbance classes (minimal, light, and moderate) to compare compositional and structural attributes along a disturbance severity gradient. Composition varied little across the disturbance gradient, but diversity was highest in the moderately disturbed neighborhoods. Stems were relatively intermingled by species (i.e. each tree neighbored by trees of different species) in each disturbance severity class. However, some species, such as Fagus grandifolia and Ostrya virginiana exhibited less intermingling than Quercus spp. and stems classed in the “other spp.” taxonomic group. Large stems were disproportionately removed by the storm in the light and moderate disturbance categories. In the light disturbance class, O. virginiana was significantly less likely to experience mortality from the storm, which may in part explain the relatively high density of O. virginiana stems in the plot. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64680
Appears in Collections: 影响、适应和脆弱性
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作者单位: College of Natural Resources, University of California, Berkeley, CA, United States; Department of Geography, University of Alabama, Tuscaloosa, AL, United States; Northern Research Station, USDA Forest Service, Columbia, MO, United States; Southern Research Station, USDA Forest Service, Huntsville, AL, United States
Recommended Citation:
Cox L.E.,Hart J.L.,Dey D.C.,et al. Composition, structure, and intra-stand spatial patterns along a disturbance severity gradient in a Quercus stand[J]. Forest Ecology and Management,2016-01-01,381