DOI: 10.1016/j.foreco.2016.04.040
Scopus记录号: 2-s2.0-84966340088
论文题名: Origin, development, and impact of mountain laurel thickets on the mixed-oak forests of the central Appalachian Mountains, USA
作者: Brose P.H.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 374 起始页码: 33
结束页码: 41
语种: 英语
英文关键词: Dendrochronology
; Forest regeneration
; Kalmia latifolia
; Quercus spp
Scopus关键词: Hardwoods
; Landforms
; Reforestation
; Appalachian mountains
; Dendrochronology
; Eastern north america
; Forest regeneration
; Latifolia
; Quercus spp
; Regeneration process
; Seedling establishment
; Forestry
; deciduous tree
; defoliation
; dendrochronology
; environmental disturbance
; forest ecosystem
; mixed forest
; persistence
; regeneration
; seedling establishment
; shrub
; understory
; vegetation cover
; Appalachians
; United States
; Hexapoda
; Kalmia latifolia
; Quercus
英文摘要: Throughout forests of the northern hemisphere, some species of ericaceous shrubs can form persistent understories that interfere with forest regeneration processes. In the Appalachian Mountains of eastern North America, mountain laurel (Kalmia latifolia) may interfere in the regeneration of mixed-oak (Quercus spp.) forests. To verify this possibility, I conducted a dendroecology study from 2001 to 2005 in three mixed-oak stands with mountain laurel thickets to elucidate how and when the thickets originated, developed, and were impacting hardwood seedlings. At all three sites, the oldest mountain laurel dated to the 1930s when the stands emerged from a period of recurring disturbance. However, most of the mountain laurel has originated since the 1950s when the stands were generally undisturbed. More recently, insect defoliations have accelerated the development of the thickets by increasing available sunlight. A strong negative relationship exists between the percent cover of mountain laurel and the density of hardwood seedlings with 20-30% cover being sufficient to inhibit seedling establishment and survival. Perpetuating mixed-oak forests that contain mountain laurel thickets will require reducing shrub cover to less than 20-30% at the beginning of the regeneration process to help ensure adequate densities of hardwood seedlings. © 2016. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64871
Appears in Collections: 影响、适应和脆弱性
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作者单位: U.S. Forest Service, Northern Research Station, 335 National Forge Road, Irvine, PA, United States
Recommended Citation:
Brose P.H.. Origin, development, and impact of mountain laurel thickets on the mixed-oak forests of the central Appalachian Mountains, USA[J]. Forest Ecology and Management,2016-01-01,374