DOI: 10.1016/j.foreco.2016.11.003
Scopus记录号: 2-s2.0-84999711612
论文题名: Understory vegetation dynamics 15 years post-thinning in 50-year-old Douglas-fir and Douglas-fir/western hemlock stands in western Oregon, USA
作者: Cole E. ; Newton M. ; Bailey J.D.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 384 起始页码: 358
结束页码: 370
语种: 英语
英文关键词: Late-seral habitat
; Plant diversity
; Structural diversity
; Vegetation management
; Vegetative cover
Scopus关键词: Ecosystems
; Reforestation
; Vegetation
; Late-seral habitat
; Plant diversity
; Structural diversity
; Vegetation management
; Vegetative cover
; Forestry
; canopy architecture
; coniferous forest
; forest management
; light availability
; long-term change
; overstory
; shrub
; spatial data
; species diversity
; stand structure
; thinning
; understory
; vegetation cover
; vegetation dynamics
; Oregon
; Pacific Northwest
; United States
; Pseudotsuga
; Pseudotsuga menziesii
英文摘要: Recent trends in forest management practices designed to restore or enhance late-successional structure for habitat values typically include provisions for the creation and maintenance of structural and compositional diversity within and among stands. The Pacific Northwest in particular has expanses of young, structurally simple forests that range from high stocking (unthinned and little understory development) to relatively lower stocking having been previously thinned or initially regenerated at low densities. We have remeasured two long-term study sites in Oregon, USA, for 15 years to examine structural development and understory persistence at a range of overstory canopy cover, spatial arrangement, and understory treatments (spraying and planting). Understory responses to thinning varied primarily by site and species group, given the range of pre-existing plant communities, and through time. In general, shrub cover increased after thinning, while forb cover increased initially after thinning and then declined. Though spraying effects were still visible 15 years after treatment driven by reductions in one dominant understory species, it had little effect on the long-term development of structure at these overstory densities. Indeed, the range of overstory densities and spatial arrangements in this study did not have any large effects because all of the thinning treatments resulted in increased light availability to the understory at least through fifteen years after thinning. Combining more extensive overstory removal and understory treatments likely can be used to stimulate heterogeneous structure and composition development in these forests, including the possible stimulation of persistent early-seral vegetation within older stands. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64587
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest Engineering, Resources, and Management, Oregon State University, Corvallis, OR, United States
Recommended Citation:
Cole E.,Newton M.,Bailey J.D.. Understory vegetation dynamics 15 years post-thinning in 50-year-old Douglas-fir and Douglas-fir/western hemlock stands in western Oregon, USA[J]. Forest Ecology and Management,2017-01-01,384