DOI: 10.1016/j.foreco.2013.01.004
Scopus记录号: 2-s2.0-84878117854
论文题名: Long-term aspen cover change in the western US
作者: Kulakowski D. ; Kaye M.W. ; Kashian D.M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 299 起始页码: 52
结束页码: 59
语种: 英语
英文关键词: Populus tremuloides
; Quaking aspen
; Rocky Mountain forests
; Spatial scale
; Temporal scale
Scopus关键词: Populus tremuloides
; Quaking aspens
; Rocky Mountains
; Spatial scale
; Temporal scale
; Deforestation
; Biodiversity
; biodiversity
; deciduous tree
; forest ecosystem
; population decline
; population dynamics
; population outbreak
; spatiotemporal analysis
; succession
; vegetation cover
; Biodiversity
; Deforestation
; Forests
; Populus Tremuloides
; United States
; Coleoptera
; Coniferophyta
; Populus
; Populus tremuloides
; Scolytinae
英文摘要: Quaking aspen (Populus tremuloides Michx.) is one of the most important tree species in the western United States due to its role in biodiversity, tourism, and other ecological and aesthetic values. This paper provides an overview of the drivers of long-term aspen cover change in the western US and how these drivers operate on diverse spatial and temporal scales. There has been substantial concern that aspen has been declining in the western US, but trends of aspen persistence vary both geographically and temporally. One important goal for future research is to better understand long-term and broad-scale changes in aspen cover across its range. Inferences about aspen dynamics are contingent on the spatial and temporal scales of inquiry, thus differences in scope and design among studies partly explain variation among conclusions. For example, major aspen decline has been noted when the spatial scale of inquiry is relatively small and the temporal scale of inquiry is relatively short. Thus, it is important to consider the scale of research when addressing aspen dynamics.Successional replacement of aspen by conifer species is most pronounced in systems shaped by long fire intervals and can thus be seen as part of a normal, long-term fluctuation in forest composition. Aspen decline was initially reported primarily at the margins of aspen's distribution, but may be becoming more ubiquitous due to the direct effects of climate (e.g. drought). In contrast, the indirect effects of recent climate (e.g. forest fires, bark beetle outbreaks, and compounded disturbances) appear to favor aspen and may facilitate expansion of this forest type. Thus, future aspen trends are likely to depend on the net result of the direct and indirect effects of altered climate. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66619
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: School of Geography, Clark University, Worcester, MA, United States; Department of Ecosystem Science and Management, Pennsylvania State University, University Park, PA, United States; Department of Biological Sciences, Wayne State University, Detroit, MI, United States
Recommended Citation:
Kulakowski D.,Kaye M.W.,Kashian D.M.. Long-term aspen cover change in the western US[J]. Forest Ecology and Management,2013-01-01,299