DOI: 10.1016/j.foreco.2016.03.013
Scopus记录号: 2-s2.0-84960501853
论文题名: Interactions between macroclimate, microclimate, and anthropogenic disturbance affect the distribution of aspen near its northern edge in Quebec: Implications for climate change related range expansions
作者: Whitbeck K.L. ; Oetter D.R. ; Perry D.A. ; Fyles J.W.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 368 起始页码: 194
结束页码: 206
语种: 英语
英文关键词: Anthropogenic disturbances
; Aspen
; Boreal forest ecology
; Macro-microclimate interactions
; Remote sensing
; Species distribution
Scopus关键词: Aerial photography
; Ecology
; Forestry
; Geographic information systems
; Mapping
; Maps
; Population distribution
; Remote sensing
; Anthropogenic activity
; Anthropogenic disturbance
; Aspen
; Boreal forests
; Forest management policies
; Ground-based techniques
; Landsat thematic mapper images
; Species distributions
; Climate change
; anthropogenic effect
; boreal forest
; climate change
; deciduous tree
; disturbance
; environmental factor
; forest ecosystem
; forest management
; GIS
; ground-based measurement
; human activity
; Landsat thematic mapper
; landscape change
; microclimate
; population distribution
; range expansion
; remote sensing
; Canada
; Quebec [Canada]
; Coniferophyta
; Populus tremuloides
英文摘要: Policy to address the shifting tree species distributions anticipated in coming decades requires a sound understanding of how forests respond to environmental change. Using a combination of remote sensing, geographic information systems (GIS) analysis, and ground-based techniques, we explored the environmental factors associated with the distribution and abundance of trembling aspen (Populus tremuloides Michx.) across regional gradients near its northern range limit in northwestern Quebec, Canada. Although not regionally abundant, aspen is the main deciduous tree species in this conifer-dominated landscape. Regionally, the 51,200-km2 study area has very few settlements or roads, and little industrial resource extraction. Most of the region is inaccessible to humans except by foot or water travel. We utilized Landsat Thematic Mapper images from 2010 and 2011, and a robust collection of ground reference data developed from aerial photography, supported by field verification (vegetation sampling) where access permitted, to construct a thematic map of 11 land cover classes. The map highlights the spatial distribution of aspen, which represents only 0.3% of the study area. Map validation indicated an overall mapping accuracy of 74%, and the aspen predicted class was determined to be over 77% accurate. The regional-scale distribution of aspen stands ≥0.5 ha within the study area shows two patterns: (1) a shift toward greatest abundance on south-facing aspects with increasing latitude; and (2) a highly clustered pattern with a strong signal of concentration in areas of human activity. These patterns suggest that aspen range expansion due to climate warming will vary with topographic and other microclimatic factors (i.e. be a function of climate change interacting with landscapes) and that anthropogenic activities have the potential to influence future aspen abundance independently of climate. Forest management policies concerned with changing forest composition in these northern landscapes should recognize the potentially important role of human activity in driving the abundance of aspen. © 2016.Published by Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64976
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Natural Resource Sciences, McGill University, Macdonald Campus, Sainte-Anne-de-Bellevue, QC, Canada; Department of History and Geography, Georgia College, Milledgeville, GA, United States; Department of Forest Ecosystems and Society, Oregon State University, Corvallis, OR, United States
Recommended Citation:
Whitbeck K.L.,Oetter D.R.,Perry D.A.,et al. Interactions between macroclimate, microclimate, and anthropogenic disturbance affect the distribution of aspen near its northern edge in Quebec: Implications for climate change related range expansions[J]. Forest Ecology and Management,2016-01-01,368