globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.foreco.2013.11.005
Scopus记录号: 2-s2.0-84888872053
论文题名:
Soil water availability effects on the distribution of 20 tree species in western North America
作者: Mathys A.; Coops N.C.; Waring R.H.
刊名: Forest Ecology and Management
ISSN:  0378-1127
出版年: 2014
卷: 313
起始页码: 144
结束页码: 152
语种: 英语
英文关键词: 3-PG model ; Available soil water holding capacity ; Decision tree model ; Species distributions
Scopus关键词: Climate models ; Data mining ; Decision trees ; Soil moisture ; 3-pg models ; Available soil waters ; Decision tree modeling ; Decision tree models ; Maximum leaf area index ; Soil water availability ; Species distribution models ; Species distributions ; Population distribution ; population distribution ; regional climate ; satellite imagery ; soil fertility ; soil water ; species diversity ; tree ; water availability ; North America
英文摘要: The distribution of tree species is largely shaped by regional variation in climate and soils. Current models make very simple assumptions about soil water availability with limited inclusion into the predicted distribution of species. Recently, methods have been developed that integrate observations from satellites on maximum leaf area index. These remote sensing estimates, when combined with physiology can provide more detailed maps of available soil water holding capacity (ASWC) and soil fertility. By allowing soil properties as well as climate to vary across western North America, our process-based decision tree models predicted the occurrence of 20 tree species with an average accuracy of 84% (κ=0.79), based on their recorded presence and absence on 43,404 field plots. Changes in productivity and distributions were assessed with varying soil water inputs. ASWC was increased and decreased by 50% from the originally mapped values to evaluate the effects on predicted species distributions. Soil water availability helped explain the variation in the distribution of 75% of the tree species. We found that 30% of the species were very to extremely sensitive to changes in ASWC, while 45% were somewhat sensitive. We conclude that knowledge of soil properties generally improves overall accuracy of species distribution models. Our sensitivity analysis identified the most sensitive species to changes in water availability, and indicated where additional information on soil properties would be most crical to verify. © 2013 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66179
Appears in Collections:影响、适应和脆弱性

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作者单位: Department of Forest Resource Management, University of British Columbia, 2424 Main Mall, Vancouver, BC V6T 1Z4, Canada; College of Forestry, Oregon State University, Corvallis, OR 97331, United States

Recommended Citation:
Mathys A.,Coops N.C.,Waring R.H.. Soil water availability effects on the distribution of 20 tree species in western North America[J]. Forest Ecology and Management,2014-01-01,313
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