Skip to Main Content
Forest fragmentation in the Pacific Northwest: quantification and correlationsAuthor(s): Brett J. Butler; Jennifer J. Swenson; Ralph J. Alig
Source: Forest Ecology and Management. 189: 363-373.
Publication Series: Miscellaneous Publication
Station: Northeastern Research Station
PDF: Download Publication (1010.84 KB)
DescriptionA forest fragmentation index was produced for western Oregon and western Washington that combined measures of forested area, percentage edge, and interspersion. While natural, human land-cover, and human land-use processes contribute to forest fragmentation in the region, the drivers of these processes are categorically different. Here we examine forest fragmentation caused by human land-use decisions, which accounts for 20% of the total forest edge in the region. Using multiple linear regression, we developed a model with socio-economic and environmental predictor variables that explains 80% of the variance of the forest fragmentation index across the region. Population density, income, and percentage agriculture were all significant and positively correlated with the fragmentation index. Significantly negative correlations were found between the forest fragmentation index and distance to highway, percentage federal land, slope, and a dummy variable indicating land in Oregon. The three components of the fragmentation index were used as predictor variables in separate regression models and yielded results similar to the composite index. Models run separately for western Oregon and western Washington were similar to the regional model except that distance to highway was only significant in the western Oregon model and income was only significant in the western Washington model.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, email@example.com if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationButler, Brett J.; Swenson, Jennifer J.; Alig, Ralph J. 2004. Forest fragmentation in the Pacific Northwest: quantification and correlations. Forest Ecology and Management. 189: 363-373.
Keywordsland-use, land-rent, spatial patterns
- FIA photointerpretation in Southern New England: a tool to determine forest fragmantation and proximity to human development.
- Modeling the spatially dynamic distribution of humans in the Oregon (USA) coast range.
- Human well-being and land cover types in the southeastern U.S.A.
XML: View XML