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Effect of Linear Development Projects on Forest Fragmentation in the Nakdong River Watershed  

Jung, Sung-Gwan (Department of Landscape Architecture, Kyungpook National University)
Park, Kyung-Hun (Department of Landscape Architecture, Kyungpook National University)
Oh, Jeong-Hak (Department of Landscape Architecture, Kyungpook National University)
Publication Information
Journal of Environmental Impact Assessment / v.11, no.3, 2002 , pp. 117-127 More about this Journal
Abstract
This study tested the usefulness of landscape indices for quantifying forest fragmentation due to linear development projects. Research was carried out in the middle-upper Nakdong River watershed, which has been affected by the expressway building, or national road-widening. Landscape indices were calculated from the forest cover maps before and after road-building using FRAGSTATS 3.1. We could successfully demonstrate the forest fragmentation based on landscape indices; (1) patch size decreased, and edge density and patch density increased (2) roads simplified patch shapes, especially in the larger patches, (3) patch core area size decreased, and core area density increased, (4) the distance increased between the focal patch and each of the other patches within the search radius (=1km) as a result of roads. We suggest several important needs for future researches, including continued investigation of scaling issues, development of indices that measure specific components of spatial pattern, and study of the relationships between forest fragmentation and ecological processes.
Keywords
forest fragmentation; landscape ecology; landscape indices; GIS;
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