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Forest Structure in Relation to Altitude and Part of Slope in the Mansugol Valley at Woraksan National Park  

Park In-Hyeop (College of Agriculture and Life Sciences, Sunchon National University)
Jang Jeong-Jae (College of Agriculture and Life Sciences, Sunchon National University)
Kim Kye-Seon (College of Agriculture and Life Sciences, Sunchon National University)
Publication Information
Korean Journal of Environment and Ecology / v.19, no.2, 2005 , pp. 99-105 More about this Journal
Abstract
The Mansugol valley forest in Woraksan National Park was studied to investigate forest structure in relation to altitude and part of the slope. Forty eight quadrats were set up in the valley forest along altitude of 380m to 915m and part of the slope, and vegetation analysis for the woody species in the tree and subtree layers were carried out. With increasing elevation belt, tree density and basal area of the tree layer decreased while basal area of the subtree layer increased. As elevation increased, the importance percentages of Quercus mongolica, Fraxinus rhynchophylla, Lindera obtusiloba and Acer mono increased while those of Pinus densiflora, Quercus variablias Quercus serrata and Styrax obassia decreased. Species diversities of the elevation belts including the top of the valley ranged from 0.351 to 0.903, and those of the parts of the slope ranged from 0.780 to 1.064. The range of similarity indices between elevation belts were $36.0\~67.3\%$, and the range of similarity indices between parts of the slope were $66.8\~75.1\%$. According to importance percentage and cluster analysis, the studied valley forest was classified into three forest communities of Pinus densiflora-Quecus species community in the low elevation belt and the middle part of the slope at the middle elevation belt, Quercus mongolica-broad-leaved tree species community in the high elevation belt and the lower and upper parts at the middle elevation belt, and Quercus mongolica community in the top area of the valley. The importace percentage of Quercus mongolica was significantly and negatively correlated with those of Pinus desiflora and Quercus serrata. There were significantly positive correlation among Pinus densiflora, Quercuss serata and Rhus trichocarpa.
Keywords
IMPORTANCE PERCENTAGE; SPECIES DIVERSITY; CLUSTER ANALYSIS; SPECIES CORRELATION;
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