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The Classification of Forest Types by Factor Analysis in Natural Forests of Dutasan  

Chung, Sang-Hoon (Dept. of Forest Management, Kangwon National Univ.)
Kim, Ji-Hong (Dept. of Forest Management, Kangwon National Univ.)
Publication Information
Journal of agriculture & life science / v.46, no.4, 2012 , pp. 21-30 More about this Journal
Abstract
The objective of this study was to comprehend inter-species association and factors affecting species composition by factor analysis and to classify forest types of natural forests in Dootasan. We examined the correlation (positive or negative) of the major species by correlation analysis, the selection of three factors affecting the species composition by factor analysis, cluster analysis on the basis of factor scores, and the evaluation of the results of forest type classification by ANOVA. The outputs of correlation analysis were closely associated with those of factor analysis. The first factor affecting species composition was found to be the decline phenomenon of Pinus densiflora during forest succession process. The second and third factors were growth environments in valley and slope, respectively. The cluster analysis was carried out based on three factors affecting the species composition. The results indicated that the study area was classified into four forest types as follows: Quercus mogolica-Acer mono-Fraxinus rhynchophylla community, Q. mongolica community, Q. mongolica-Tilia amunrensis community and Pinus densiflora community. The dominant species of each community in the four classified forest types were significantly different (p<0.05).
Keywords
ANOVA; Cluster analysis; Factor analysis; Forest types; Species correlation;
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