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RISS 인기검색어
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- 저자 : 정헌관 ( Jeong Heon Gwan ) (검색결과 4 건)
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김세현 ( Kim Se Hyeon ),장용석 ( Jang Yong Seog ),정헌관 ( Jeong Heon Gwan ),박형순 ( Park Hyeong Sun ),조계중 ( Jo Gye Jung ) 한국산림과학회 2003 한국산림과학회지 Vol.92 No.5
The objectives of this study, an analysis of the leaf morphological characteristics among the selected ten populations of Sorbus commixta Hedl., could be used fir the conservation of gene resources and could provide information on superior trees selection. The following results were obtained; Approximately, Mt. Sungin population at Ulleung island showed largrr values in overall characteristics and populations. On the other hand, Mt. Halla population at Jeju Island showed the smaller values of the overall characteristics and populations. ANOVA tests showed that there were statistically significant differences in all leaf morphological characteristics among the populations as well as individual trees within populations. Correlation analysis revealed that Length of Pinnate(LP) characteristics have highly positive relationship with the Length of Rachis(LR), and the Length of Terminal Leaflet(LTL) characteristics had highly negative relationship when related to the Terminal Leaflet Morphological Index(TLMI : WTL/LTL) characteristics. The results of principal component analysis(PCA) for leaf morphological characteristics showed that the first for principal componentx(PC`s) explained about 66% of the total variation. The first PC was correlated with those characteristics that were mainly related to the Width of Pinnate(WP), LTL, LP, and Width of Terminal Leaflet(WTL). The second PC was correlated with the TLMI, and Length of upper Rachis(LUR), WTL. Therefore, these characteristics were important to analysis of the variation for leaf morphological characteristics among selected popultions of S. commixta. Cluster analysis using single linkage method based on leaf morphological characteristics showed that ten selected populations of S. commixta could be clustered into five groups. Group I is Mt. Halla at Jeju island, Group Ⅱ is Mt. Sungin ar Ulleung island, Group Ⅲ is Mt. O-dae, Group Ⅳ is Mt. Balwang, and Group Ⅴ comprises Osan, Mt. Kaji, Mt. Duckyou, Mt. Sobaek, Mt. Jiri, and Mt. Taebaek. These results corresponded well with that o principal component analysis.
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김세현 ( Kim Se Hyeon ),장용석 ( Jang Yong Seog ),정헌관 ( Jeong Heon Gwan ),최영철 ( Choe Yeong Cheol ) 한국농림기상학회 2003 한국농림기상학회지 Vol.5 No.3
N/A This study was conducted to reveal the role of meteorological elements on the habitat characteristics and vegetative structure for S. commixta natural populations at Ulleung Island. Potential Evapotranspiration(PET) by elevation of Ulleung Island was estimated using Thornthwaite`s climatology estimating method. Also, Warm Index (WI), Coldness Index (CI) and vegetative composition by elevation were determined. The following results were obtained: The S. commixta trees were mainly distributed from an elevation of 300 m to 900 m. The WI and CI were about 66.8~95.0, -21.5~-7.7, respectively. Water deficit by precipitation and Potential Evapotranspiration (PET) mainly occurred from March to October at all elevations. But water deficits diminished with increased elevation. The apparent species in S. commixta natural populations at Ulleung Island were: 10 tree layer species, 17 subtree layer species, and 25 species in the shrub layer: In the tree layer S. commixta was dominant with the highest value of 46.85, then Fagus crenata 13.43, Ater mono and Tilia anuerensis 12.41 and 12.03, respectively. In the subtree layer A. mono was dominant with the highest value of 13.16, then F. crenata 12.68, Ater pseudo-sieboldianum and S. commixta 11.37 and 10.76, respectively. Dominant species and IV values in the shrub layer were Sava borealis (22.09) and Rhododendron brachpcarpum (10.51). The S. commixta natural forests were in a relatively stable condition because of the even distribution of its various indexes: the species diversity index of Shannon, the evenness index and dominance were 0.6199~1.1390, 0.6199~0.8825 and 0.1852~0.3801, respectively.
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