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Çѱ¹»ýÅÂÇÐȸ / v.23, no.1, 2000³â, pp.25-32
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GIS ±â¹ýÀ» ÀÌ¿ëÇÑ ÁöÇüÀû Ư¼º¿¡ µû¸¥ ¿ù¾Ç»ê ¼Ò³ª¹« ¿¬·û»ýÀåÀÇ ÀÌÁú¼º ±Ô¸í
( Analysis of Heterogeneous Tree-Ring Growths of Pinus densiflora with Various Topographical Characteristics in Mt. Worak Using GIS ) |
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| To analyze the relationship between climatic factors (monthly temperatures and precipitations) and the radial growths or Pinus densiflora with different topographical settings in Worak National Park, Korea, 20 stands were chosen and 10 trees were selected from each stand. After crossdating, each ring-width series was double detrended (standardized) by fitting first a negative exponential or straight regression line and secondly a 60-year cubic spline. The growth patterns coud be categorized by four groups using cluster analysis. Cluster ¥° stand has north aspect, but others have south or southwest aspects. Cluster ¥° (one), cluster ¥± (ten), and cluster ¥² (two) stands are located in lower. elevation (305¡580 m), however, cluster ¥³ (seven) stands are located in higher elevation, mostly in 560¢¦870 m. Cluster ¥± and ¥² stands are located at similar elevation with the same aspect, however, cluster ¥± stands are located on more rocky and stiff slope with shallow soil depth. The response functions were used to examine the difference in the relationships between climatic factors and tree growths among the 4 cluster chronologies. The climatic factors are not limiting the growth in the cluster ¥° stand as highly as in other cluster plots because of rather mesic conditions in the north slope. The precipitation in the spring appears to be the main limiting factor in the cluster ¥± stands. The topographical characteristics of the sites of cluster ¥±, shallow soil depths on the rocky slope in the south aspect at lower elevation, may enhance the sensitivity of growth to moisture stress. In cluster ¥² and cluster ¥³, winter and spring temperature prior to the growth become more important than for cluster ¥±. This pattern is com-mon for Pinus densiflora trees growing in higher. elevation (equation omitted 800 m) in South Korea. It nay be re-lated with preconditioning effects of temperature as the temperature decreases with increasing elevation (cluster ¥³) or in the valley (cluster ¥²). The results obtained by tree-ring analysis were digitalized by GIS and spatio-temporal information on tree-ring data and topographic setting were analyzed and displayed simultaneously. The results of this study can be used to predict the future change of Pinus densiflora ecosystem to climate change expected in central Korea. |
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| ±âÈĺ¯È;´ÙÁßȸ±Í;¹ÝÀÀÇÔ¼ö;¼Ò³ª¹«;½Ã-°ø°£Àû ÀÌÁú¼º;¿¬·û¿¬´ë;ÀÓ¸ñ»ýÀå;Áý¶ôºÐ¼®;Climate change;Cluster analysis;Dendrochronology;GIS;Korea;Multiple regression;Pinus densiflora;Response function;Spatio-temporal heterogeneity;Tree growths; |
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The Korean Journal of Ecology / v.23, no.1, 2000³â, pp.25-32
Çѱ¹»ýÅÂÇÐȸ
ISSN : 1225-0317
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200011921335902)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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