Spatial Distribution of Pinus densiflora Stands by Topographv. Climate. and Soil Factors in Korea
Jeong Ho Yoon, Woo Kyun Leel, Chong Soo Lee, You Seung Kim and Chang un Choi

ABSTRACT : This study was cooducted to understand the reJatiooship between spatial distributioo of red pine (P. densiflora) forests in Korea and various growing factors, such as topological, climatic. and soil factors, and to suggest optimal site cooditions for red pine management. Digital forest cove map . current vegetation map. land cover map were used for preparing the spatial distribution map of red pine with the size of 100m x 100m.

About 99% of red pine stands in Korea was appeared Wider 640m of elevatioo and under 26 degree of slope . Occurrence frequency per Wlit area was increased to 300m and then decreased exponential curve form. In slope, occurrence frequency curve shows a Weibull distribution form in the rage from 0 degree to 45 degree and a cubic polynomial form in the range from 45 degree to 50 degree. About 99% red pine stands in Korea was appeared in the range of temperature in April of 6-14.2℃, mean annual temperature of 7.2-14.8℃, precipitation of 1,010-1,590 mm. About 42.2% of red pine stand was appeared in loam soil, 34.3% in sandy roam, and 15.3% in silt roam. About 44.7% of red pine stands in Korea was appeared in shallow depth of soil, and 45% in medium depth.

 Spatial distribution of red pine stands in Korea was proved to have a close relationship to elevation (r²: 0.913), aspect( r²:0.905), temperature( r²:0.790), precipitation ( r²:0.843).

Key words : Pinus densiflora, spatial distribution, topography, climate, soil.