抄録
The objective of this research is to estimate species composition of hardwood species using measurements on plots and GIS. The study area is secondary hardwood forests around Takigashira Bog. The subject species are Fagus crenata, Quercus serrata and Quercus crispula, which are dominated in this area. First, species composition was investigated in 13 plots, which were divided into 55 subplots, and DEM was created from digitized contour lines. Then, the relationship between species composition and topographical and environmental factors calculated from the DEM was examined using multiple regression analysis and regression equations were derived. Applying the equations on GIS, the species composition in terms of basal area and stocking for each species was estimated and mapped. Finally, the estimates were evaluated, comparing with the measurements.
