Planting distribution of evergreen broad-leaved trees and climatic factors affecting their zonal arrangements in Tohoku District

Abstract

This study attempts to consider the planting distribution of evergreen broadleaved trees and climatic factors affecting their zonal arrangements in Tohoku District located mainly on the cool-temperate deciduous forest zone. Data on 41 cities and 32 tree the planting agreement can be carried.
The results obtained from this study are as follows; 1) planting distribution depends mainly on thermal factors, in particular on winter coldness, which can be explained by the results of factor analysis and Spearman's rank-order correlation analysis. 2) Each city and tree can be classified into 5 groups by using monthly mean temperature of January (most cold month), obtained from the results of rearrangement of the planting-situtation table drawn throuth the analysis of Quantification Theory (3) and cluster analysis. 3) Potential zoning map for landscape planting of evergreen broad-leaved trees was drawn based on the monthly mean temperature of January.