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Study on Ecological Climate Division of Introduction and Cultivation of Loblolly Pine in Guangxi and Guangdong

Yang Zhangqi;Zheng Yiongguang(Forestry Research institute of Guangxi, Nanning 530001 ) (Forestry Research Institute of Guangdong, Guangzhou 510640 )  
This paper selected 16 climate factors which related to water and warmth, to make R-type principal component analysis,then selected five most important principal components which accumulated contribution reach to 84. 25%, to make fuzzy ISODATA cluster analysis, according to the results of fuzzy similarity priority ratio, this studied area was divided into three climatic regions such as the region siutable for loblolly me, the less siutable region and controlled region.
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