Study on Climatic Regionalization for Planting Litchi chinensis in Yunnan by Cluster Analysis

The climatic regions of planting Litchi chinensis was devided by the relationship between the growing of L.chinensis and meteorological conditions.According to the annual average lowest temperature of 30 years(AALT),51 sites(AALT-4 ℃) of 134 climatic sites in Yunnan province were ranged to available planting areas and the rest of 81 sites(AALT -4 ℃) were ranged to unavailable planting areas.Based on 19 climatic parameters,51 available planting areas were further divided into 4 zones(the most suitable zone(I),suitable zone(II),fairly suitable zone(III) and sub-suitable zone(IV)) by cluster analysis.I,II and III zones were the main producing areas of L.chinensis in Yunnan.