Relationships between Geographical Distribution of Endangered Pinus kwangtungensis and Climate in China

According to geographical distribution data of Pinus kwangtungensis acquired through field investigation and pre-existing data as well as meteorological data acquired through spatial interpolation of climate factors from 113 meteorological stations in distribution area of P. kwangtungensis,seventeen indexes of vegetation-climate interaction were applied to study relationships between geographical distribution of P. kwangtungensis and climate in China.Results showed that P. kwangtungensis grew well in cool,wet environments.Geographical distribution regions of P. kwangtungensis were divided into three parts and according to the climate characteristics of its distribution temperature was a more important limitation on distribution than precipitation.Principal component analysis showed that the relative effect of climate indexes on the distribution of P. kwangtungensis followed the order thermal factor in temperature>precipitation>relative humidity.Finally,the article discusses the distribution trend in relation to climate change and provides suggestions for ex-situ conservation of P. kwangtungensis.