Abstract:According to the wide-ranging data on geographical distribution of Gordoniaacuminata, several indexes widely used for the study of vegetationedimate interaction wereapplied. These indexes induded Kira's warndh index and coldness index, Xu's humidityindex, Penman's formula, Thornthwaite's potential evapotranspiration and moisture index,Holdridge's life zone classification system index, and other single climate indexes. Therelationship between the distribution of G. acuminata and dimatic hydrothermal conditionhad been analysed, and the Kira's water-temperature indexes for the upper, lower andnorth lindts of the vertical distribution of G acuminata were discussed. The principalcomponent analysis showed that relative effects of climatic hydrothermal indexes on thedistribution of G acuminata were in the order thermal factor>precipitation factor>accumulated suhshine time>re1ative hunddity. The potential changes of G. acominatadistribution area under elevated CO2 concentration were predicted by .using Holdridge'sindex of life zone classification system and gas circulati0n model's conclusion.