| According to the temperature and precipitation data from 1980 to 2009 of the thirteen meteorological stations in the study area, this paper analyzed the climate change of the watershed which were the typical Karst region between Yangtze River and Pearl River in the recent thirty years and its temporal and spatial distribution characters in order to estimate the climate change trend in the past thirty yeas of the study area. The results showed that, （1）the whole trend of climate change of the study area in the three decades was that the average temperature was on the rise and the annual precipitation showed a decrease. （2）On the basis of the inter-annual variation trend, it was a temperature raising period in the 1990s and the precipitation was divided into three periods: the declining phase from 1980s to 1990s, the raising phase from 1990s to 2000s and the stationary phase since 2000s. （3）There were differences of the rate of climate change, the temperature change rate of the Pearl River basin was less than the Yangtze River basin while the precipitation change rate was opposite and the divide line爷s precipitation change rate was greater than that of the both basins. |
