The Research On Evolution Law Of Water Resource In Xiang River Basin

The water resources of the Xiangjiang River basin are richer. Nowadays, there are a lot of obvious water resources problems in the Xiangjiang River basin under the influences of natural and man-made factors. According to previous data years'hydrographic, climate and the water environment monitor data, the research on water resources evolution law is a relative advanced project. There researches may provide the scientific basis for the fathering and the development of the Xiangjiang River's water resources.Based on Mann-Kendall inspection methods and Wavelet analytic method, the research on the water resources evolution law in Xingjiang river basin under the natural changes and human activities is developed, the main conclusions are as follows:(1)From 1950 to 1999, The fluctuation tendency of temperature in Xiangjiang River basin is not obvious; The research on periodicity of temperature change in Xiangjiang River basin shows that there are three main oscillations periods. They are 13 year, 15 year and 32 year.(2)From 1952 to 1999, The fluctuation tendency of precipitation in Xiangjiang River basin is not obvious; The research on periodicity of precipitation change in Xiangjiang River basin shows that there are two main oscillations periods. They are 25 year and 28year.(3)From 1952 to 1999, The fluctuation tendency of evaporation in Xiangjiang River basin is not obvious; The research on periodicity of evaporation change in Xiangjiang River basin shows that there are three main oscillations periods. They are 13 year, 20year and 30 year.(4)From 1950 to 2006, The fluctuation tendency of runoff in Xiangjiang River basin is not obvious; The research on periodicity of runoff change in Xiangjiang River basin shows that there are three main oscillations periods. They are 19year, 20year and 32year.(5)In conclusion, the quality of Water Environment in Xiangjiang River basin has not prominent improved, although the pollution condition has released, the content of some pollutants existence of a significant upward trend.