The Multi-time Scale Analysis on Climate Change and Runoff Processes in the Tianshan Mountains,Xinjiang
Based on the temperature,precipitation and annual runoff data of the Tianshan Mountains,the paper studied the changing trend and multi-time scale correlation between the annual runoff and climatic factors by using methods of wavelet transform and nonparametric test.The results show that： 1） the increasing trends of the annual runoff,temperature and precipitation are significant in the Manas River Basin and Tarim River Basin;2） the primary periods of the temperature are respectively 11,18 and 22 years,that of precipitation are 10,20 and 22 years on decadal time scale in the headstream areas of the Tarim River Basin;in addition,the temperature of the Manas River Basin holds the periods of 10 and 22 years and the precipitation represents the periodic variation of 20 and 22 years;meanwhile,both temperature and precipitation show the inter-annual periodic variation of 3-6 years in the headstream areas of the Manas River and Tarim River;3） the abrupt change points of annual runoff,temperature and precipitation occurred respectively in 1993,1993 and 1992,however,that of the Manas River are significant in 1995,1988 and 1996;and 4） the multi time scale correlativity is significant between the annual runoff and climatic factors in the headstream areas of the two basins.
NETL
NSTL
万方数据
维普
