DEVELOPMENTS CLUSTER AND DELIMITATION OF SOIL MOISTURE IN SHAANXI PROVINCE

In order to know overall the regularity of soil moisture variance in Shaanxi Province and to provide scientific basis for rational distribution of agriculture,the soil moisture has been classified by the method of fuzzy cluster and zoned by center condensation stepwise cluster on the basis of analysing variation of difference between precipitation and evaporation in time and space.The zoning index and method of soil moisture has been explored initially.