The time series drought monitoring results of Vegetation Temperature Condition Index(VTCI)of winter wheat in the Guanzhong Plain were used to develop an approach of estimating drought impact on wheat yield.Weighted VTCI values in the key growth periods and development stages of winter wheat were calculated by using analytic hierarchy process method in the five covered areas in the Guanzhong Plain,China.A linear correlation analysis was applied to study the correlation between wheat yields and the weighted VTCI values of the years 2000-2007.The results show there is significant correlation between wheat yield and weighted VTCI values in most part of the Plain,and they also prove that VTCI is feasible to monitor the drought in Guanzhong Plain.
impact estimationvegetation temperature condition indexanalytic hierarchy processwheat
NETL
NSTL
维普
万方数据
