Abstract: Based on the 8 km resolution multi-temporal NOAA AVHRR-NDVI datasets and the daily precipitation data from 87 meteorological observation stations in 1982〖KG-*2〗-〖KG-*7〗1999, the interactions between NDVI and precipitation in Poyang Lake region were analyzed at annual and inter-annual scales by applying inter-decadal variations, empirical orthogonal function (EOF), and correlation analysis. There was a good spatial coincidence between the variations of NDVI a nd precipitation. In multi-year average, the NDVI variation lagged behind preci pitation change, and the inter-annual variation of NDVI had definite effects on the later precipitation. The correlation coefficients of NDVI and precipitation reached the peak with the time lags of 60, 70, and 80 days, being 0564, 057 1, and 0549, respectively. At seasonal scale, the correlation between NDVI and precipitation was significant, and the precipitation in spring and autumn was p articularly important for vegetation growth.

Key words: Robinia pseudoacacia, Water physiological ecology, Habitat, Loess Plateau