Abstract:With the aid of the ARC/INFO 7.2.1 and ERMapper 5.5,using the ground meteorological data and multitemporal NOAA AVHRR NDVI data,based on the estimations of PAR absorbed by vegetation and the light utilization efficiency of vegetation,we estimated the net primary production(NPP) in Guangdong province,China,which mainly lies in subtropical and tropical monsoon climate zones.The results showed that:①The assessad values of NPP were consistent with the values of NPP in the same regions before,so the above metho...