Rice yield estimation based on MOSIS-NDVI: case study of Chongqing Three Gorges warehouse district.

Taking Chongqing Three Gorges warehouse District as object of study,using MODIS-NDVI as a remote sense characteristic parameter,the growth condition of rice in the key growth period was analyzed and the yields of rice was predicted.Due to limitation of saturated NDVI data,NDVI in 0.2-0.8 range in every district and crop yields was selected to establish the model of rice yield estimation,and the correlation analysis was carried out.The results showed that relation coefficient was up to 0.75 in every key growth period.The comparison of forecasting result and actual outputs showed the forecasting was above 90 % in every areas or county,indicating that MODIS NDVI could be effectively used to monitor and estimate the rice yields.