WinterWheat Sown Area Estimation Using NOAAAVHRR Data

Winterwheat sown area on national or regional scale is a piece of important information for agricultural management and production estimation.Based on the comparative analysis of the normalized difference vegetation index （NDVI）　time series of winterwheat and other main crops,　a kind of difference image of NDVI　was established,and a remote sensingstatistic method was developed to forcast winterwheat sown area. The case studies of Hebei,Henan and Shandong Provinces， which are the main winterwheat areas in China， showed this method is adapt to winterwheat sown area estimation over a large area by means of remote sensing using NOAA AVHRR data.