Monitoring Planting Information of Hebei Province Winter Wheat Utilizing MODIS Data
利用MODIS 数据监测河北省冬小麦种植信息

According to the growing synchronizations of winter wheat,the growing average status,the soil types and the irrigation conditions,etc,referring to Hebei recent land-using data and ecological regionalization result,this paper devides the planting environment of winter wheat into five parts in Hebei province.On this basis,with the use of multi-temporal MODIS data and spot GPS location information,fully considering the growing characteristics of winter wheat and the surface vegetation,this paper finds out the non-winter wheat planting area's information in the growing season.When calculating the winter wheat's planting area and solving mixing pixels,this paper Improves the ratio of the wheat area and land into a new method which calculates the ratio of actual wheat planting area and those map area of wheat pixels.Combining the remote sensing knowledge,geographical knowledge and agricultural knowledge,making an system of monitoring planting information,later we use this system to extract the winter wheat planting information during 2004~2005 period and give the total area statistic error of 3.2%.