用NOAA图像监测冬小麦面积的方法研究

冬小麦种植面积是农情监测中一个重要的监测因素，对生产管理与产量预测有重要意义。该文在冬小麦与同期主要大宗作物绿度－时相曲线对比分析的基础之上，建立反映冬小麦种植区域的差值植被指数图像，采用遥感－统计的方法，对利用ＮＯＡＡ图像进行冬小麦种植面积遥感监测进行了初步研究。通过对我国冬小麦主产区的河北、河南和山东三省的监测实验证明，该方法适用于大范围的冬小麦种植面积遥感监测。

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.