The spatial distribution of crop variety and corresponding planting area in Qingtongxia irrigation area, Ninxia Autonomous, China, is monitored by means of remote sensing.

• 摘要利用卫星图像对青铜峡灌区进行了2004年作物种植结构遥感监测，获得了各类主栽作物的种植面积及其空间分布。