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中文摘要：
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。监测结果与统计结果比较接近,说明遥感手段是可行和有效的。在此基础上,结合历年的统计数据分析了青铜峡灌区近年作物种植结构变化特征及灌区水资源供给状况,认为水资源是决定灌区作物种植结构的制约性因素,作物种植结构调整应成为灌区主要农业节水手段之一。
英文摘要：
The spatial distribution of crop variety and corresponding planting area in Qingtongxia irrigation area, Ninxia Autonomous, China, is monitored by means of remote sensing. The validity of this method is verified by the agreement of the monitoring result with the statistic data. On this basis, the relationship between variation of crop variety and irrigation water are further analyzed. It is found that the water supply is the major factor restricting the variation of crop variety. Consequently, the regulation of crop variety is an important measure for saving the agricultural water use in this area.
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