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根据塔里木河流域管理局提供的生态输水资料,进行系统整理及统计得到10次输水的时间、持续天数、输水量及水头到达处等信息,并基于ArcGIS 9.3软件将该信息标注在基础地理信息底图、遥感解译图上。选择了与生态输水同步的CBERS/CCD遥感影像,采用人机交互式目视解译的方法提取2000～2007年塔里木河下游输水河道、实际过水河道以及积水区,提取输水河长度、宽度、积水区域等信息,然后基于遥感解译信息来验证实际输水状况。结果表明:基于遥感技术获取的河道长度为514.13km,平均河道宽度为42.23m,与地面测量河道相比,其精度为97.5%。有水河道宽度与生态输水量呈现正相关。“漫溢”式的生态输水造成了大西海子水库到卡尔达依地势低洼区域的积水,与输水量、距离水库的距离相关。基于2000～2007年的遥感解译数据,生态输水资料提供的信息均是真实的。尽管基于遥感技术验证生态输水存在一定误差,但也能宏观动态监测实际输水过程。
Based on the ecological water conveyance data provided by the Tarim River Basin Management Bureau, systematically arrange and statistically obtain information such as the time of 10 water conveyance, the duration of days, water delivery and water head arrival, and mark this information based on the ArcGIS 9.3 software Geographic information map, remote sensing interpretation map. The CBERS / CCD remote sensing images synchronized with ecological water conveyance were selected. The man-machine interactive visual interpretation method was used to extract the water-conveying channels, the actual water-passing channels and the stagnant water areas in the lower reaches of the Tarim River from 2000 to 2007, Length, width, water area and other information, and then interpret the information based on remote sensing to verify the actual water status. The results show that the length of the river channel obtained based on remote sensing technology is 514.13km and the average width of the river channel is 42.23m, which is 97.5% more accurate than the surface measured river channel. There is a positive correlation between the width of watercourse and the amount of water transported by water. “Overflowing ” type of ecological water conveyance caused water accumulation in Daxihaizi Reservoir to the low lying area of Caldiae, which was related to the water conveyance and the distance from the reservoir. Based on the data from remote sensing interpretation from 2000 to 2007, the information provided by ecological water conveyance is true. Although there is some error in verifying ecological water conveyance based on remote sensing technology, the actual water conveyance process can also be macroscopically and dynamically monitored.