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藉助于遥感图片与ＧＩＳ技术以及灌区内的潜水蒸发试验场试验结果，直接估算叶尔羌河灌区区域性潜水蒸发量。用遥感图所示确定土地利用类型，用ＧＩＳ技术对不同土地类型与不同地下水等埋深区面积进行统计，用试验场内不同土质不同潜水埋深的潜水蒸发观测资料（概括成经验公式）按不同土地类型计算潜水蒸发量，其中有植被的土地的潜水蒸发用降低蒸发面法处理。用本方法计算得潜水蒸发量结果与用水均衡法估算结果相近
With the aid of remote sensing images and GIS technology and the test results of the submersible evaporation test field in the irrigated area, the regional submarine evaporation in the Yarkant River irrigation area is directly estimated. Using remote sensing images to determine the type of land use, using GIS technology for different land types and different groundwater depth area statistics, with different soil depths of different submersible groundwater evaporation test data (summarized as empirical formula) according to Diving evaporation is calculated for different types of land, of which submersion evaporation from vegetation is treated by means of reduced evapotranspiration. The result of the submersible evaporation calculated by this method is similar to that of the water balance method