岱海流域水资源遥感调查评价

Survey and Assessment of Water Resources in Daihai Lake Basin with Remote Sensing Information

本研究以遥感信息为主要资料，对封闭的水文地质单元──岱海流域的水文下垫面类型进行目视解译分析，结合少量实测资料，根据水文学相似性质原理进行计算分区和水资源量计算。在地表径流量计算中，用降水量Ｐ与最大可能损失量Ｅ建立相关关系。在Ｐ＜６５０ｍｍ的北方地区，Ｐ与Ｅ的线性关系较好，其相关系数为０．９左右，不同类型区只是斜率和截距不同。

Taking the remote sensing information as major data,in this paper, a visual interpretationanalysis is made on hydrological underlying surface types in the Daihai Lake Basin,which is taken as an isolitedhydrogeological unit.Based on the similarity principle of hydrology,water resources are calculated with someobserved data after dividing the basin into some calculating units.In the calculation of the surfaee runoff,aninterrelationship is established between the precipitation(p)and the possible maximum loss(E).In thenorthern part of China with P>650mm, the linear relation between p and E is good and the correlationcoefficient is about 0.9.The slopes and intercepts are different for the various regions in the basin .