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本文提出了利用遥感资料进行流域地表水及浅层地下水评价的方法。利用遥感图像分析了流域下垫面结构,建立了适于遥感资料的下垫面分类系统,提出了以流域景观特征值为参数的流域地表水及浅层地下水资源评价模式。根据遥感资料和该模式,分别计算了验证流域地表水及浅层地下水资源,其相对误差分别为4.3％和5.1％;年径流计算相对误差8.8％,并获得了该流域水资源分布图。为利用遥感资料推求水资源,特别是浅层地下水资源及其在时、空上的分布,提供了新的方法,可作为无资料地区水资源评价的依据。
This paper presents a method of using remote sensing data to evaluate the surface water and shallow groundwater in the basin. Based on remote sensing images, the underlying surface structure of the basin was analyzed, and the underlying surface classification system suitable for remote sensing data was established. The assessment model of surface water and shallow groundwater resources was proposed based on the landscape eigenvalues of the basin. According to the remote sensing data and the model, the relative errors of surface water and shallow groundwater resources in the basin were calculated respectively, and the relative errors were 4.3% and 5.1% respectively. The relative error of annual runoff calculation was 8.8% and the water resource distribution map of the basin was obtained. It provides a new method to infer water resources, especially shallow groundwater resources and their temporal and spatial distribution by using remote sensing data, which can be used as the basis for evaluating water resources in non-material areas.