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针对当前水资源空间分配方法存在影响因素选择不全,权重设计主观性强,且难以适用于大尺度流域范围等问题,该文提出了一种面向长江流域的水资源空间分配模型。该模型选取了年均降雨量、地形坡度、地表植被覆盖和区域集水面积作为水资源分配的影响因子,利用相关性分析方法和AHP层次分析法优化了因子影响权重设计,实现了长江流域的水资源空间分配,并采用长江流域二级子流域的水资源量统计数据进行精度检验。实验结果揭示了长江流域水资源量在1km格网尺度的空间分布差异,表明了该文面向长江流域水资源空间分配模型的合理性和准确性。
Aiming at the problems such as the insufficient selection of influencing factors, the subjectivity of weight design, and the difficulty of applying to the scope of large-scale watershed, a spatial allocation model for water resources in the Yangtze River Basin is proposed. In this model, annual rainfall, topography gradient, surface vegetation cover and regional catchment area were selected as the influencing factors of water resources allocation. The correlation analysis method and AHP analytic hierarchy process were used to optimize the factor weight design, The spatial distribution of water resources, and the use of secondary water resources in the Yangtze River Basin, the amount of statistical data for accuracy testing. The experimental results reveal the spatial distribution of water resources in the 1km grid scale in the Yangtze River Basin, indicating the rationality and accuracy of the model for spatial distribution of water resources in the Yangtze River Basin.