摘要
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。
According to the fact that the existing research on water resource spatial allocation is insufficient of impact factor selection and weight design and it is difficult to apply to large range of river basin,a new spatial allocation model of water resources for the Yangtze River basin was proposed in this paper,in which the selection of the influence factors and the design of weights were optimized.In the experiments,to implement the spatial allocation of water resources,four influence factors including average annual rainfall,terrain slope,surface vegetation cover and regional catchment area were selected and correlation analysis and AHP method are used to optimized the design of influencing weight.The results validated by the water resources statistics of secondary river basin show that the differences of water resources in spatial distribution inside each kilometer grid roughly,which proves the rationality and preciseness of our proposed model.
作者
王世新
王利双
周艺
王福涛
刘雄飞
徐晨娜
吴亮
WANG Shixin WANG Lishuang ZHOU Yi WANG Futao LIU Xiongfei XU Chen na WU Liang(Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences, Bei ]ing 100101, China University Chinese Academy of Sciences, Beijing 100049, China)
出处
《测绘科学》
CSCD
北大核心
2017年第8期33-39,共7页
Science of Surveying and Mapping
基金
国家自然科学基金青年基金项目(41301501)
高分辨率对地观测系统重大专项(00-Y30B14-9001-14/16-3
00-Y30B15-9001-14/16-1
00-Y30B14-9001-14/16-1)
关键词
水资源
空间分配
格网化
层次分析法
water resources
spatial allocation
rasterization
analytic hierarchy process
