基于优势度的梅江流域综合评价方法研究

用ArcGIS软件中的水文扩展模块把梅江流域划分为若干子流域,在此基础上从流域自然条件、人类活动、流域状态3个方面出发,建立起适合梅江流域优势度综合评价的指标体系,然后用层次分析法和专家打分的方法确定指标的层次和权重,利用EMDS模型中的Netweaver模块把指标体系反映到知识库模型当中,用EMDS软件中的Priority Analyst模块计算出各子流域的综合优势度,并分为好、较好、一般、较差、差5个等级,做出流域综合优势度的空间分布图。研究结果能较好地反映自然条件、人类活动、流域状态对流域综合优势度的影响和作用。

The Comprehensive Assessment of Meijiang River Basin Based on Dominance

Sub-basins of Meijiang River basin has been divided by using the hydrologic extension modules of ArcGIS software. On the basis, an integrated evaluation system has been established based on natural conditions, human activities and were determined by AHP and expert grading valley states, and the hierarchy and weight of indexes method. Then the evaluation system was reflected into the knowledge base by using Netweaver module of EMDS and the integrated dominance of each subbasin was calculated by using the Priority Analysis module of EMDS model,which were divided into good, fair good, medium, poor, fair poor five levels. Also the spatial distribution of watershed integrated dominance was made. And the results can reflect the role of natural conditions, human activities and the valley states to watershed dominance.