基于模糊综合评判的高原盆地城市水源地脆弱性评价

Vulnerability Assessment on Urban Water Sources Area in a Plateau Basin Based on Fuzzy Comprehensive Evaluation Method

根据高原盆地城市水源地脆弱性内涵,评价指标可量化性及不同水源地之间可比性,选取了水源地水文气象、生态环境、水源污染和地表扰动状况4个方面14个指标,构建了高原盆地城市水源地脆弱性指标体系.基于高原盆地城市水源地复杂性和指标评价标准界线的模糊性,采用层次分析法确定指标权重,应用模糊综合评判法建立评价模型,运用所建立的评价模型对昆明市松华坝水源地脆弱性进行了评价.结果表明,昆明市松华坝水源地为中度脆弱.其中,水文气象因子、水源污染因子处于中度脆弱状态,生态环境因子处于轻度脆弱状态,地表扰动因子介于轻度脆弱与中度脆弱状态之间.

According to the vulnerability of water sources area in a plateau basin, a vulnerability in dices system is built by choosing four aspects, in- cluding 14 representative indices, such as hydro- logic meteorology of the water sources area, eco- logical environment, water source pollution andprocess to determine the weight, as well as princi- pal component analysis. The model is used to as- sess the vulnerability of Songhuaba water sources of Kunming. It is found that the water sources are of moderate vulnerability. Wherein, the factor of hydrologic meteorology and water source pollution are of moderate vulnerability. Ecological environ- ment are of mild vulnerability. Surface disturbance is in a stage between mild and moderate vulnerabil- ity.