基于模糊数学的鹤泉湖水质评价研究

由于传统混合样品分析难以体现水体实际污染状况,因此清晰准确的水质空间分布研究将有利于开展细致的水环境管理.而模糊数学评价法具有准确性好、操作简单的优点,能够解决水质评价中存在的评价结果难于量化、人为分等定级影响评价结果等问题.因此,利用模糊数学的基本原理,建立水质监测的模糊评价模型,对鹤泉湖开展水质评价.结果显示,从单因子权重方面看,TP和COD是影响鹤泉湖水质的主要因素;从总体上看,鹤泉湖水质介于Ⅲ类和Ⅳ类之间,可以作为休闲娱乐用水区域;多点位综合分析发现,鹤泉湖水质存在一定空间分布,不同区域的水质状况并不一致.

Water Quality Evaluation of Hequan Lake Based on the Fuzzy Mathematics

Since the traditional mixed samples analysis is difficult to reflect the actual water pollution,therefore accurate spatial distribution of water quality research is necessary and helpful to carry out effective management of water environment.Fuzzy mathematical evaluation method has advantages of great or considerable accuracy,simple operation,making it possible to quantify the evaluation results and overcome the effect of artificial classification and gradation and so on.Thus,based on the basic principle of fuzzy mathematics,fuzzy evaluation model is used to assess water quality of Hequan Lake.The assessment outcomes show that TP and COD are main factors influencing water quality in terms of single factor weight ; second the value of water quality of Hequan Lake ranges from class Ⅲ to Ⅳ,according to which it can be regarded as a recreational water area; third multiple points analysis indicates that there exists spatial heterogeneity of distribution of water quality,namely water quality is not consistent in different regions.