中文摘要：

为了对人工湿地水质进行科学合理地评价，将目前已成熟的水质评价方法引入到人工湿地水质评价中，构建了丰成分分析和多层次模糊综合评价相结合的人工湿地水质评价模型，并以石佛寺人工湿地为例进行了计算。评价结果表明，石佛寺人工湿地从进水区、缓冲区、核心区到出水区污染程度有降低的趋势，出水达到水功能区划水质III级的标准，这说明表面流人工湿地对水体污染物有较好的净化作用。分析不同时期水体的污染超标情况，验证了评判模型的可靠性。

英文摘要：

In order to evaluate water quality of constructed wetlands scientifically and reasonably, some mature methods of water quality evaluation were introduced into the water quality evaluation of constructed wetland. An evaluation model of constructed wetland water quality, based on principal component analysis and multi-level fuzzy comprehensive evaluation, was established and applied in calculation to evaluate the water quality in Shifosi constructed wetland. The results indicate pollution tends to decrease from entrance, buffer area, core, to exit. Water quality at exit area reaches the 3^rd grade of standard water quality in water function division, which shows the surface flow constructed wetland could purify pollutants. Comparison of excessive water pollution situations in different periods proves the dependability of this model.