Identification of the Yancheng region water quality using GIS and fuzzy synthetic evaluation approach

摘要

This study was to systematically comprehend water quality status and its spatial pattern in Yancheng region, north of Jiangsu Province. According to the principle of fuzzy synthetic evaluation and GIS technology, water quality of the Yancheng region was analyzed based on 5 parameters which were selected from 39 monitoring sections. The spatial patterns of evaluation results of regional water quality was obtained to provide a Visual expression. The results indicated that river water quality varied significantly with different areas, the water quality of urban districts were inferior to that of rural areas; the primary contaminated rivers were Chuanchanghe and Xinyanggang; the water quality of upstream rivers inflow was not good, and only one of the six monitoring sections reached the functional zoning requirements. The water quality map could be used to identify the key water pollution area and put forward pollution prevention and management measures.