江苏盐城滨海湿地生态修复过程中的水环境质量评价

Water Environmental Quality Assessment based on Ecological Restoration Process of Coastal Wetland in Yancheng,Jiangsu Province

滨海湿地生态修复是提高滨海湿地生态系统功能与可持续利用、维护国家生态安全的重要途径,已上升为国家战略。以江苏省盐城滨海湿地生态修复工程为例,基于湿地修复区和引水补湿区两个区域,采用单因子水质标识指数法和模糊综合评价法,评价2016—2021年间生态修复区内的水环境质量,并开展了生态修复的成效评估。结果表明,研究区水环境的主要污染物为氮和有机物,水质处于Ⅱ级~Ⅴ级之间,在生态修复过程中其水质呈优化趋势,生态修复成效明显。

Coastal wetland ecological restoration is an important approach to improve the function,sustainable utilization of coastal wetland ecosystem,and maintain the national ecological security.It has become a national strategy.In this paper,taking Yancheng Nature Reserve in Jiangsu Province as an example,we comprehensively evaluated the water environment quality of the ecological restoration area from 2016 to 2021 by using single-factor water quality identification index method and fuzzy comprehensive method,and carried out ecological restoration effectiveness assessment.The results indicated that the key water pollutants in the study area were nitrogen and organics and the water quality ranged from levelⅡto levelⅤ.The water quality showed an optimization trend in the process of ecological restoration,and the ecological restoration effectiveness was obvious.