嘉兴市长水塘河流水生态健康评价

Evaluation of Water Ecological Health of Changshuitang River in Jiaxing

水生态健康评价作为崭新的河湖生态系统评价工具和技术手段,在河湖管理中受到越来越多的认可和重视。通过对长水塘生态系统包括水文水质、物理结构、生物等方面进行充分理解,构建了一套适合平原河网地区河道水生态健康评价的体系。该体系对10个指标进行了分析评价,其中4项指标健康等级为优(80~100分)、3项指标为良(60~80分)、3项指标为中(40~60分),综合评定长水塘健康等级为良,同时该体系还分析了水生态系统受威胁状况及影响因子,提出河流水生态健康恢复对策建议,为河流生态保护和修复、水生生物多样性保护提供决策依据。

Water ecological health assessment,as a new tool and technical means for evaluating river and lake ecosystems,has been increasingly recognized and valued in river and lake management.Starting from the overall ecosystem of Changshuitang River,a comprehensive understanding of hydrological,water quality,physical structure,biology,and other aspects is needed to construct a system suitable for evaluating the ecological health of river water in plain river network areas.Through the analysis and evaluation of 10 indicators,among which 4 indicators have an excellent health level(80 to 100 points),3 indicators are good(60 to 80 points),and 3 indicators are in the middle(40 to 60 points),the comprehensive evaluation of the health level of Changshuitang River is good,and the threat status and impact factors of the water ecosystem are analyzed.Suggestions for ecological health restoration of river water are proposed,providing decision-making basis for river ecological protection and restoration,as well as aquatic biodiversity protection.