摘要
为全面准确地反映苏南运河水生态健康现状,筛选识别了苏南运河水生态健康表征指标,包括总氮和高锰酸盐指数.综合考虑苏南运河管理实际、实地考察结果以及对水质因子与水生生物的典范对应分析结果,从生境结构完整性、生态系统抗扰动弹性、社会服务功能可持续性3个方面选取15项指标构建苏南运河水生态健康综合评价指标体系,利用2020年10月-2021年7月苏南运河四个季节的水生态环境调查监测结果进行评价.结果表明,苏南运河总体为亚健康状态,镇江段为健康状态,常州、无锡和苏州段为亚健康状态.建议加强水生态修复及流域水环境综合管理,重点关注可指示水生态退化的关键水质指标,以实现苏南运河的可持续性发展.研究结果可为河流综合健康评价和水生态修复提供技术参考.
In order to comprehensively and accurately evaluate the water ecological health status of the Sunan Canal,we conducted the screening and identification of ecological health indicators of the Sunan Canal,including the index of total nitrogen and permanganate.Our assessment took into consideration the management strategy,field investigation results as well as the canonical correspondence analysis of water quality factors and aquatic organisms of the Sunan Canal.Three aspects and 15 indicators of ecological habitat structure integrity,ecosystem anti-disturbance elasticity,and social service function sustainability were selected to build the comprehensive evaluation index system of ecological health for the Sunan Canal.these indicators were based on the results of water ecology and environment investigation conducted throughout the four seasons from October 2020 to July 2021.Results indicated that the overall ecological health of Sunan Canal was in a sub-healthy state,with the Zhenjiang section beijing in a healthy state,and the section of Changzhou,Wuxi and Suzhou in a sub-healthy state.We suggested to enhance water ecology restoration and integrated management of water environment in the Sunan Canal,and to pay more attention to the key water quality indicators that can indicate water ecology degradation.This study provides valuable technical insights for comprehensive river health assessment and water ecological restoration efforts.It serves as a reference for decision-makers and stakeholders involved in the preservation and improvement of the Sunan Canal's ecological health.
作者
洪艺铭
王冬梅
王智源
陈求稳
黄玉
刘东升
祝秋恒
闫丹丹
吕浩博
HONG Yiming;WANG Dongmei;WANG Zhiyuan;CHEN Qiuwen;HUANG Yu;LIU Dongsheng;ZHU Qiuheng;YAN Dandan;LU Haobo(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098;Center for Eco-Environmental Research,Nanjing Hydraulic Research Institute,Nanjing 210029;Jiangsu Hydraulic Research Institute,Nanjing 210017;Yangtze Institute for Conservation and Development,Nanjing 210098)
出处
《环境科学学报》
CAS
CSCD
北大核心
2023年第9期407-417,共11页
Acta Scientiae Circumstantiae
基金
国家自然科学基金(No.52121006,52070132,U2040209)
江苏省优秀青年基金(No.BK20200053)
江苏省水利科技项目(No.2019002)。
