摘要
研究水生态环境功能的整体性是树立一个生命共同体的基础。本研究于2020年,对江苏省太湖流域49个水生态环境功能区水生态监控点位进行水质、底栖动物和浮游植物调查;评价了太湖流域水生态环境功能区底栖动物和浮游植物群落结构和其质量状况,分析了水质目标和水生态质量目标达标情况。研究结果表明,太湖流域57个点位共获得底栖动物物种94种,底栖动物群落前二位优势种为霍甫水丝蚓和河蚬,17个湖库点位共获得浮游植物物种247种,隶属7个门113属,硅藻门57种、蓝藻门51种、绿藻门107种、隐藻门7种、甲藻门9种、裸藻门15种和金藻门1种,优势种属于微囊藻属,太湖流域底栖动物、浮游植物群落结构呈向好发展趋势;太湖流域4个水生态功能分区中底栖动物、浮游藻类质量指数评价等级均为“一般”,均低于水质指数评价等级(“中”~“良”);对照2020年管理目标,太湖流域49个水生态环境功能分区水质目标达标率为81.6%,远高于水生态质量达标率(40.8%)。综上所述,本研究结果表明,水环境管理应尽快从水质目标管理向水质、水生态双重管理转变。
Illustrating the integrity of aquatic ecological environment function is the basis of establishing a life community.In this study,water quality,benthos and phytoplankton were investigated at 49 aquatic ecological function zones in Tai Lake Basin of Jiangsu Province in 2020.The community structure and quality of benthos and phytoplankton in the water ecological environment functional area of Tai Lake Basin were evaluated,and the realization of water quality objectives and aquatic ecological quality objectives were analyzed.The results showed that 94 species of benthos were identified from 57 sites in Tai Lake Basin,and the two predominant species of benthos community were Limnodrilus hoffmeisteri and Corbicula fluminea.247 species of phytoplankton were identified from 17 sites,categorizing into 113 genera of 7 phyla,57 species of Bacillariophyta,51 species of Cyanophyta,107 species of green algae,7 species of Cryptophylum,9 species of Dinoflagellata,15 species of Euglenophyta and 1 species of Chrysophyta.The dominant species is Microcystis.The community structure of benthos and phytoplank-ton are developing in a good direction;the grade evaluated by quality indexes of benthos and phytoplankton are lower than the grade of water quality evaluation in all the four aquatic ecological functional zones of Tai Lake Basin.Referring to the water quality and aquatic ecological quality goals of 2020,81.6%of the 49 aquatic ecological environment functional zones satisfy the water quality goal,which is much higher than ratio of the zones satisfying aquatic ecological quality(40.8%).This study implies that,water environment management should shift from focusing on sole water quality goal to considering both water quality and aquatic ecology.
作者
李娣
李旭文
吕学研
姜晟
蔡琨
高占啟
王甜甜
蔡永久
Li Di;Li Xuwen;Lv Xueyan;Jiang Sheng;Cai Kun;Gao Zhanqi;Wang Tiantian;Cai Yongjiu(Jiangsu Environmental Monitoring Center,Nanjing 210019,China;Nanjing Institute of Geography&Limnology,Chinese Academy of Sciences,Nanjing 210008,China)
出处
《生态毒理学报》
CAS
CSCD
北大核心
2023年第1期271-279,共9页
Asian Journal of Ecotoxicology
基金
2018年度江苏省环保科研课题(2018002)
2019年度江苏省环保科研课题(2019010)。
关键词
太湖流域
底栖动物
浮游植物
水生态
管理
Tai Lake Basin
benthos
phytoplankton
water ecology
administration
