摘要
本文调查分析了清林径水库水质及浮游植物功能群特征,并应用冗余分析方法探讨影响浮游植物优势功能群的主要环境因素。结果表明,目前清林径水库处于贫营养至中营养状态,主要超标污染物为总氮,且以有机氮污染为主。本次调查共鉴定浮游植物110种,可划分为25个功能群,包含A、J、Y、W2、Lo、MP、S17个优势功能群。其中功能群A占据绝对优势,表征清洁、深水、贫营养的生境特征,与水环境调查结果相一致。冗余分析结果表明,清林径水库浮游植物优势功能群的分布明显受水环境因子影响,其中溶解氧、铁、化学需氧量、硝酸盐氮、氨氮和透深比是影响优势功能群丰度的主要因素,水库存在水体富营养化和水华风险。针对外来水水质相对较差的供水调蓄水库,从工程措施和管理手段两方面提出水环境保障措施建议,可为供水调蓄水库水质保障和管理提供借鉴。
As an important regulating reservoir for two large water supply projects,the water environment quality of Qinglinjing Reservoir is closely related to the water resource regulating and supply capacity of the water network in Shenzhen.In order to invest igate the characteristics of water pollution and phytoplankton function groups(PFGs),water and phytoplankton samples were ollcted in July 2019.The redundancy analysis(RDA)was employed to study the relationship between the dominant PFC is and environmental factors.Results showed that Qinglinjing Reservoir was in the oligotrophic mesotrophic state,with the total nitrogen(TN)as an excessive pollutant.A total of 110 species,belonging to 26 PFGs were identified,and the dominant PFGs were A,J,Y,W2,Lo,MP and SI.Function group A,indicating the habitat characteristics of dlean.deep and oligotrophic,showed the highest dominance index(0.587).The composition of phytoplankton functional groups was identical to the water qual-ity.The results of RDA indicated the abundance of the dominant PFGs was mainly affected by the dissolved oxygen,Fe,chemical oxygen demand,nitrate nitrogen,ammonia nitrogen and the ratio of transparency to depth.The degradation of organic nitrogen and the water from Dongjiang River will promote function group A and inhibit function groups J,Y,W2,Lo,MP and SI.So Qlinglinjing Reservoir is at the risk of eut rophication and bloom.Water environment protection measures were provided from the aspects of engineering measures and management means,which can be referenced by water quality protection and management of water supply and regulating reservoir.
作者
周瑾
刘丰
穆祥鹏
ZHOU Jin;LIU Feng;MU Xiangpeng(Shenzhen Eastem Water Resources Management Center,Shenzhen 518116,China;China Institute of Water Resources and Hydropouer Research,Beijing 100038,China)
出处
《南水北调与水利科技（中英文）》
CAS
CSCD
北大核心
2024年第S01期63-69,共7页
South-to-North Water Transfers and Water Science & Technology
基金
国家社会科学基金项目(22BJY066)。
关键词
清林径水库
浮游植物功能群
环境因子
水质保护
Qinglinjing Reservoir
phytoplankton functional groups
water quality protection
environmental factors
作者简介
周瑾(1982-),女,湖北荆州人,高级工程师,主要从事水利工程相关研究。E-mail:33952792@qq.com;通信作者:穆祥鹏(1979-),男,天津人,正高级工程师,博士,主要从事水利工程相关研究。E-mail:muxp@iwhr.com。
