二滩水库近5年水质演变趋势及相关性分析  

Variation Trend and Correlation Analysis of Water Quality in Recent 5 Years in Er' tan Reservoir

作　　者：杨玖 白羽 张利 王小将 陈美芳 YANG Jiu;BAI Yu;ZHANG Li;WANG Xiao-jiang;CHEN Mei-fang(Panzhihua Municipal Environmental Monitoring Station,Panzhihua,Sichuan 617000, China;Panzhihua Yanbian County of Municipal Environmental Monitoring Station y Panzhihua ,Sichuan 617000, China;Panzhihua Renhe District of Municipal Environmental Monitoring Station y Panzhihua,Sichuan 617000, China)

机构地区：[1]攀枝花市环境监测中心站,四川攀枝花617000 [2]攀枝花市盐边县环境监测站,四川攀枝花617000 [3]攀枝花市仁和区环境监测站,四川攀枝花617000

出　　处：《四川环境》2018年第6期88-94,共7页Sichuan Environment

摘　　要：根据2013～2017年水质逐月监测数据资料,对二滩水库水质和营养化状态变化进行分析,探讨了二滩水库水质演变规律富营养化发展趋势及其主要影响因子。结果表明,水温、pH、溶解氧、总磷、总氮、氨氮、透明度、生化需氧量和叶绿素a浓度均存在显著年际变化;综合营养状态指数显示水库营养状态由中营养逐步向贫营养转变;相关性分析显示,各指标之间存在着一定的相关性;出库断面水质比入库断面水质较好;近5年间二滩水库水质逐步变好,尤其是2016年网箱拆除后,各项指标均达到标准限值。Based on the monthly water quality monitoring data from 2013 to 2017,this study analyzed water quality and nutritional status of Er’tan reservoir and discussed the evolution trend of water quality and eutrophication,and the main influencingfactors.The results showed that water temperature,pH value,dissolve oxygen,total phosphorus,total nitrogen,ammonia nitrogen,diaphaneity,BOD,and chlorophyll-a all had significant annual changes in the past 5 years in Er’tan Reservoir.Comprehensive nutritional status index showed that the trophic status of the reservoir changed gradually from mesotrophic to oligotrophic.The correlation analysis suggested that there is a correlation between different water quality indicators,the water quality flow out of the reservoir was better than that flow into the reservoir.The water quality of Er’tan Reservoir was improved gradually in the past 5 years,especially after the fish cages were demolished,each water quality index can meet corresponding standard.

关 键 词：水库 营养状态 水质变化 

分 类 号：X524[环境科学与工程—环境工程]