东洞庭湖水体叶绿素a动态及相关环境因子分析  

Dynamics of Chlorophyll-a and Analysis of Environmental Factor in East Dongting Lake

作　　者：庄琼华 王琦 欧伏平 ZHUANG Qionghua;WANG Qi;OU Fuping(Yueyang Eco-Environmental Monitoring Centre of Hunan Province,Yueyang 414000,China;Eco-Environmental Monitoring Central of Dongting Lake of Hunan Province,Yueyang 414000,China)

机构地区：[1]湖南省岳阳生态环境监测中心,湖南岳阳414000 [2]湖南省洞庭湖生态环境监测中心,湖南岳阳414000

出　　处：《湖南理工学院学报（自然科学版）》2022年第1期69-73,共5页Journal of Hunan Institute of Science and Technology(Natural Sciences)

基　　金：国务院三峡办项目“三峡工程生态与环境监测系统:洞庭湖江湖生态监测重点站”。

摘　　要：利用2016年1—12月水质监测数据,分析东洞庭湖叶绿素a浓度的时空动态变化及其与水温、pH、总氮、总磷等环境因子的相互关系.结果表明,东洞庭湖水体叶绿素a存在明显的时空动态变化,大小西湖叶绿素a浓度高于主湖体,主湖高于主洪道;6—7月、10月水体叶绿素a浓度明显高于其它月份;东洞庭湖叶绿素a与透明度呈极显著正相关,与总氮、硝酸盐氮、正磷酸盐呈极显著负相关,与水温、溶解氧、总磷等无显著相关.因此,透明度可能是影响藻类生长的关键因子.The spatial and temporal change of chlorophyll-a concentration and the relationship between chlorophyll-a,water temperature,pH,total nitrogen,total phosphorus and other environmental factors were analyzed using water quality monitoring data in 2016.The results show that it has obvious spatial and temporal change of chlorophyll-a in the East Dongting lake,chlorophyll-a concentration in the Daxiaoxi lake is higher than the main lake,and the main lake is higher than the main szanda;concentration of chlorophyll-a in June and July and October is significantly higher than the other months.The correlation analysis shows that chlorophyll-a in the East Dongting Lake has significant positive correlation with transparency,but significant negative correlation with the total nitrogen,nitrate nitrogen and orthophosphate,it has no significant correlation with water temperature,dissolved oxygen,and total phosphorus.Transparency is the key factor of algae growth.

关 键 词：东洞庭湖 叶绿素A 环境因子 相关分析 

分 类 号：X524[环境科学与工程—环境工程]