粤东地区大型水库叶绿素a浓度的影响因素分析  

Analysis on the Influencing Factors of Chlorophyll-a Concentration in Large Reservoirs in Eastern Guangdong

作　　者：黄丰明 HUANG Fengming(Shantou Substation of Guangdong Provincial Hydrographic Bureau,Shantou 515041,China)

机构地区：[1]广东省水文局汕头水文分局,广东汕头515041

出　　处：《广东水利水电》2022年第8期60-64,共5页Guangdong Water Resources and Hydropower

摘　　要：叶绿素a浓度是反映水体中浮游植物现存量的最直接指标,该文利用2020年的水质监测数据,对粤东地区6座大型水库水体中叶绿素a浓度的影响因素进行多元回归分析。结果显示,水体中的叶绿素a浓度只与总磷浓度显著相关(P<0.05),这表明粤东地区6座大型水库水体中浮游植物的生长繁殖主要受磷限制,因此控制水库流域内磷的输入是防治水体富营养化的关键。Chlorophyll a concentration is the most direct index to reflect the phytoplankton standing crop in water.Based on the monitoring data in 2020,the multiple regression analysis was used to find out the influencing factors of chlorophyll-a concentration in six large reservoirs in eastern Guangdong.The results showed that the concentration of chlorophyll a was only significantly correlated with the concentration of total phosphorus(P<0.05),which showed that the reproduction of phytoplankton in six large reservoirs in eastern Guangdong were mainly limited by phosphorus concentration.Therefore,controlling the input of phosphorus is the key of eutrophication prevention.

关 键 词：粤东地区 大型水库 叶绿素A 影响因素 富营养化防治 

分 类 号：X824[环境科学与工程—环境工程]