摘要
2011—2014年对汤溪水库进行采样监测,测定水体理化特征、浮游植物种类、丰度等指标,采用营养状态指数(EI)和Shannon-Wiener多样性指数法对水质污染现状进行评价,分析浮游植物分布特征。结果表明,汤溪水库营养化程度较高,已接近富营养;浮游植物以蓝藻、绿藻、硅藻为主,3者丰度之和占总丰度的95%以上;发生蓝藻水华的危险较大。水库主要为氮、磷污染,污染源主要是上游近30万人口的生产生活废污水,以及大量种植桉树带来的污染。
Physico- chemical data,phytoplankton species and densities are determined from 2011 to 2014 in Tangxi Reservoir.The status of water pollution is evaluated based on Eutrophication index,Shannon- Wiener index,and analysis characteristics of phytoplankton distribution. The results show that the eutrophication degree of Tangxi Reservoir is in high level,close to rich nutrition. The total number of cyanobacteria,green algae,Diatoms accounted for 95% of hytoplankton. The risk of cyanobacterial blooms is great. Nitrogen and phosphorus are the main pollutant indices. The main pollution sources is from nearly 300000 people living in the upstream and the pollution from planting eucalyptus.
出处
《广东水利水电》
2015年第8期48-52,共5页
Guangdong Water Resources and Hydropower
关键词
汤溪水库
富营养化
浮游植物
Tangxi Reservoir
eutrophication
phytoplankton
