水力发电学报2017，Vol.36Issue(10)：93-101,9.DOI:10.11660/slfdxb.20171010
TDG过饱和高含沙水体对岩原鲤的急性效应研究
Acute effects of TDG supersaturated water with high concentration sediment on rock carp (Procypris rabaudi)
摘要
Abstract
Excessive suspended sediment and high level supersaturation of total dissolved gas (TDG)often exist in the downstream water of a dam that is releasing flood.This threatens the survival of fish inhabiting in the water and is becoming an increasingly prominent eco-environmental issue that attracts more attention.This study conducts an acute exposure experiment and has investigated the combined effect of TDG supersaturation and sediment on rock carp (Procypris rabaudi).One-year-old rock carps and sediment with median diameter of 7 μm are tested,and sediment concentrations of 0,200,600,800 and 1000 mg/L are used for each of the supersaturation levels of 125％,130％,135％ and 140％.Results show that higher TDG supersaturation and sediment concentration leads to a shorter median lethal time of the rock carps exposed to the water.Sediment accelerates the death of rock carps in TDG supersaturated water,but supersaturated TDG plays the major role.We have observed that sediment alone did not result in the death of rock carps in all the treat groups (200-1000 mg/L) in the condition of TDG supersaturation level of 100％.关键词
TDG过饱和/泥沙/岩原鲤/半致死时间/半致死浓度Key words
TDG supersaturation/sediment/rock carp (Procypris rabaudi)/median lethal time/median lethal concentration分类
资源环境引用本文复制引用
刘晓庆,王俊杰,孙井沛,王远铭,施浩然..TDG过饱和高含沙水体对岩原鲤的急性效应研究[J].水力发电学报,2017,36(10):93-101,9.基金项目
国家自然科学基金(51509213 （）
51409224) （）
流体及动力机械教育部重点实验室学术培育项目(SBZDPY-11-10) （SBZDPY-11-10）
