摘要
网箱养殖欧洲鳗使养殖区及其周围水体中COD、总氮、总磷等污染物浓度明显升高,尤其大肠杆菌指标不能满足渔业水质标准,富营养化状态已达中营养化水平。网箱养鳗过程输入氮的61.0% ,磷的77.4% 都积留于库内,造成局部水域氮磷负荷已明显高于可接受负荷,磷负荷甚至接近危险负荷。
The concentration of pollutants such as chemical demand oxidation,total nitrogen,total phosphor,and so on significantly rises in and around the area of cage aquaculture,especially,E.Coli index may not meet the demand for GB11607 89.The trophic level in the area of cage qauaculture was in the mesotrophic status,while the trophic level around the area of cage aquaculture was in the transition state from oligotrophic to mesotrophic status.Eutrophication process has been significantly accelerated in and around the area of cage aquaculture.61.0 percent of input of nitrogen and 77.4 percent of input of phosphor from cage aquaculture have been accumulated in the reservoir,and this has caused loads of nitrogen and phosphor in partial water body having been significantly more than their acceptable loads,load of phosphor has been near to its advantageous load.
出处
《重庆环境科学》
1999年第6期36-38,共3页
Chongqing Environmental Science
基金
广东省科委"九五"星火前期项目
关键词
水库
水质
网箱养殖
富营养化
鳗鱼
Xinfengjiang Reservoir,Water Quality,Cage Aquaculture,Eutrophication.