摘要
1996年对长春南湖的富营养化实施了生态治理工程 .调查结果表明 ,通过收获水生高等植物和鱼产品带出湖体的P量分别为 14 9.6和 189.9kg ,通过蚌体生长固定的P量为 15 3.4kg ,三者合计 492 .9kg ,与湖体全年P输入量大体持平 .生态工程运转后 ,水质明显好转 ,湖水中的总P浓度逐年下降 ,浮游植物个体密度减小、种类数增加 .生态工程是城市湖泊富营养化治理较为理想的方法 .
An ecological engineering was conducted for eutrophication control in the Nanhu Lake of Changchun.In 1996,the removal of phosphorus by harvesting aquatic macrophytes and fishes was 149.6kg and 189.9kg,respectively,and the phosphorus fixed in molluscs was 153.4kg.The total output was 492.9kg,which amounted approximately to the annual phosphorus input of the lake.After ecological engineering,the water quality turned better,the TP concentration in lake water decreased,the phytoplankton density reduced,and the number of phytoplankton species increased.The roles of molluscs and fish in controlling lake eutrophication should be further studied.Ecological engineering is an ideal method to control the eutrophication of urban lakes.
出处
《应用生态学报》
CAS
CSCD
2001年第4期590-592,共3页
Chinese Journal of Applied Ecology
基金
国家"973"重点基础研究发展规划项目 (G2 0 0 0 0 1 860 6)
国家自然科学基金 (3930 0 0 2 3)
吉林省自然科学基金资助项目 (0 91 0 30 6)
关键词
生态工程
磷
湖泊
富营养化
Ecological engineering, Phosphorus, Lake, Eutrophication.
