农业环境与发展Issue(4)：388-394,7.DOI:10.13254/j.jare.2014.0312
凤眼莲和水浮莲对滇池草海水体中氮去除效果的比较研究
Comparative Studies on Nitrogen Removal Between Eichhornia crassipes and Pistia stratiotes in Lake Dianchi Caohai, China
摘要
Abstract
In order to compare two different floating aquatic plants about the nitrogen removal effect of eutrophic water in Lake Dianchi Cao-hai, Eichhornia crassipes and Pistia stratiotes were employed to microcosm experiments. Results showed that Eichhornia crassipes and Pistia stratiotes had no obvious difference on the ability of nitrogen enrichment and the total nitrogen removal rate. Under the water total nitrogen (TN), dissolved total nitrogen(DTN), nitrate(NO3--N), ammonium(NH4+-N)initial concentration of 8.40, 7.20, 4.12, 2.59 mg·L-1, Eich-hornia crassipes and Pistia crassipes seedlings were 1 kg, the average total nitrogen(TN), dissolved total nitrogen(DTN), nitrate(NO3--N), ammonium(NH4+-N)removal rate of Eichhornia crassipes test group were 74.24%, 76.81%, 87.62%, 80.30%respectively;The average total nitrogen(TN), dissolved total nitrogen(DTN), nitrate(NO3--N), ammonium(NH4+-N)removal rate of Pistia crassipes test group were 70.10%, 78.89%, 94.77%, 87.64%respectively. The average assimilation away from total nitrogen in water nitrogen loss rate of Eichhornia crassipes and Pistia crassipes test group were 89.39%and 82.33%respectively. The average nitrogen content in the sediment of nitrogen in the water loss rate of Eichhornia crassipes, Pistia crassipes and control test group were 6.94%, 11.64%and 83.51%respectively. Eichhornia crassipes and Pistia crassipes could not only effectively inhibit the formation of sediment, but also could significantly decrease the DO and pH of the water. Although Eichhornia crassipes and Pistia stratiotes can significantly reduce the total nitrogen of water, considering the Pistia stratiotes plant is brittle, so large-scale Eichhornia crassipes planting is a feasible way to control eutrophication of lakes.关键词
凤眼莲/水浮莲/富营养化水体/去氮效果Key words
Eichhornia crassipes/Pistia stratiotes/eutrophic water/nitrogen removal effect分类
资源环境引用本文复制引用
闻学政,刘海琴,张迎颖,韩亚平,秦红杰,张志勇..凤眼莲和水浮莲对滇池草海水体中氮去除效果的比较研究[J].农业环境与发展,2015,(4):388-394,7.基金项目
国家“十二五”滇池水专项“滇池水体内负荷控制与水质综合改善技术研究及工程示范课题” （）
