摘要
[目的]研究几种植物混种对富营养化水体的净化效果。[方法]以小瓜子、缎带椒、中柳、皇冠和西瓜草5种植物为试材,以北京市延庆县妫水湖8月份富营养化程度最高的湖水为植物生长基质,设高、中、低3个投放密度试验组,研究植物投放密度对富营养化湖水的修复效率影响;通过测定水样中总磷酸盐(TP)、总氮(TN)、氨氮和硝态氮的浓度变化,确定植物修复的最佳效率。[结果]所有植物试验组对富营养化水中氨氮的净化效果均比较显著。3个试验组中,以投放低密度试验组对氨氮吸收的处理效果比较好,对硝氮吸收的处理效果较为明显;投放中密度试验组对于总氮和磷酸盐吸收的处理效果较为明显。[结论]适当控制植物的投放密度有利于去除富营养化物质。
[ Objective ] The purpose was to research the purifying efficiency of mixed planting of some plants on the eutrophic lake water. [ Method ] With 5 plants including Lindernia rotundifolia, Cryptocoryne crispatula, Hygrophila stricta, Microrium sp. and Peperomia sandersii as the tested materials and the highest eutrophic lake water from Guishui Lake in Yanqing County in Beijing City as the matrix of plant growth, 3 test groups with high, middle and low input density were set up to study the effect of input density of aquatic plants on the purifying efficiency of the eutrophic lake water. [ Result] All the plant test groups had significant purifying efficiency on the ammonia nitrogen in the eutrophic lake water. Among 3 test groups, the test group with low input density got better removal effect on the ammonia nitrogen as well as on the nitrate nitrogen and the test group with middle input density got remarkable removal effect on the total nitrogen and phosphate. [ Conclusion ] The input density of aquatic plant that was properly controlled could be useful to the removal of the eutrophic matter.
出处
《安徽农业科学》
CAS
北大核心
2009年第23期11124-11126,共3页
Journal of Anhui Agricultural Sciences
基金
北京市教委共建项目资助
关键词
水生植物
富营养化
投放密度
修复效率
Aquatic plants
Eutrophication
Input density
Remediation efficiency
