摘要
研究三种漂浮植物对水体的净化效果,对生长有凤眼莲、浮萍及槐叶萍的静止水体进行长期监测,结果表明:漂浮植物对改善水体透明度意义不大;植物在生长过程中,一旦盖度达到100%,对水质无明显改善水质作用,其中水体DO含量降低,水体TN、TP、IMn等主要水质指标较对照水体有所上升;因此,静态富营养化水体在生态修复过程中,使用漂浮植物作为净化物种时,应根据物种要严格控制其盖度,可选择地通过人工打捞的方式,从水体中取走植株固定的氮磷等元素,达到脱氮、除磷,控制水体富营养化的目的。
The purification effect is studied in water about three floating plants,the still water growing in Eichhornia crassipes,duckweed and Salvinia natans are monitored.It shows that the floating plants have no important role in improving the transparency,once the plants coverage reaches 100%in the growth process,dissolved oxygen content decreases.The total nitrogen content,total phosphorus content and permanganate index in water increases in the control water,so the floating plants have no significant improvement on water quality.Therefore,the floating plants are chosen as purifying water in the ecological restoration process,their coverage should be strictly controlled in static water,the plants can be harvested selectively,the nitrogen and phosphorus elements can be removed from water,and eutrophication is controlled.
出处
《中国农村水利水电》
北大核心
2015年第3期54-58,63,共6页
China Rural Water and Hydropower
基金
国家自然科学基金(41105113)
国家自然科学基金(51109109)
江苏省环境演变与生态建设重点实验室开放基金资助项目
江苏高校优势学科建设工程资助项目
关键词
漂浮植物
盖度
静止水体
透明度
水质
floating plant
coverage
still water
transparency
water quality
作者简介
作者简介：王锦旗（1976-），男，博士，讲师。E-mail：w_j_q@sina．com。
