摘要
在富营养化水库——云龙湖水库中建立小型围隔区,对4种沉水植物及组合进行了净化水质的现场试验研究。沉水植物恢复后,能够有效提高水体的透明度,改善水体的溶解氧状况,对水体中的TN和CODCr、BOD5有明显的去除作用。在受试的沉水植物中,狐尾藻对水体透明度的改善效果最好,金鱼藻对水体的增氧效果最好,苦草对总氮的吸收作用最明显,狐尾藻去磷效果最好,狐尾藻和金鱼藻对有机质的去除效果较好,且不同种类组合具有一定的协同作用。
Scene experimental studies were carried out on water quality purification efficiency of four kinds of Submerged plants and their compounding in minitype enclosures of an eutrophic lake, Yunlonghu Reservoir, JiangShu Province. The results show that the transparencies in the enclosures with the recovery of macrophytes are efficiently enhanced compared with the controled enclosure without macrophytes and the reservoir water, the status of DO is improved while TN,CODcr and BOD5 are obviously wiped off. Among several experimented submerged plants, Myriophyllum spicatum L. has the best effect of improving the transparency, Ceratophyllum demersum L. has the best effect of increasing DO, Vallisneria spiralis L. has the most efficient effect of absorbing TN, Myriophyllum spicaturn L. has the best effect of decreasing TP, Myriophyllum spicatum L. and Ceratophyllum demersum L. has the better effect of decreasing the organical substance. The effect of compoundings of several kinds of Submerged plants can accelerate one and another to a certain extent.
出处
《水生态学杂志》
北大核心
2008年第6期17-21,共5页
Journal of Hydroecology
基金
水利部科技创新项目(Scx2003-20)资助
关键词
云龙湖水库
沉水植物
水质净化
原位
围隔
Yunlonghu Reservoir
Submerged plants
water quality purification
in situ
enclosure
