香蒲植物净化塘生态系统调查研究

Investigations on Cattail Plant Purification Pond Ecosystem.

韶夫江口铅锌矿废水不仅排放量大,而且重金属含量高,成份复杂,对水体污染严重。废水总排放量达61O78t·日^(-1),其入河口铅的浓度超过地面水卫生标准约11倍。几年来。

The species composition,biomass and microenvironmental characters of cattail population aredetermined.The roles of this population in filtering and adsorbing sand deposition,absor-bing and accumulating heavy metals and providing and maintaining better environment foraquatic higher plants,algae and fishes are discussed,the species and amount of algae andfish and their heavy metal contents are measured,and the ecological sequences of aquatic or-ganisms in purification pond are summarized.The key for improving the purification effectsis to increase the biomass of cattail plants by means of rational close planting.