洪泽湖主要水生植物群落水环境效益研究

洪泽湖湿地为我国典型的湖泊湿地，有着丰富的水生植物资源，这些水生植物群落在生长过程中与洪泽湖水体相互作用相互影响。由于自身生长习性的不同，对水体产生了不同的水环境效益。此次选取了洪泽湖主要水生植物群落，并对这些群落的总氮、总磷、化学需氧量等指标进行检验。采用因子分析统计手段和综合营养状态指数法对各群落水体的水质状况加以分析，从而发现了不同水生植物群落不同的水环境效益，其中菹草群落与芦苇群落的水环境效益较好，而水葱群落与水花生群落的水环境效益较差。

Study on Water Environmental Benefit of Main Hydrophyte Communities in Hongze River

Hongze wetland is typical lake wetland of our country,which has abundant hydrophytes resource.These hy-drophytes had effect on the water of Hongze river reciprocally to give different water environmental benefit when they lived,because of their different growth behaviors.In the paper,the main hydrophyte communities in Hongze river were chosen to test TN,TP,COD and other index.Factor analysis and the trophic status index evaluation method were used to study the water quality status of every community.In the end the different environmental benefits of different hydrophyte communities were found,in which the curly pondweed community and reed community had better water environmental benefits,but the black rush community and alligator weed community had the worse water environmental benefits.