洪湖水环境特征与湖泊湿地净化能力研究

Analysis of Water Environment Characteristics and Purification Ability of Honghu Lake Wetland in Jianghan Plain

通过对洪湖湿地水环境的监测调查 ,分析了洪湖水环境质量状况 ,结果表明 :洪湖湖水除化学耗氧量和总磷略为超标 ,总体上达到地面水二类标准 ,保持着良好的水质 .洪湖水生植物在生长过程中能够不断地吸附、吸收、分解水中的营养盐和污染物 ,大量水生植物对水体产生净化作用 .湖水溶解氧较丰富 ,平均为 7.40 3mg/L ;洪湖水体氮、磷含量都比较低 .洪湖小港出水口水质浓度一般比进水口子贝渊水质浓度要低 ,特别是NH+4 —N ,NO-2 —N ,PO3-4 ,TP等指标 ,其浓度的减少率一般在 10 %～ 5 0

Based on the monitoring data of water quality in Honghu Lake wetland, this paper analyzed the current situation of water environment in Honghu Lake. The research results indicated that the water quality of Honghu Lake keep in good state according to the criterion of grade of surface water. Owing to the frequent water exchange and growing hydrophytes, these provide the good condition of increasing the capacity of water dilution and purification and digesting the pollutant.