湖北四湖流域水环境现状分析研究

四湖流域是中国典型的湿地农业区域,其水环境恶化已影响到当地群众的生产生活。在四湖流域水污染源调查的基础上,对水环境质量现状进行了分析,结果表明:两大湖泊长湖和洪湖因围网养鱼和投入大量的饲料和农药已受到污染,水质Ⅲ到Ⅳ类,甚至Ⅴ类;内河水系普遍为Ⅳ、Ⅴ类水;农业面源污染的监控与防治是四湖流域水环境保护的重点。根据区域水环境现状分析,显见加强四湖流域水环境监测体系建设十分重要,整合区域内环境监测力量,从属地监测向流域监测、区域监测发展。

Analysis on Current Situation of Water Environment in Four-Lake Basin of Hubei Province

Four - Lake basin is a typical agricultural wetland area of China. Its water environmental deterioration has influenced the local production and people＇s living. Based on the survey of water pollution sources and water environment quality, the results showed that Chang Lake and Hong Lake are polluted with water quality level degrading to third to fourth, even fifth grade, which mainly due to excessive fish - farming, which setting up fences in the lakes and put in a lot of fodders and chemical fertilizer. The freshwater systems have a bad water quality which generally ranges between forth to fifth grade. Monitoring and control of agricultural non - point source pollution is the key of Four - Lake basin water environment protection. In the light of analyzing the regional water environment, obviously, it is important to establish water environment monitoring system in the Four - lake basin. The environmental monitoring should establish the concept of extending the monitoring targets from local to comprehensive monitoring on upper and lower streams of the whole watershed.