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湖南水环境水质量总体持续好转

2018-11-26 10:31:01    新华网

新华社长沙11月26日电(记者史卫燕)记者从湖南省生态环境厅获悉,通过开展湘江保护与治理、洞庭湖水环境综合治理专项行动、饮用水源地整治等多项工作,近年来,湖南省水环境水质量总体持续好转。

湖南水系发达,境内湘江、资江、沅水、澧水四条河流汇入洞庭湖,最终流入长江。近年来,湖南以“一湖四水”为水治理主战场,以湘江保护和治理、洞庭湖水环境综合整治专项行动为载体推进全省水环境改善。

据介绍,近年来湖南将湘江保护与治理列为省“一号重点工程”,让湘江休养生息、减轻负担,系列措施使湘江干流水质总体转优,重金属浓度达标并大幅下降。2017年,湖南省控419个断面Ⅰ-Ⅲ类水质比例达90.2%,其中,湘江流域Ⅰ-Ⅲ类水质比例为94.7%,与2012年相比提高5.3个百分点。

近两年洞庭湖水环境质量有所改善。湖南通过实施洞庭湖生态环境专项整治三年行动计划,全面推进农业面源污染防治、城乡生活污染治理、采砂秩序整顿等十大重点任务和大通湖、华容河等九大片区集中整治。2017年,湖体总磷平均浓度为0.073mg/L,比2016年下降了13%,7个主要河流入湖口断面中,5个断面的总磷浓度呈下降趋势。洞庭湖自然保护区的非法采砂、养殖、捕捞等突出问题得到有效解决。

此外,截止到今年10月底,湖南完成了县级饮用水源共254个重点问题的整治。

据介绍,湖南将继续以“一湖四水”系统联治为重点,加强水源地保护,加大城市黑臭水体整治,着力解决水污染、水生态、水资源、水安全问题。

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