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杞麓湖:“以渔净水”修复生态

2017-08-09 09:22:57   中国青年网

2011年10月,通海县通过招商引资引进云南亚美湖泊水质治理有限公司,开始实施杞麓湖“以渔净水”生物治理水质项目。至今,该公司投资3000多万元,放流大量的花鲢、白鲢,通过科学管理,利用鲢、鳙鱼滤食藻类的习性,有效地把水体中的藻类转变为鱼蛋白,在抑制蓝藻爆发、改善水质方面取得了明显效果。以每年捕捞鲢鱼、鳙鱼2400吨计算,可带出水中的N58.5~83.8吨、P7.2~21.5吨;消减水中富营养元素,在改善水质、促进水域生态良性循环的同时,产生鱼类产值2600万元,形成了一套湖泊鱼类人工放流,生态、经济、社会效益共赢的集成技术和管理措施。

杞麓湖保护治理是一项专业性和综合性极强的系统工程,包括环湖截污、河道整治、污水处理、生态修复等工程措施,其中“以渔净水”生态修复工程是杞麓湖生态环境恢复的重要措施之一,为杞麓湖治理发挥着巨大的作用。亚美在实施“以渔净水”的前期及后期管理过程中,积极协助有关职能部门,清除地笼6万多个、丝网5万多张、偷鱼工具1000多个,协助抓获非法捕捞人员500余人,对保护杞麓湖起到了积极作用。

随着 “以渔净水”对保护杞麓湖成效的不断显现,亚美积累了许多宝贵的经验和做法,省内外不少湖泊管理部门纷纷前来学习考察,交流探讨生物治污的新办法和管理经验。

去年,农业部出台《关于加快推进渔业转方式调结构的指导意见》中,明确提出“全面推进以渔净水”,大力推广以鱼控草、以鱼控藻等净水模式,在湖泊水库、城市景观水系等公共水域,因地制宜开展以滤食性鱼类为主的“放鱼养水”活动,促进以渔净水,改善水域水质和环境,发展生态渔业、休闲渔业,促进生态旅游、休闲旅游的融合发展。

云南亚美湖泊水质治理有限公司总经理褚荣波介绍,经过近6年对杞麓湖水质治理的经验总结,越来越有信心保护和治理好杞麓湖。他表示,在九大高原湖泊中目前只有杞麓湖实施该项目,希望推广到更多湖泊、水库,让“以鱼控藻、以渔净水”在发展生态渔业的同时,为生态环境和湖泊的保护治理发挥更大作用。

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