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我国最大淡水湖“喊渴” 最大沙漠淡水湖缩水7成

2016-10-12 08:46:03   每日经济新闻

现场图

通过对泄流能力的分析,他们揭示了采砂引起的湖口水道展宽下切导致的湖泊“泄流能力”倍增是鄱阳湖北部湖区水位异常与“超低枯水位”形成的主要原因。

最大沙漠淡水湖缩水7成

据粉巷财经(微信号:nbdfxcj)报道,国庆7天长假时,“中国最大沙漠淡水湖”红碱淖湖边人流如织,不过,所有离开的游客都带着有遗憾与担忧——这个牛掰的“沙漠神湖”有可能要干涸!

这不是危言耸听。近十多年来红碱淖水位骤降,PH值陡增,中国最大沙漠淡水湖变成了咸水湖。当然,红碱淖这样的处境不是一天两天了。

上世纪90年代前,红碱淖水域面积没发生过太大的变化。本世纪开始,红碱淖水域面积开始大幅萎缩。陕西省气象局农业遥感信息中心监测,2000年以来,红碱淖水量减少接近七成。

资料图

陕西最有名的这个湖泊简直成了一个漏斗!多幅照片可以作证:各个时期照片的对比,红碱淖就像一滩在烈日下的积水,不断被蒸发掉。

在此之前,湿地专家就警告:如不采取紧急措施,红碱淖未来几十年内很可能完全干涸,成为“第二个罗布泊”。想象一下,到时候中国最大的沙漠淡水湖从“大漠遗珠”变为“大漠遗憾”,留下一个硕大的伤疤。

红碱淖萎缩背后,还存在着地方利益纷争。

当年,陕西占尽红碱淖的红利,生态保护让位于煤炭开采,红碱淖水位大降;内蒙古则在红碱淖入水支流上打坝截流,为鄂尔多斯康巴什新区供水,各有各的小算盘。

最近,陕西方面准备挖一条沟渠,从鄂尔多斯引水到红碱淖。生态保护与区域经济发展往往相逆,新纷争与博弈又开始了……

责任编辑:郭丽颖 cn045
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