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降水偏多致中国黑海面积创近52年来最大值

2017-11-04 15:22  来源:中国新闻网

  中新社西宁11月4日电 (孙睿 赵海梅)“据青海省气象科研所最新遥感监测分析,中国黑海面积今年显著扩大,已达近52年来的最大值,增长面积相当于4个西湖的面积?!鼻嗪J∑罂蒲а芯克呒豆こ淌α醣?日表示。

  哈拉湖,又名黑海,在中国和欧亚都有同名的海域。欧亚黑海是欧亚大陆的一个内海,面积约42.4万平方公里。而中国黑海,又名哈拉湖、瑶池(即古代传说中西王母的住处),为昆仑河(格尔木河)的源头。该湖是青藏高原上内陆流域一个大型咸水湖,面积约602平方公里,最大深度65米,容量160亿立方米。位于海西蒙古族藏族自治州格尔木东北300公里,海拔4078米,流域面积近4800平方公里,四周多雪山冰川。

  中国黑海是深藏在祁连山腹地的一块尚未被开发的“处女地”。近年来,随着青藏高原旅游探险活动的开展,逐渐进入人们的视线。哈拉湖湖面近似圆形,由发源于高峰达5600米山区河流供水,而河流以冰川融水补给为主。

  刘宝康介绍,遥感监测结果显示,哈拉湖水体面积为625.06平方公里,与去年同期相比,面积扩大了14.43平方公里,与过去13年同期相比,面积扩大了18.59平方公里,与1966年相比,扩大了27.66平方公里,扩大面积相当于4个西湖的面积。

  “根据气象数据分析,2017年6月至9月期间,哈拉湖周边月降水较历年同期平均偏多2成到1.9倍,降水偏多是今年哈拉湖面积显著偏大的主要原因?!绷醣邓?,湖泊面积增大有利于周边大气湿润度的增加,同时也有利于周边野生动植物和鸟类栖息环境的改善。

  据了解,哈拉湖是祁连山腹地水草丰美的一块地方,主要为高原草甸植被,是湿地雁鸭类、鹬类和鸥类等鸟类的重要繁殖地,湖中有大量中国二级?;ざ锫憷鹬秩荷?。(完)

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