Bai Yang Dian Wet Land is the biggest freshwater lake in North-China and its eco-environment deteriotes seriously and the lake is drying up.

 
  • 摘要白洋淀湿地是华北地区最大的淡水湖泊,近年来,生态环境退化现象十分严重,面临着干淀的威胁。
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