Water conservancy construction and the change of land use make the protection of Daqinghe downstream wetland facing a severe situation.
水利工程的修建和土地利用方式的改变使大清河下游湿地保护面临严峻的形势。
Water conservancy construction and the change of land use make the protection of Daqinghe downstream wetland facing a severe situation.
水利工程的修建和土地利用方式的改变使大清河下游湿地保护面临严峻的形势。
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