2000年前(qián )后,受自然因素与人(rén )类活动(dòng )影(yǐng )响,察汗淖尔湿地功能(néng )下降,风沙(shā )危害多发(fā ),生物多样性受损。2017年以(yǐ )来,湖泊(bó )的湖底全(quán )部裸露(lù )出(chū )来,只在夏季雨水(shuǐ )频(pín )繁时(shí ),可(kě )以形(xíng )成小范(fàn )围水面(miàn )。如(rú )若赶(gǎn )上(shàng )大旱年头,距(jù )离(lí )北(běi )京直线(xiàn )距离(lí )240公(gōng )里的察汗淖尔一“翻(fān )脸”,滚(gǔn )滚沙尘(chén )则遮天蔽日(rì )过(guò )京津。
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