近日,网友发现黄河壶口瀑布处,黄河水一改昔日浑浊泥沙色,变得清澈。有网友称黄河清是“干旱前兆”,工作人员称并无这一说法,河水变清是天气变化自然形成的,春天雨水较少,上游来的河水携带泥沙较少。除了天气原因,黄河水变清还要归功于河流两岸绿化做得很好。
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