央视网消息：眼下，我国“三北”工程建设正持续推进。位于内蒙古巴彦淖尔乌拉特后旗的巴音温都尔沙区，曾经大风肆虐、流沙步步紧逼黄河“几字弯”。当地持续攻坚，区域沙化土地治理率大幅提升。眼下，沙区锁边工程正在进行。
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