戴上“绿围脖” 锁住塔克拉玛干沙漠
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| MP4 | N/A | mp4a.40.2 | Download |
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我国最大的沙漠塔克拉玛干沙漠，环绕一圈有3046公里。过去40多年，依托“三北”工程，塔克拉玛干沙漠周边已经形成了长达2761公里的由森林、草地、湿地构成的绿色阻沙防护带，沙漠边缘无林草湿地空白区长度只剩约285公里。 目前，这最后的285公里“锁边”工程进展如何？
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