From the Qing dynasty to now, with the increase of population, overgrazing, cultivating and excavating became more and more seri-ous, so environment has deteriorated further.

• 从清代开始我国人口开始膨胀，从外地迁往该地的人口较多，新中国成立以来，人口迅速增长，繁重的人口承载加重了该地区的垦殖、过牧和樵采，进而促进了该区的沙化。