Abstract: Abstract: The ecological environment in coal mine goaf subsidence regions in semi-arid sand environment has been seriously damaged and it's relatively hard to recover the vegetation. In this thesis, what is investigated is the telluric vegetation in coal mining subsidence regions within the range of Mu Us Desert by utilizing vegetation quadrat investigation method and artificial cultivation test. It also conducts comparison and analysis over the recovery process of vegetation using phytocoenosium theory to further evaluate and discuss the positive effects of manual intervention on the recovery of local vegetation. The result is: both natural recovery of vegetation and manual intervention can realize very high vegetation cover degree in a short time, but the structure of phytocoenosium differs a lot from its stability. Suitably providing positive manual intervention is beneficial to the recovery of vegetation environment in this kind of regions and reasonable phytocoenosium structure configuration can be shortened mine ecological restoration.

Key words: Keywords: Vegetation Restoration, Plant Community, Mining Subsidence Area, Semiarid Area, Vegetation Succession