It is a kind of fragile ecosystem that is very difficult to restore once it is extinct and eventually turns into mobilesand.
这种生态系统非常脆弱，一旦消失很难再恢复，最终变成流沙。
2
A moderate clumping of mobilesand sites where vegetation covers were less than 20% were discovered using lacunarity analysis.
对植被盖度低于20％的流沙斑点或斑块沿样线分布的空隙度分析表明流沙斑点或斑块呈适度聚集的格局。
3
Soil moisture of sand grassland, semi-mobilesand and disturbed inter-dune bottomland, had distinctive variability and larger spatial change range of variability, after rainfall.