Advance in shrub encroachment in arid and semiarid region Effects of shrub (Caragana microphalla Lam.) encroachment on water redistribution and utilization in the typical steppe of Inner Mongolia Relationship and response of shrub patches to precipitation using the entropy model in arid and semiarid regions of China Effects of shrub encroachment on biomass and biodiversity in the typical steppe of Inner Mongolia Relationships between ground beetle community distribution and microhabitats in an arid desert shrubland of the middle Heihe River basin