Objective:Shrub encroachment is the main environmental problem in grassland regions all over the world.It determines the growth and survival of the plant in grassland.It has great scientific significance for grassland vegetation protection and restoration to clarify the influence of scrub on grassland soil moisture.Methods:The effects of grassland shrub on eco-hydrological processes were reviewed from five aspects:rainfall intercept,evapotranspiration characteristics,water infiltration,water utilization and overall water dynamics.Results:The soil water distribution in shrub encroach-ment grassland was not only affected by its own volume weight and porosity,but also indirectly affect-ed by shrub type,size,litter,root distribution and external environment.Conclusion:In the future,relevant studies should be combined with advanced technologies such as aerial photography and remote sensing images to properly extend the test period of hydrological change process after grassland shru-bland.The water competition and sharing mechanism between deep-rooted and shallow-rooted vegeta-tion species should be further explored to clarify the hydrological threshold and water dynamic balance of grassland ecosystems.
NETL
NSTL
万方数据
