Effects of Disturbance on Plants,Soils,and Microorganisms in Subalpine Meadows and Frost Mounds
As a typical distribution area of subalpine meadows and frost mounds in North China,Luya Mountain is being subjected to significant degradation pressure due to the combined effects of multiple disturbances.The objective of this study was to investigate the differences in plant,soil,and microbial communities and their responses to the disturbance in the frost mounds and meadows of Luya Mount.The results demonstrated that there were no significant differences between intact frost mounds and healthy meadows in terms of plants,soils and microorganisms.Furthermore,they exhibited similar patterns of change after damage,with a notable reduction in the aboveground biomass and species richness of plants(P<0.05),significant changes in soil water content,bulk density and pH(P<0.05).Additionally,bacterial community structure and diversity were altered,and only the community structure of fungi was affected.However,the higher soil water content of frost mounds can,to some extent,mitigate the effects of disturbance on plant functional groups and biomass.Soil physicochemical properties had a significant effect(P<0.05)on plant community characteristics and soil bacte-rial community characteristics.Conversely,no significant impact was observed on the soil fungal communities.In conclusion,it is imperative that prompt measures be taken to enhance the plant communities and soil struc-ture of subalpine meadows and frost mounds,thereby facilitating their ecological restoration and adaptive man-agement.
Subalpine meadowFrost moundFunctional groupsAboveground biomassSoil physical and chemical propertiesSoil microorganism
万方数据
维普
