The Diversity And Distribution Characteristics Of Shrub Vegetation At The Source Of Qinhe River

Shrub is an important part of terrestrial ecosystem,which plays an important role in ecosystem restoration,soil and water conservation and ecological balance maintenance.Global warming and anthropogenic disturbance will continue to affect the distribution range and species composition of shrub,thus affecting community productivity and biodiversity.Therefore,it is of great significance to clarify the distribution law of shrub and the characteristics of species formation to guide vegetation restoration and species diversity conservation.This paper describes the main types and composition of shrub vegetation in qinhe river headwaters area,and expounds the diversity and distribution of shrub vegetation in qinyuan county.The results are as follows :(1)Rosa xanthina is the most widely distributed shrub species in the study area,with strong adaptability.(2)by comparing several main shrub types in the study area,it was found that the richness index,shannon-wiener index,Simpson index and Pielou index of Sophora davidii shrub were significantly lower than those of other shrub types,while the species richness(S),diversity index(H '),dominance index(D)and evenness index(J)of yellow-rose shrub were the highest.There was no significant difference in other shrub types.(3)there was no significant difference in the overall distribution of shrub vegetation types in the study area,but the shrub community types had different characteristics in the horizontal and vertical distribution.Finally,this paper describes the water conservation function of vegetation in qinyuan county based on the available data,and discusses how to use and protect the shrub.