Study on cliff plant diversity based on road buffer zone analysis
The Wulingyuan district features unique cliff topography in Zhangjiajie.Plants in this area exhibit resistance to barren conditions and stress,playing a crucial role in maintaining ecosystem stability.This study aimed to investigate the influence of road on cliff plant diversity.Close-up images of cliff plants were obtained using drones,and road elements in remote sensing images were extracted using ArcGIS 10.7 software.Buffer zones with different distance gradients were then established based on road distribution,and the alpha diversity index was used to assess plant diversity.Plant species distribution was analyzed across different buffer zones,and the relationship between various indices was examined.The results indicated that:(1)The study area comprised 276 sampled species in 54 families and 142 genera,the dominant species was Que rcus glauca,Pinus massoniana,and Rhododendron simsii,accounting for 13.37％,11.18％and 9.52％of the total samples,respectively.Shrubs were the most dominant plant type,making up 56.65％of the vegetation.(2)Theα diversity,evenness,and richness of plant communities in the buffer zones were highest for shrubs,followed by trees,lianas,and herbs in order,and roads had a greater impact on tree species.(3)There was a highly significant negative correlation between the Shannon diversity index(J')of shrubs and the Pielou evenness index(J')of trees,as well as between the Shannon diversity index(H')of trees and the Pielou evenness index(J')of shrubs.The Margalef richness index(DMG)of lianas showed a highly significant positive correlation with the Margalef richness index(DMG)of shrubs and trees(P＜0.01),indicating different competitive and symbiotic relationships among plant types in the community.Overall,the research demonstrated that road buffer zones significantly influenced cliff plant diversity,offering valuable insights for the conservation and management of these plant resources.
UAV remote sensingcliff plantplant diversityroad buffer zoneWulingyuan District
NETL
NSTL
万方数据
