Research on the Diversity and Spatial Distribution Pattern of Rare Tree Species in Green Spaces in Changchun City
A total of 924 plots were set up using stratified sampling method to investigate and analyze the composition,diversity,spatial distri-bution characteristics,tree dimensions and health status of rare tree species.The results showed that there were a total of 16 361 rare tree spe-cies belonging to 11 families,14 genera,18 species in various green spaces in Changchun City.Picea koraiensis had an important value of 15.2％,accounting for a significant advantage,followed by Fraxinus mandshurica,Abies holophylla,Hemiptela davidii and Phellodendron amurense.Their important values were 13.90％,13.33％,11.81％and 9.94％,respectively.The construction time and land use nature of green spaces are important factors affecting the richness and diversity of rare tree species.The park green space has the most abundant rare tree spe-cies,with a total of 16 species and 11 154 plants,accounting for 88.89％and 68.71％of the total,respectively.The second is the affiliated green space,which has 14 species and 4 873 plants,accounting for 77.78％and 29.78％of the total,respectively.Chaoyang District has the most abundant rare tree species,with a total of 15 species and 9 472 plants,accounting for 83.33％and 57.89％of the total,followed by Changchun New Area,with a total of 14 species and 2 445 plants,accounting for 77.78％and 14.94％of the total,respectively.
Green spaceRare tree speciesDiversitySpatial distributionChangchun City
万方数据
维普
