title: [Quantitative classification and ordination of subalpine meadow in Wolong Nature Reserve].
abstract: Based on the field investigation of 114 sampling plots at Balong Mountain in Wolong Nature Reserve, this paper studied the plant species composition and community structure of subalpine meadow communities. Two-way indicator species analysis and detrended correspondence analysis were employed to classify and ordinate the subalpine meadow communities in these sampling plots, aimed to understand the key factors determining the structure and distribution pattern of subalpine meadow communities. Through TWINSPAN analysis, the subalpine meadow was classified into 12 types. DCA ordination gave the ecological significance of ordination axes. Axis 1 indicated the altitude the meadow distributed, while axis 2 indicated the soil humidity of the distribution site. The ordination of dominant species was similar to the classification of community types, reflecting the change trend of community type and species distribution with changing environmental factors.
authors.affiliation: Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing. say74@163.com
authors.forename: Aiyun
authors.initials: A
authors.lastname: Song
authors.forename: Shirong
authors.initials: S
authors.lastname: Liu
authors.forename: Zuomin
authors.initials: Z
authors.lastname: Shi
authors.forename: Linshui
authors.initials: L
authors.lastname: Dong
mesh_terms: D018533:Biomass; D002681:China; D003247:Conservation of Natural Resources; D017753:Ecosystem; D004784:Environmental Monitoring; D006109:Poaceae / Q000145:classification / Q000254:growth & development*