Quantitative classification and ranking of plant communities in Ailao Mountain
In order to determine the major environmental factors affecting plant community distribution in Ailao Mountain,two-way indicator species analysis(TWINSPAN)and canonical correspondence analysis(CCA)were used to quantitatively classify and sequence the ecological relationships between 45 communities and environmental factors in study area.The results showed that,170 species from 45 quadrats were divided into 7 clusters by TWINSPAN classification.Cluster Ⅲ had the most abundant species diversity,while cluster Ⅴ had the most unitary species diversity,including only 18 species from plots 11 and 20.The results of CCA sequencing showed that,elevation was the main factor affecting the distribution of plant community in Ailao Mountain,followed by porosity and temperature.Soil organic matter and soil total phosphorus had no significant effect on the distribution of plant community.The analysis of the change of plant community quantity classification in Ailao Mountain is of great significance for revealing the spatial distribution characteristics of plant community and the investigation and protection of plant germplasm resources.
plant communitiesclassificationrankingtwo-way indicator species analysiscanonical correspon-dence analysis
NETL
NSTL
万方数据
