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Forest and Grassland Resources Research >

2023 , Vol. 0 >Issue 2: 138 - 146

DOI: https://doi.org/10.13466/j.cnki.lyzygl.2023.02.019

Research Briefing

Species Diversity and Its Associated Factors of Castanopsis orthacantha Community in Central Yunnan

  • Zexi PENG ,
  • Hang LUO ,
  • Xiaoying LI ,
  • Yanhong XU ,
  • Wuyuan YIN ,
  • Hongqin ZHU ,
  • Yuqiang CHEN ,
  • Xiaoqin CHEN
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  • Southwest Forestry University,Kunming 650224,China

Received date: 2023-03-08

  Revised date: 2023-04-24

  Online published: 2023-06-26

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Abstract

In order to accurately grasp the species diversity level of Castanopsis orthacantha community and its relationship with related factors in central Yunnan,based on the investigation of typical plots,the Margalef richness index,Pielou evenness index,Shannon-Weiner diversity index and species diversity comprehensive index were used to measure the species diversity level of Castanopsis orthacantha community,and the grey correlation analysis method was used to explore the relationship between species diversity level and site factors,stand factors and forest disturbance intensity.The results showed that:1) The species composition of Castanopsis orthacantha community was rich,involving 75 families,141 genera and 202 species,and the species composition of shrub layer was the most complex.The tree species composition of the arbor layer had the characteristics of typical subtropical evergreen broad-leaved forest.And there were significant differences in species composition and important values in different regions.2) The richness index,diversity index and evenness index of shrub layer (including regeneration layer) were the highest,and the species diversity of Castanopsis orthacantha community was at a medium level.The species diversity of different survey areas in the study area was different.The contribution rate of herb layer and shrub layer (including regeneration layer) to the comprehensive index of community species diversity was the highest.3) There was a strong correlation between species diversity and six factors in three levels of site factors,stand factors and forest disturbance intensity.The order of correlation degree was altitude>forest disturbance intensity>average DBH>aspect>plant density>slope.Through research,the aim is to provide a basis for the restoration and conservation measures of Castanopsis orthacantha community in central Yunnan.

Key words： Castanopsis orthacantha; species diversity; correlation factor; grey correlation analysis; central Yunnan

Cite this article

Zexi PENG , Hang LUO , Xiaoying LI , Yanhong XU , Wuyuan YIN , Hongqin ZHU , Yuqiang CHEN , Xiaoqin CHEN . Species Diversity and Its Associated Factors of Castanopsis orthacantha Community in Central Yunnan[J]. Forest and Grassland Resources Research, 2023 , 0(2) : 138 -146 . DOI: 10.13466/j.cnki.lyzygl.2023.02.019

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