北京林业大学学报2025，Vol.47Issue(8)：64-76,13.DOI:10.12171/j.1000-1522.20240368
长白山阔叶红松林不同林层物种与结构多样性对群落生长的影响
Effects of species and structural diversity in different forest layers on community growth in broadleaved Korean pine forests in Changbai Mountain,northeastern China
摘要
Abstract
[Objective]This study aims to reveal the regulatory mechanisms of species diversity and structural diversity on tree growth in the broadleaved Korean pine forest of Changbai Mountain of northeastern China and to explore the effects of species diversity and structural diversity on community structure and growth.[Method]Based on the field survey data of broadleaved Korean pine forest in Changbai Mountain in 2023,the forest was divided into different canopy layers.Correlation analysis and path analysis were used to study the relationship between community species diversity,structural diversity,and community growth indicators,including aboveground biomass,leaf area,basal area at breast height,and stand density.[Result](1)The diameter structure of species in the sample plots mainly presented three patterns:inverse-J shape,unimodal shape,and bimodal shape.(2)The understory layer exhibited the highest species diversity(Shannon index=1.30)and species evenness(Evenness index=0.90).Correlation analysis showed that species diversity was significantly positively correlated with aboveground biomass,leaf area,and basal area at breast height(P<0.01),with the most pronounced effect observed in the midstory layer.(3)Path analysis indicated that species diversity significantly promoted community growth through direct effects,whereas the influence of structural diversity on growth indicators varied significantly among different canopy layers.[Conclusion]Species diversity and structural diversity in different canopy layers of the broadleaved Korean pine forest in Changbai Mountain significantly affect community growth and ecological functions.Higher species diversity and an appropriate level of structural diversity contribute to the enhancement of aboveground biomass,leaf area,and basal area at breast height,improving forest productivity and ecological stability.The findings provide a scientific basis for stratified forest management and the ecological conservation of broadleaved Korean pine forests,helping to enhance the stability and sustainability of forest ecosystems.关键词
阔叶红松林/物种多样性/结构多样性/林层Key words
broadleaved Korean pine forest/species diversity/structural diversity/forest layers分类
农业科技引用本文复制引用
刘健,刘琪璟,董淳超,石宽,钱尼澎,孙震,孟德琛,李港墩..长白山阔叶红松林不同林层物种与结构多样性对群落生长的影响[J].北京林业大学学报,2025,47(8):64-76,13.基金项目
国家科技基础资源调查专项(200-612004009). （200-612004009）
