| 摘要: |
| 【目的】阐明不同林分在维持群落多样性和土壤养分方面的差异，为保护亚热带山地植物多样性和提升森林生态系统功能提供理论指导。【方法】 以枹栎石灰花楸落叶阔叶林、四照花短毛椴落叶阔叶林、黄山松林和竹阔混交林为对象，研究其群落特征和土壤环境特征。【结果】①黄山松林的树高、胸径和密度远大于其他林分；群落α多样性表现为落叶阔叶林>黄山松林>竹阔混交林，β多样性则相反。②土壤养分含量表现为竹阔混交林最大，落叶阔叶林居中，黄山松林最小，土壤碳氮磷化学计量比和凋落物生物量表现则相反。③林分群落的树高、胸径和密度与土壤养分含量呈负相关；土壤养分含量与多样性指数E呈正相关，而与多样性指数R和Ma呈负相关。【结论】落叶阔叶林对群落多样性的维持和土壤养分的投入更优，群落更稳定；今后在亚热带山地森林保护中要更多关注阔叶林林分群落。 |
| 关键词: 庐山 不同林分 群落结构 环境因子 冗余分析 |
| DOI：10.13207/j.cnki.jnwafu.2025.12.007 |
| 分类号: |
| 基金项目:江西省自然科学基金面上项目(20232BAB205020)；中国科学院庐山植物园庐山植物专项(2019ZWZX01) |
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| Characteristics of plant community structure and environmental factors in different forest stands of Lushan Mountain |
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XIANG Zeyu, XI Dan, ZHANG Zhaochen, ZHANG Jiaxin, WANG Jingxuan, ZHOU Saixia
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Jiangxi Provincial Key Laboratory of Carbon Neutrality and Ecosystem Carbon Sink,Lushan Botanical Garden Jiangxi Province and Chinese Academy of Sciences,Jiujiang,Jiangxi 332900,China
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| Abstract: |
| 【Objective】The purpose of this study is to clarify the differences forest stands in maintaining community diversity and soil nutrients,and to provide theoretical guidance for protecting plant diversity and improving forest ecosystem functions in subtropical forest.【Method】The community characteristics and soil environmental characteristics of different forest stand communities were studied by Quercus serrata+Sorbus folgneri deciduous broadleaf forest,Cornus kousa subsp.chinensis+Tilia chingiana deciduous broadleaf forest,Pinus hwangshanensis forest and mixed Phyllostachys reticulata-broadleaf forest.【Result】① The tree height,DBH and density of P.hwangshanensis forest were much larger than other forest stands.α diversity of community was the highest in deciduous broadleaf forest,followed by P.hwangshanensis forest,and the lowest in mixed P.reticulata-broadleaf forest,while β diversity was the opposite.② The soil nutrient content was the highest in mixed P.reticulata-broadleaf forest,followed by deciduous broadleaf forest,and the lowest in P.hwangshanensis forest.The stoichiometric ratio of soil (carbon,nitrogen and phosphorus) and litter biomass were the opposite.③ The tree height,DBH and density of forest stands were negatively correlated with soil nutrient content.The soil nutrient content was positively correlated with the diversity index E,while negatively correlated with the diversity R and Ma.【Conclusion】The deciduous broadleaf forest had better diversity maintenance and soil nutrient input and the community was more stable.In the future,more attention should be paid to the broadleaf forest community in subtropical mountain forest protection and management. |
| Key words: Lushan Mountain different forest stands community structure environmental factors redundancy analysis |
