【摘要】 为了解决因毛竹林扩张所带来的生态破坏问题。以毛竹林皆伐后的长期固定样地为研究对象，采用统计分析法分析自然恢复过程中物种丰富度、优势种、群落生物量以及群落稳定性等方面的时间动态变化，探索毛竹林皆伐改造后封育保护、自然恢复群落变化。结果表明：(1)2018—2023年，毛竹林皆伐后植物群落物种组成丰富且物种丰富度变化显著，6 a期间，乔木层物种数量呈逐年小幅度上升趋势，相反，灌木层和草本层下降幅度较大，分别下降了70.4%和82.3%。(2)群落恢复过程中，以落叶树种占优势，常绿树种的数量在逐年上升，至2023年，常绿树种种数和株数占比分别提升了9.8%、10.6%。(3)皆伐改造毛竹林地在自然恢复过程中，群落生物量逐年增加。群落特征变异系数呈波动下降趋势，稳定性则与之相反。(4)恢复过程中的群落生物量受年均温、年降水和物种丰富度的影响，其中，物种丰富度是影响生物量变化的主要因素。综上所述，毛竹林在皆伐改造后的自然恢复过程中，其物种组成丰富，生物量与群落稳定性呈正向增长，群落整体恢复效果良好。更多还原

【Abstract】 To address the ecological damage caused by the expansion of Phyllostachys edulis forests, long-term fixed sample plots after clear-cutting of P. edulis forests were used as the research object. Statistical analysis was employed to analyze the temporal dynamic changes in species richness, dominant species, community biomass, and community stability during the natural recovery process, aiming to explore the changes in community composition under enclosure protection and natural recovery after clear-cutting and transformation of P. edulis forests. The results showed that:(1) From 2018 to 2023, the species composition of plant communities after clear-cutting of P. edulis forests was rich, and significant changes occurred in species richness. Over the six-year period, the number of tree layer species showed a gradual slight upward trend. In contrast, the shrub layer and herb layer decreased significantly, by 70.4% and 82.3%, respectively.(2) During the community recovery process, deciduous tree species were dominant, while the number of evergreen tree species increased annually. By 2023, the proportions of the number of evergreen tree species and individual plants had increased by 9.8% and 10.6%, respectively.(3) In the natural recovery process of clear-cut and transformed P. edulis forest land, community biomass increased annually. The coefficient of variation of community characteristics showed a fluctuating downward trend, while stability showed the opposite trend.(4) Community biomass during the recovery process was influenced by average annual temperature, annual precipitation, and species richness, with species richness being the main factor affecting biomass changes. In conclusion, during the natural recovery process after clear-cutting and transformation of P. edulis forests, the species composition is rich, biomass and community stability show positive growth, and the overall community recovery effect is good.更多还原