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在对雾灵山自然保护区9个代表林分物种多样性详细调查的基础上,运用多种群落多样性指数对其群落的物种多样性进行分析。结果表明:各群落在乔木层、灌木层和草本层的物种多样性指数均呈现出一定的差异。乔木层物种多样性、P ielou均匀度指数和丰富度指数变化趋势呈一致性。灌木层和草本层均出现不一致性,主要是因为各林分起源不同,天然林群落是由处于不同发育阶段、具有不同组成结构、大小不同的众多斑块镶嵌而成的,是一个健康的生态系统。人工林群落的生物多样性很低,使人工林群落无论在活力、组织结构和恢复能力等诸方面,均表现出系统的不健康特点。
Based on a detailed investigation of the species diversity of nine representative stands in Wuling Mountain Nature Reserve, the species diversity of their communities was analyzed using multiple community diversity indices. The results showed that there was a certain difference in the species diversity index of each community in the tree layer, shrub layer and herb layer. The arbor layer species diversity, P ielou evenness index and richness index showed the same trend. The inconsistencies occurred between the shrub layer and the herb layer, mainly due to the different origins of the forests. The natural forest community is inhabited by numerous patches of different composition and size in different developmental stages. It is a healthy ecology system. The biodiversity of the plantation community is very low, which makes the plantation community show systemic unhealthy characteristics in terms of vitality, organizational structure and resilience.