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采用空间代替时间的方法,通过样方调查对嵩山侧柏人工林恢复过程中不同群落的物种多样性变化进行了研究.结果表明,在侧柏人工林恢复过程中,灌木层和草本层的物种丰富度和多样性变化规律相似,物种丰富度(Margalef指数)和物种多样性(Shannon-Wiener指数及Simpson指数)都表现为“低→高→低→高”的变化趋势,在波动中逐渐增加;物种均匀度(Pielou指数)却没有明显的增加趋势.不同恢复阶段因人工林环境条件的改变导致林下不断出现因喜阳和耐荫物种的交替而出现的物种消亡和更新,个体数目分布的不均使物种均匀度显示出较大的波动性.总体来看,侧柏人工林在恢复过程中是朝着有利于物种多样性恢复的方向发展.
Using space instead of time, the changes of species diversity in different communities during the restoration of Platycladus orientalis plantations were studied by means of quadrat investigation.The results showed that in the restoration of Platycladus orientalis plantations, the species of shrub layer and herb layer The changes of richness and diversity were similar. The species richness (Margalef index) and species diversity (Shannon-Wiener index and Simpson index) all showed the trend of “low → high → low → high” (Pielou index) did not increase obviously.Due to the change of plantation environmental conditions in different restoration stages, the emergence and disappearance of species of Xiyang and shade-tolerant species continued to occur under the forest, the number distribution of individuals The unevenness of species showed greater volatility.In general, the plantation of Platycladus orientalis developed in the direction of recovery in favor of species diversity.