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通过铜陵叶山林场次生落叶阔叶林样地调查,对乔木层物种丰富度指数、植物多样性指数、Pielou均匀度指数、生态优势度指数、重要值和种间关联进行分析。结果表明,在12块样地中共有乔木树种19种,平均植物多样性指数、均匀度指数和生态优势度指数分别为1.25、0.70和0.37。优势树种麻栎重要值为105.3,伴生树种化香、枫香和国槐重要值分别为65.1、36.3和18.6。该森林类型为麻栎落叶阔叶混交林。19个树种之间共存在171对相关,但正关联树种对少于负关联树种对,正负关联比小于1,说明该群落类型还处于演替阶段,即由落叶阔叶林向常绿与落叶阔叶混交林过渡阶段。
The species richness index, plant diversity index, Pielou evenness index, ecological dominance index, important value and interspecific association were analyzed based on the secondary deciduous broad-leaved forest in Tongshan, Tongling. The results showed that there were 19 species of tree species in 12 plots, and the average plant diversity index, evenness index and ecological dominance index were 1.25, 0.70 and 0.37 respectively. The dominant tree species, Quercus acutissima, had an important value of 105.3, and the important values of associated tree species, sweet maple and Sophora japonica were 65.1, 36.3 and 18.6, respectively. The forest type is oak deciduous broad-leaved mixed forest. There were 171 pairs of correlation among the 19 tree species, but the number of positive tree species was less than that of negative tree species, the positive and negative correlation ratio was less than 1, indicating that the community type was still in the succession stage, that is, from deciduous broad-leaved forest to evergreen and Deciduous broad-leaved mixed forest transitional stage.