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对八达岭林场16种林分类型水源涵养林物种丰富度、多样性、均匀度等多样性特征指标进行了研究。结果表明:在西沟油松林、杂木林和黑桦林中多样性指数变化表现为灌木>草本>乔木,在其他群落类型中多样性指数与丰富度指数一致;多样性指数在刺槐残次林、侧柏黄栌混交林、油松林、元宝枫林和华山松林中表现为草本层>灌木层>乔木层,华北落叶松林群落内部各层次物种多样性指数为灌木层>草本层>乔木层。
The species diversity, diversity and evenness of water conservation forest in 16 forest types in Badaling Forest Farm were studied. The results showed that the diversity index of Pinus tabulaeformis, mixed wood and Betula platyphylla forest was shrub> herb> arbor. The diversity index was consistent with the richness index in other community types. , P. orientalis mixed forest, Pinus tabulaeformis forest, A. bungeana forest and Pinus armandii forest showed the herb layer> shrub layer> tree layer, and the species diversity index of shrub layer> herb layer> arbor layer in the community of Larix principis-rupprechtii.