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以样方调查数据为基础,采用物种丰富度指数、均匀度指数和多样性指数,对辽宁省东部山区森林生态系统中种植林下参和大叶芹这两种作物对林下植物物种多样性的影响进行了研究,并分析了不同作物种植样地和未种植样地以及不同种植作物样地之间的各种指数的差异程度。结果表明:(1)种植两种作物均对灌木层物种产生了显著的影响,降低了物种多样性。(2)种植林下参使得草本层的物种丰富度显著降低,均匀度显著增加,而多样性指数差异不显著。(3)种植大叶芹使得草本层的物种丰富度、均匀度和多样性指数均显著降低。(4)林下参种植样地和大叶芹种植样地之间草本层的物种丰富度指数、均匀度指数和多样性指数之间存在显著差异。
Based on the quadrats survey data, species richness index, evenness index and diversity index were used to analyze the species diversity of undergrowth plant under both plantation understory and daphniphyllum in forest ecosystems of eastern Liaoning mountainous areas The impacts of different types of crops were studied, and the differences of various indices between cultivated and unplanted plots and cultivated plots were analyzed. The results showed that: (1) Both crops had significant effects on shrub species and reduced species diversity. (2) Plantation understory makes the species richness of the herbaceous layer significantly reduced and evenness increased significantly, while the diversity index was not significantly different. (3) Planting magnolia grandiflora significantly reduced species richness, evenness and diversity index of the herb layer. (4) There was a significant difference in species richness index, evenness index and diversity index of the herbaceous layer between the understory planting samples and the large-planting samples.