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以辽东山区次生林为研究对象,分析4 hm~2样地Gleason丰富度指数、Simpson优势度指数、Shannon多样性指数和Pielou均匀度指数的空间分布特征及其与尺度的关系.结果表明:4个多样性指数的空间分布均表现出较高的空间异质性;4个多样性指数的方差随尺度的增加其变化趋势有所差异;4个多样性指数的变异系数随尺度的增加呈下降趋势;乔木层的4个多样性指数值高于灌木层,且随尺度增加其变化趋势有所差异.在分析辽东山区次生林物种多样性时应考虑尺度效应.
Based on the secondary forest in Liaodong mountainous area, the spatial distributions of Gleason richness index, Simpson dominance index, Shannon’s diversity index and Pielou evenness index in 4 hm ~ 2 plots were analyzed and the relationships between them were also analyzed.The results showed that: 4 The spatial distribution of diversity index showed high spatial heterogeneity. The variance of 4 diversity index changed with the increase of scale, and the variation coefficient of 4 diversity index decreased with the increase of scale The four diversity index values of arbor layer were higher than those of shrub layer, and the trend was different with the increasing of scale. The scale effect should be considered when analyzing the species diversity of secondary forest in Liaodong mountainous area.