辽东山区次生林物种多样性的空间分布及尺度效应  

Spatial distribution and scale effect of species diversity of secondary forests in montane region of eastern Liaoning Province,China

作　　者：邓莉萍[1] 白雪娇[1,2] 秦胜金[1] 魏亚伟[1] 周永斌[1,2] 李露露[1] 牛沙沙[1] 韩美娜[1] 

机构地区：[1]沈阳农业大学林学院,沈阳110866 [2]中国科学院清原森林生态系统观测研究站,沈阳110016

出　　处：《应用生态学报》2016年第7期2197-2204,共8页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(31300378);国家科技支撑计划项目(2012BAD22B040206)资助~~

摘　　要：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.With secondary forest in the montane region of eastern Liaoning Province as research ob- ject, this paper analyzed the spatial distribution and scale effect of Gleason richness index, Simpson dominance index, Shannon diversity index and Pielou evenness index in a 4 hm2 plot. The results showed that spatial distributions of the four diversity indices showed higher spatial heterogeneity. Variance of the four diversity indices varied with increasing scale. Coefficients of variation of the four diversity indices decreased with increasing scale. The four diversity indices of the tree layer were higher than those of the shrub layer, and the variation tendency varied with increasing scale. The results indicated that sampling scale should be taken into account when studying species diver- sity in the montane region of eastern Liaoning Province.

关 键 词：取样尺度 物种多样性指数 空间分布 次生林 

分 类 号：S718.5[农业科学—林学]