桉树工业原料林林下植物物种多样性研究*

 通过群落学调查,根据30块样地的调查资料,采用物种丰富度、Simpson指数、Shannon-Winner指数和均匀度指数,分析了桉树工业原料林林下植物物种多样性特征。结果表明:在1 350 m²的样方内,桉树工业原料林林下物种丰富度的排序为草本层＞灌木层,灌木层物种丰富度为4～16,草本层为10～22。按Simpson指数和Shannon-Winner指数的排序为灌木层＞草本层,灌木层Simpson指数的变化范围 0.639 1～0.859 9, Shannon-Winner指数为1.142 5～2.260 8,草本层Simpson指数的变化范围0.096 5～0.816 8,Shannon-Winner指数为0.311 4～2.022 9。基于Simpson指数的均匀度和Shannon-Wiener指数的均匀度的排序为灌木层＞草本层。

Study on Undergrowth Vegetation Species Diversity in Industrial Plantation of Eucalyptus

In this paper,according to investigation information of 30 the plots, undergrowth vegetation species diversity in industrial plantation of Eucalyptus were studied. The main results were as follows: In 1 350 m² the plots, vegetation species abundance of industrial plantation of Eucalyptus were in the order of herb layer＞shrub layer, species abundance of shrub layer were 4～16, and herb layer were 10～22. Simpson diversity index and Shannon-Wiener diversity index were in the order of shrub layer＞herb layer. Simpson diversity index of shrub layer was 0.639 1～0.859 9, Shannon-Wiener diversity index of shrub layer was 1.142 5～2.260 8,Simpson diversity index of herb layer was 0.096 5～0.816 8, Shannon-Wiener diversity index of herb layer was 0.311 4～2.022 9. Evenness index of industrial plantation of Eucalyptus were in the order of shrub layer＞herb layer.