红松、刺楸人工针阔混交林物种多样性研究

通过对红松、刺楸人工混交林,红松纯林物种多样性的研究,结果表明,红松、刺楸混交林物种丰富度最大,植物种类最多,红松纯林仅为混交林的43%,总数量为混交林的32%,红松、刺楸混交林乔木层多样性指数为1.430 5,均匀度指数为0.687 9,优势度指数为0.290 6,丰富度指数为1.413 7,而红松纯林多样性指数、均匀度指数均为0,优势度指数为1,丰富度指数为0.371 2。在灌木层中,混交林与纯林各项指标区别不大,只有丰富度指数为混交林(纯林。在草本层中,混交林各项指数基本都大于纯林,只有均匀度指数红松纯林(混交林。

Species Diversity of Conifer-Hardwood Plantation of Pinus koraiensis & Kalopanax septemlobus

Species diversity of conifer-hardwood plantation of Pinus koraiensis ＆ Kalopanax septemlobus were studied. Result shows that： species richness of Pinus koraiensis, Kalopanax septemlobus mixed forest is the most; plant species are the most,pure forest of Pinus koraiensis is only 43% of mixed forest,total number is 32% of mixed forest. Diversity indices of the tree layer of Pinus koraiensis- Kalopanax septemlobus mixed forest is 1. 430 5, evenness indices is 0. 687 9, dominance index is 0.290 6 ,richness index is 1. 413 7. Diversity ＆ evenness indices of pure forest of Pinus koraiensis are all 0 ,domi- nance index is 1 ,richness index is 0. 371 2. In the shrub layer,various indices of mixed forest ＆ pure forest have little difference ; only richness index is mixed forest 〉 pure forest. In herbaceous layer, each index of mixed forest are basically greater than that of pure forest; only evenness index of Pinus koraiensis is pure forest 〉 mixed forest.