河南白云山温带落叶阔叶林木本植物萌生特征及与环境因子的关联分析

Sprouting characteristics of woody plants and their correlation analysis with environmental factors in temperate deciduous broad-leaved forest in Baiyunshan,Henan Province

基于河南白云山温带落叶阔叶林木本植物,探讨不同植物类群萌生更新特征及萌生能力与环境因子间的关联性。结果表明:1)该样地木本植物发生萌生现象的科、属和种的比例分别为81.82%,77.78%和68.13%,但萌生率相对较低(11.98%);2)不同植物类群的萌生能力存在显著差异(P<0.01),乔木层和亚乔木层在各径级水平上萌生能力差异显著(P<0.01);灌木层和木质藤本植物在各径级水平上萌生能力无显著差异(P=0.28;P=0.15);3)群落萌生能力随着群落物种多度的增加而升高,随着群落物种丰富度的增加而降低,群落萌生能力与海拔、凹凸度呈显著正相关关系。

Based on the temperate deciduous broad-leaved forest in Baiyunshan of Henan Province,the characteristics of sprout regeneration of different plant groups and the relationship between the sprouting ability and environmental factors were discussed.The results showed that:1)the proportion of families,genera and species of woody plants in the sample plot was 81.82%,77.78%and 68.13%,respectively,but the overall sprouting rate was relatively low(11.98%);2)The sprouting ability of different plant groups was significantly different(P<0.01),and the sprouting ability of tree layer and subtree layer was significantly different at different diameter levels(P<0.01),there was no significant difference in the sprouting ability of shrub layer and liana at different diameter classes(P=0.28;P=0.15);3)The community sprouting ability increase with the increase of community species abundance,and decrease with the increase of community species richness.The community sprouting ability is positively correlated with altitude and convexity.