论文部分内容阅读
从物种组成、多样性及重要值3个方面对山坡次生蒙古栎林和山间谷地杂木林2种生境下野生平贝母的伴生物种进行了调查分析。结果表明:蒙古栎林计有伴生植物50科88属100种;杂木林有伴生植物47科96属104种。蒙古栎林中乔木、灌木和草本层的物种多样性指数(H)和均匀度指数(E)依次增加,而杂木林中灌木层多样性指数和均匀度指数均低于乔木和草本层。2种生境中伴生植物的丰富度指数(R)排序均为草本>乔木>灌木。在蒙古栎林中蒙古栎的重要值最大,为25.418,显著大于其它物种,是群落中的优势种。在杂木林中主要植物的重要值则差异明显。
From the species composition, diversity and important value of three aspects of hillside secondary Mongolian oak forest and mountain valleys in two kinds of habitat Fusheng wild Fritillaria species were investigated. The results showed that there were 100 species of 88 genera in 50 families of Quercus mongolica and 104 species of 96 genera in 47 families. The species diversity index (H) and evenness index (E) of trees, shrubs and herbs in Quercus mongolica forests increased successively, while that of shrubs in shrubs and herbs was lower than that in tree and herb layers. The order of richness index (R) of the accompanying plants in two habitats was Herbaceous> Arbor> Shrub. In Quercus mongolica forest, the important value of Quercus mongolica was the highest, which was 25.418, which was significantly larger than other species and was the dominant species in the community. Significant differences in the importance of major plants in the tumbleweed forest.