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冀北山地天然林与人工林植被物种多样性研究

标题: 冀北山地天然林与人工林植被物种多样性研究
英文标题: Plant Species Diversity of Natural Forests and Plantations of in Mountainous Land in North Hebei
作者: 赵娜,李玉灵,张劲松,王玉魁,席常新,李爽
出版时间: 2011-01-01
机构: 河北农业大学
关键词: 天然次生油松林,华北落叶松人工林,多样性指数,木兰围场自然保护区
英文关键词: natural secondary forest of Pinus tabulaeformis,plantations of Larix principis-rupprechtii,diversity indices,Mulan-Weichang Nature Reserve of Hebei Province
刊名: 西北林学院学报
英文刊名: Journal of Northwest Forestry University
ISSN: 1001-7461
卷号: 002
基金: ^A国家科技支撑计划项目^B2006BAD03A11^D1%^A教育部留学回国人员科研启动基金^B20071108^D2
页码: 15-21
分类号: S718.55
摘要: 采用典型样地调查法,对冀北河北木兰围场自然保护区内天然次生油松(Pinus tabulae-formis)林和华北落叶+k(Larix principis-rupprechtii)人工林植被物种多样性进行研究.结果表明,2种林型下灌木层物种数与种类相近,而草本层物种种类有所不同;天然林草本层以菊科(Compositae)植物为主,优势种为小红菊(Dendranthema chanetii);人工林草本层以莎草科(Cyperaceae)等阳性植物为主,优势种为乌苏里苔草(Carex ussuriensis).同一林型不同海拔样地间草本层的Margalef丰富度指数(R1)、Shannon-Wiener(H)、Simpson多样性指数(G)和Pielou均匀度指数随海拔高度的增加,在天然林内先减小后增加,人工林内则持续减小;只有Alatalo均匀度指数呈现不同变化趋势.2种林型下同一海拔的样地间各草本а多样性指数均无明显差异(P<0.05).人工林内样地间草本口多样性指数随海拔的增高而增加;天然林内该指数随着海拔的增高而减小.
英文摘要: On the basis of investigation data from plots in natural secondary forests of Pinus tabulaeformis and plantations of Larix principis-rupprechtii Mulan-Weichang Nature Reserve of Hebei Province,the structures of plant communities and characteristics of species diversity were investigated.Important values of plant species in each layer were measured,and the richness,evenness and diversity indices of species in each layer were calculated.The results indicated that the species distributed in shrub layer in two ...