冀北山地天然林与人工林植被物种多样性研究  

Plant Species Diversity of Natural Forests and Plantations of in Mountainous Land in North Hebei

作　　者：赵娜[1] 李玉灵[1] 张劲松[2] 王玉魁[3,4] 席常新 李爽[1] 

机构地区：[1]河北农业大学林学院,河北保定071000 [2]中国林业科学院林业研究所,北京100091 [3]北京林业大学水土保持学院,北京100083 [4]国家林业局泡桐研究开发中心,河南郑州450003 [5]河北省木兰围场国有林场管理局,河北承德068450

出　　处：《西北林学院学报》2011年第2期15-21,共7页Journal of Northwest Forestry University

基　　金："十一五"国家科技支撑计划(2006BAD03A11);国家教育部留学回国人员基金资助项目(20071108)

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)林和华北落叶松(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(RI)、Shannon-Wiener(H)、Si mpson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α多样性指数均无明显差异(P<0.05)。人工林内样地间草本β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。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 different forest types were similar,and in herb layer however,the species types were different.Dominant herb species in natural secondary forests of P.tabulaeformis were Dendranthema chanetii,and that in forest plantations were Carex ussuriensis.With the increase of altitude,except for Alatalo evenness index,all the Alpha biodiversity indices of the natural secondary forest first decreased and then increased,that of the plantations reduced in different altitudes.Alatalo evenness index of herb layer of natural secondary forests decreases and that of herb layer of plantations increased first,and then decreased.Alpha biodiversity index of the both forest types in the same altitude had no significant difference（P0.05）.Beta biodiversity index between plots of natural secondary forests increased,that between plots of plantations decreased.

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 

分 类 号：S718.55[农业科学—林学]