燕山北部山地典型植物群落的物种多样性  

Species diversity of typical plant communities in the north region of Yanshan Mountain

作　　者：李东胜[1,2] 王丽[2] 许中旗[2] 姚卫星[3] 李校[3] 

机构地区：[1]河北省林业调查规划设计院,河北石家庄050051 [2]河北农业大学林学院,河北保定071000 [3]河北省木兰围场国有林场管理局,河北围场068400

出　　处：《河北农业大学学报》2014年第3期44-50,共7页Journal of Hebei Agricultural University

基　　金：国家"十二五"科技支撑项目(2011BAD38B0605);河北省科技厅科技支撑项目(10236728);林业公益性行业科研专项(200804027-07)

摘　　要：为了解燕山北部山地不同群落物种多样性的差异,对该区5种典型植物群落的物种多样性进行了调整分析。结果表明:植物区系组成由高到低依次为榛子灌丛、天然次生杨桦林、华北落叶松人工林、绣线菊-榛子灌丛、绣线菊灌丛。草本层的各个多样性指数表现出相似规律,即榛子灌丛、天然次生杨桦林和华北落叶松人工林较高,而绣线菊灌丛和绣线菊-榛子灌丛较低;灌木层的多样性指数表现为榛子灌丛最高,而其他4种植物群落之间也无显著差异;乔木层的物种多样性也均无显著差异。总体上,榛子灌丛、天然次生杨桦林和华北落叶松人工林的物种多样性高于绣线菊灌丛和绣线菊-榛子灌丛。5种群落类型都有一定数量的丰富种和稀有种以及中间类型,但绣线菊灌丛和绣线菊-榛子灌丛的稀有种数量相对较少。影响5种植物群落物种多样性的主要因素在于立地条件和人为干扰。In order to understand the differences in species diversity among the typical plant communities in the north region of Yanshan Mountain, the flora and species diversity of 5 kinds plant community （Spiraea pubescens shrub, Spiraea pubescens-Corylus heterophylla shrub, Corylus heterophylla shrub, natural secondary poplar and birch forest and larch plantation） were studied in the paper. The results showed that the plant communities were ranked in descending order as follows, Corylus heterophylla shrub 〉 natural secondary poplar and birch forest 〉 larch plantation 〉 Spiraea pubescens-Corylus heterophylla shrub 〉 Spiraea pubescens shrub. The Margarlef index,the Pielou index, the Simpson index and the Shannon-Wiener index were used to analyze the species diversity of herb layer, shrub layer and arbor layer for the five communities. In terms of herb layer,there was a similar trend for 4 kinds of diversity index among 5 kinds of commvnity that the species diversity of Corylus heterophylla shrub,natural secondary poplar and birch forest and larch plantation were higher than Spiraea pu- bescens shrub and Spiraea pubescens-Corylus heterophylla shrub; for shrub layer, the species diversity index of Corylus heterophylla shrub was the highest,while there was no significant difference among the other four kinds of plant communities; there was no significant difference among the other 5 kinds of plant communities for the species diversity indexes of tree layer. In general,the species diversity of Corylus heterophylla shrub,natural secondary poplar and birch forest and larch plantation were obviously higher than that of Spiraea pubescens shrub and Spiraea pubescens-Corylus heterophylla shrub. All of the 5 plant communities had a certain number of rich species, rare species and intermediate types, but Spiraea pubescens shrub and Spiraea pubescens-Corylus heterophylla shrub had fewer rare species than the others. It was the site conditions and disturbances that affected the species diversity of the five kinds of plant c

关 键 词：物种多样性 植物区系 群落 燕山 

分 类 号：S718.542[农业科学—林学]