山西省庞泉沟自然保护区森林群落主要物种生态位特征  

Niche characteristics of dominant species in forest community in Pangquangou Nature Reserve,Shanxi Province.

作　　者：程小琴[1] 韩海荣[1] 魏阿沙 张延华 伊力塔[1] 陈圆[1] 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室 [2]山西省林业厅 [3]河南省栾川县潭头镇政府

出　　处：《北京林业大学学报》2007年第S2期283-287,共5页Journal of Beijing Forestry University

基　　金："十五"国家科技攻关课题(2001BA510B11-03)

摘　　要：以群落标准地作为资源状态,以物种的重要值作为物种对资源位计测依据,用Levins公式中的Shannon-Wiener指数和生态位重叠指数对山西省庞泉沟自然保护区森林群落10种主要乔木、9种主要灌木和10种主要草本植物进行生态位分析.结果表明,在群落的乔木层中,华北落叶松的生态位宽度最大,为3.252 4,它与云杉是庞泉沟自然保护区的优势种;灌木层中毛叶水子、茶条槭等为优势种;草本层中黄精、粗根老鹳草等为优势种.优势种间生态位重叠值较大,资源共享趋势比较明显,在资源利用中存在一定的竞争.该文的研究结果可为庞泉沟自然保护区加强野生动植物资源保护管理以及景观资源的合理规划和目标管理提供基础材料.Based on the importance value and with community styles as the resource state,the Shannon-Wiener index and the Levins' niche overlap of 10 main tree species,9 main shrub species and 10 main herb species in Pangquangou Nature Reserve,Shanxi Province were calculated.The results show that the niche breadth of Larix principis-rupprechtii is the biggest(3.252 4) in arbor layer of the community.L. principis-rupprechtii and Picea asperata are the dominant tree species and Cotoneaster submultiflorus and Acer ginnala are dominant species in shrub layer.The niche overlaps are great for dominant species.Polygonatum sibiricum and Geranium dahuricum are more obvious to the resource-sharing trend.There is certain competition in the utilization of resources among species.The results might provide the basic material for landscape planning and wild protection in this region.

关 键 词：生态位宽度 生态位重叠 庞泉沟自然保护区 

分 类 号：S718.5[农业科学—林学]