Plant Communities and Factors Responsible for Vegetation Pattern in an Alpine Area of the Northwestern Himalaya

作     者：Man S.RANA S.S.SAMANT Y.S.RAWAT 

作者机构：Department of Plant ScienceGovernment Degree College G.B.Pant Institute of Himalayan Environment & Development Department of BotanyD.S.B.CampusKumaun University 

出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)

年 卷 期：2011年第8卷第6期

页      面：817-826页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：Institute of Himalayan Environment and Development  Kosi-Katarmal  Almora 

主　　题：Species diversity Indicator species Environmental variable Ordination Explainedvariation 

摘      要：The study intended to describe the alpine vegetation of a protected area of the northwestern Himalaya and identify the important environmental variables responsible for species *** placed random plots covering different habitats and altitude to record species composition and environmental *** was classified using hierarchical cluster analysis and vegetation-environment relationships were evaluated with Canonical Correspondence *** communities,each in alpine shrub and meadows were delineated and well justified in the ordination *** species for the different communities were *** species richness and diversity were found in community IV among shrub communities and community II among the *** environmental variables explained 61.5% variation in shrub vegetation and 59.8% variation in *** variables explained higher variability (～35%) than spatial variables (～21%) in both shrubs and ***,among the spatial variables and carbon/nitrogen ratio and nitrogen among the soil variables explained maximum *** 40% variations left *** and species diversity among the other variables had significant correlation with ordination *** showed that altitude and C/N ratio played a significant role in species *** sampling efforts and inclusion of other non-studied variables are also suggested for better understanding.