草业科学Issue(10)：40-47,8.DOI:10.11686/cyxb2014509
高山嵩草草甸初级生产力、多样性与土壤因子的关系
Relationships between plant diversity,soil property and productivity in an alpine meadow
摘要
Abstract
The relationships among primary productivity,soil factors and plant diversity in alpine meadows were investigated by analyzing plant community diversity,productivity and soil nutrients of three grassland types in the Three Rivers District,Kobresia pygmaea +Kobresia humilis ,Kobresia pygmaea +forbs and Ko-bresia pygmaeaPolygonum macrophyllum meadow.The biomass,community diversity and soil physical and chemical properties of the different alpine meadows types differed significantly (P <0.05).The Kobresia pyg-maea +P .macrophyllum meadow had the highest productivity,number of species and soil nutrient content. Correlation analysis showed that forage biomass and soil physical-chemical properties (P <0.05)and soil or-ganic matter (P <0.01)were significantly positively correlated.The number of plant species present was also correlated with soil nutrients (P <0.01),while uniformity and diversity of community structure were positive-ly correlated (P <0.01)with soil potassium content.The competitive advantage of dominant species was asso-ciated with tolerance of low fertility(P <0.05),particularly phosphorus.Aboveground biomass and forage bio-mass and available phosphorus were significantly positively correlated (P <0.01 ).Nitrogen was associated with species richness and productivity.关键词
高寒草甸/初级生产力/多样性/土壤理化性质Key words
alpine meadow/primary productivity/community diversity/soil properties引用本文复制引用
石红霄,侯向阳,师尚礼,吴新宏,李鹏,杨婷婷..高山嵩草草甸初级生产力、多样性与土壤因子的关系[J].草业科学,2015,(10):40-47,8.基金项目
国家重点基础研究发展计划（973计划）（2014CB138802），国家科技支撑计划课题（2012BAD13B07）和中央级公益科研院所基本科研业务专项（1610332014006）资助。 （）
