6种灌木不同器官生物量及其碳、氮含量的分配特征  

Distribution characteristics of biomass,carbon and nitrogen of different organs of six shrubs in northern Shanxi Province

作　　者：张智袁 赵祥[1] 李刚[1] 

机构地区：[1]山西农业大学动物科技学院,山西太谷030801

出　　处：《草原与草坪》2016年第3期23-27,34,共6页Grassland and Turf

基　　金：中国科学院战略性先导科技专项(XDA05050403);国家自然科学基金(31572452);山西省攻关项目(20140311013-3)资助

摘　　要：通过研究晋北地区草地黄刺玫、沙棘、荆条、酸枣、绣线菊和柠条等6种常见灌木的叶片、新生枝、老龄枝生物量及其碳、氮含量的分配特征,旨在为草地准确估算草地植物碳、氮循环提供依据。结果表明:黄刺玫的地上生物量最大,是酸枣的7倍。沙棘叶片生物量占地上生物量的比例最大;黄刺玫新生枝生物量占地上生物量的比例最大;柠条老龄枝生物量占地上生物量的比例最大。黄刺玫、沙棘和荆条的地上部分各器官生物量分配特征相似,由高到低表现为叶片、老龄枝、新生枝;绣线菊、酸枣和柠条的地上部分各器官生物量分配特征相似,由高到低表现为老龄枝、叶片、新生枝。6种灌木地上部分各器官碳含量差异不显著,氮含量分布由高到低为叶片、新生枝、老龄枝。The allocation characteristics of biomass,carbon and nitrogen in leaf,new branch and old branch of 6shrubs,including Rosa xanthine,Fructus hippophae,Vitex negundovar,Ziziphus jujube,Spiraea salicifolia and Caragana korshinskii were studied in order to provide the basis for estimating the carbon and nitrogen of grassland plants.The results showed that aboveground biomass of R.xanthina was the maximum,which was 7times of Z.jujuba.The proportion of F.hippophaeleaf biomass in aboveground biomass accounted for the largest.The proportions of R.xanthina new branch biomass,C.korshinskii old branch biomass accounted for the largest in aboveground biomass respectively.The biomass of each component of R.xanthine,F.hippophae and V.negundovar showed a similar distribution pattern,which was in an order of leaf,old branches and new branches from high to low.The biomass of each component of S.salicifolia,Z.jujubaand C.korshinskii showed a similar distribution pattern,which was in an order of leaf,old branches and new branches from high to low.The distribution of the carbon content of 6shrubs had not significant difference.The content of nitrogen showed an order of leaf,new branches,old branches from high to low.

关 键 词：灌木 器官 生物量 碳、氮含量 

分 类 号：S718.55[农业科学—林学]