Dynamics of Above-and Below-ground Biomass and C,N,P Accumulation in the Alpine Steppe of Northern Tibet

作     者：LU Xuyang YAN Yan FAN Jihui CAO Yingzi WANG Xiaodan 

作者机构：Key Laboratory of Mountain Environment Evolvement and Regulation Institute of Mountain Hazards and Environment CAS Chengdu 610o41 China Shenzha Alpine Steppe and Wetland Ecosystem Observation and Experiment Station Institute of Mountain Hazards and Environment CAS Shenzha 85310o China 

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：838-844页

核心收录：

学科分类：090503[农学-草业科学] 0909[农学-草学] 0905[农学-畜牧学] 09[农学] 0903[农学-农业资源与环境] 0901[农学-作物学] 

基　　金：funded by One Hundred Young Persons Project of Institute of Mountain Hazards and Environment (No.SDSQB-2010-02) the National Natural Science Foundation of China (No.41001177) Knowledge Innovation Program of the Chinese Academy of Sciences (Nos.KZCX2-YW-QN31,KZCX2-XB3-08) 

主　　题：Biomass Nutrient concentration Nutrient accumulation Alpine steppe Northern Tibet 

摘      要：The temporal dynamics of the biomass, as well as the carbon （C）, nitrogen （N）, phosphorus （P） concentrations and accumulation contents, in above- and below-ground vegetation components were determined in the alpine steppe vegetation of Northern Tibet during the growing season of 2OLO. The highest levels of total biomass （311.68 g m-2）, total C （115.95 g m-2）, total N （2.60 g m-2）, and total P （0.90 g m-2） accumulation contents were obtained in August in 2010. Further, biomass and nutrient stocks in the below-ground components were higher than those of the above-ground components. The dominant species viz., Stipa purpurea and Carex moorcrofli had lower biomass and C, N, P accumulations than the companion species which including Oxytropis. spp., Artemisia capillaris Thunb., Aster tataricus L., and SO on.