Acta Agrestia Sinica

›› 2006, Vol. 14 ›› Issue (1): 72-76.DOI: 10.11733/j.issn.1007-0435.2006.01.016

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Estimation of Biomass and Annual Turnover Quantities of Potentilla Froticosa Shrub

LI Ying-nian1, ZHAO Liang1, WANG Qin-xue2, DU Ming-yuan3, GU Song1, XU Shi-xiao1, ZHANG Fa-wei1,4, ZHAO Xin-quan1   

  1. 1. Northwest Institute of Plateau Biology, CAS, Xining, Qinghai Province 830001, China;
    2. National Institute for Environmental Studies, 305-0053, Japan;
    3. National Institute for Agro-Environmental Science, 305-8604, Japan;
    4. Graduate School of the Chinese Academy of Sciences, Beijing, 100049, China
  • Received:2005-03-16 Revised:2005-12-12 Online:2006-02-15 Published:2006-02-15

高寒金露梅灌丛生物量及年周转量

李英年1, 赵亮1, 王勤学2, 杜明远3, 古松1, 徐世晓1, 张发伟1,4, 赵新全1   

  1. 1. 中国科学院西北高原生物研究所, 西宁, 810001;
    2. 日本国立环境研究所, 日本, 筑波, 305-0053;
    3. 日本农业环境技术研究所, 日本, 筑波, 305-8604;
    4. 中国科学院研究生院, 北京, 100049
  • 作者简介:李英年,(1962- ),男,副研究员,青海乐都人,主要从事生物气象、全球变化研究工作,E-mail:ynli@nwipb.ac.cn
  • 基金资助:
    中国科学院知识创新工程重大项目(KZCX1-SW-01-01A);国家重点基础研究发展规划项目(2002CB412501);中日合作“温带高山草原生态系统的碳素动态和温暖化影响的研究”、“亚太地区环境创新战略计划(APEIS)”项目

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Abstract: The annual net primary productivity and carbon content of the Potentilla Froticosa Shrub were assessed by combining sample plot investigation and unearthed P.froticosa plants measurement,and also by analyzing with linear regression equation the shrub’s accumulated stem biomass,the belowground and the newly growing aboveground biomass which consisted of the length,width and height of the shrub canopy from June to September of the year,as well as the proportion of Potentilla Froticosa Shrub and herbaceous plants in the sample plots.Results show that the actual quantity of P.froticosa woody plants’ belowground biomass turnover amounted to 53.7 g/m2,a turnover rate of 26%,in the year 2004,while the newly growing aboveground biomass reached 41.0 g/m2,and the net primary production,94.7 g/m2.Based on the proportion of the herbaceous plants being 60% and of the Potentilla froticosa woody plants,40%,in the sample plot,the total annual net primary productivity of Potentilla Froticosa Shrub measured up to 858.3 g/m2,which converted into carbon would be 481.9 g/m2.

Key words: Potentilla Froticosa Shrub, Aboveground accumulation biomass, Belowground biomass, Newly growing aboveground biomass of the year, Annual turnover quantity, Fixed carbon content

摘要： 采用样方调查与挖掘相结合的方法,以金露梅(Potentilla fruticosa)灌丛多年累积枝干、地下生物量和当年新生枝叶量及6-9月冠面长度、宽度和高度为参数进行线性回归分析,结合金露梅灌丛与草本植物在样地所占比例,估算其年净初级生产量及年净固碳量。结果表明:2004年金露梅灌丛地下实际周转量为53.7 g/m2,周转率为26%;当年新生枝叶量为41.0 g/m2,年净初级生产量94.7 g/m2;以草本植物与金露梅灌丛在样地所占比例为60%和40%进行估算,2004年金露梅灌丛草甸总净初级生产量为858.3 g/m2,固碳量481.9 g/m2。

关键词: 金露梅灌丛, 地上生物量, 地下生物量, 当年新生枝叶量, 年周转量, 固碳量

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