地理科学进展 ›› 2004, Vol. 23 ›› Issue (4): 35-42.doi: 10.11820/dlkxjz.2004.04.005

• 生态环境与碳循环 • 上一篇    下一篇

草地生态系统土壤呼吸研究进展

刘立新1,2, 董云社1, 齐玉春1   

  1. 1. 中国科学院地理科学与资源研究所, 北京 100101;
    2. 中国科学院研究生院, 北京 100039
  • 收稿日期:2004-03-01 修回日期:2004-04-01 出版日期:2004-07-24 发布日期:2010-08-07
  • 作者简介:刘立新(1977-),女,中科院地理科学与资源研究所博士研究生,研究方向为环境生物地球化学。E-mail: liulx@igsnrr. ac. cn
  • 基金资助:

    中国科学院知识创新重大项目(KZCX1-SW-01-04)、中国科学院地理科学与资源研究所知识创新项目(CXIOG-E01-03-01)、国家重点基础研究发展规划项目(2002CB412503)资助。

The Development on the Soil Respiration of Grassland Ecosystem

LIU Lixin1,2, DONG Yunshe1, QI Yuchun1   

  1. 1. Institute of Geographical Sciences and Natural Research, Beijing 100101, China,
    2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
  • Received:2004-03-01 Revised:2004-04-01 Online:2004-07-24 Published:2010-08-07

摘要:

土壤呼吸是草地生态系统碳循环过程中的关键环节,也是草地生态系统中碳素向大气输出的主要途径。土壤中碳素的释放能够显著增加大气中CO2的浓度,增强温室效应,从而对全球气候和环境变化产生重要影响。文章综合介绍了国内外有关土壤呼吸的各种测定方法,特别是分析了影响草地土壤呼吸的主要环境因素,并就草地土壤呼吸与根系呼吸的区分方法等进行了详细的讨论。

关键词: 草地碳循环, 根系呼吸, 土壤呼吸

Abstract:

The flux of carbon from grassland to the atmosphere occurs primarily in the form of CO2,and is the result of soil respiration,which makes that the soil respiration is one of the major pathways to influence the global carbon cycle. Increasing release of carbon from the soils could significantly exacerbate the increase of atmospheric CO2 and reinforce the greenhouse-warming effect. In this paper,the commonly used methods of measuring soil respiration were summarized and compared in particular. Factors affecting soil respiration, such as natural conditionts and human activities, were discussed. Finally,four primary methods have been reviewed to distinguish root respiration from total soil respiration including components method,root exclusion method,root biomass ratiocination method and isotope method. The paper suggested that the more studies are necessary in the future work.

Key words: grassland carbon cycle, root respiration, soil respiration