土壤微生物与根系呼吸作用影响因子分析  

Affecting factors of soil microorganism and root respiration

作　　者：贾丙瑞[1] 周广胜[1] 王风玉[1] 王玉辉[1] 

机构地区：[1]中国科学院植物研究所植被数量生态学重点实验室

出　　处：《应用生态学报》2005年第8期1547-1552,共6页Chinese Journal of Applied Ecology

基　　金：国家重点基础研究发展规划项目(G1999043407);中国科学院知识创新工程项目(KZCX1-SW-01-12;KSCX2-1-07);国家自然科学基金资助项目(49905005;30028001;30300049;40231018).

摘　　要：土壤呼吸作用作为陆地生态系统碳循环的重要组成部分,是当前碳循环研究中的热点问题.对于土壤呼吸作用主要组成部分土壤微生物呼吸作用和根系呼吸作用影响因子的研究,有助于准确地评估全球碳收支.本文从气候、土壤、植被及地表覆被物、大气CO2浓度、人为干扰等方面综述了土壤微生物呼吸作用和根系呼吸作用的主导影响因子,指出这些影响因子不仅直接或间接地影响土壤微生物呼吸作用和根系呼吸作用,而且它们之间相互作用、相互影响,且各影响因子的地位和作用会随时空尺度变化发生相应改变.在此基础上,论文提出了未来土壤呼吸作用的研究重点.Soil respiration is an important part of the carbon cycle in terrestrial ecosystems, and its contribution to the global carbon budget has been the focus of wide concern. Researches on the affecting factors of soil microorganism and root respiration, the main components of soil respiration, contribute to the understanding of the role of soil respiration on global carbon cycle, and to the accurate evaluation of global carbon budget. This paper reviewed the direct and indirect affecting factors of soil microorganism and root respiration, including climate factors, soil properties, vegetation and litterfall, air CO2 concentration, and human activities. These affecting factors were interactive, and their contributions to soll microorganism and root respiration varied in temporal and spatial scales. The study on natural and anthropogenic factors of soil microorganism and root respiration was emphasized, and some related research tasks in the future were also proposed.

关 键 词：土壤呼吸作用 微生物呼吸作用 根呼吸作用 影响因子 

分 类 号：S154.3[农业科学—土壤学]