YAN Mei-jie,SHI Wei-yu,DU Sheng.Review and Prospect on the Methods of Soil Respiration Measurement[J].Research of Soil and Water Conservation,2010,17(06):148-152,157.
土壤呼吸测定方法述评与展望
- Title:
- Review and Prospect on the Methods of Soil Respiration Measurement
- Keywords:
- soil respiration measurement; chamber method; carbon cycle
- 分类号:
- S152.5
- 摘要:
- 土壤呼吸可运用微气象学法和气室法进行测定，但气室法因其直接测定土壤表层释放的CO2而最为引人注目。气室法按其测定原理又可分为封闭型气室法和开放型气室法。该文重点介绍各种气室法的原理、特点及应用条件，并对近年来土壤呼吸研究方法的发展作了简要述评。过去常用的静态碱液吸收法、静态密闭气室法和动态密闭气室法逐渐被可自动开闭的动态气室法所代替，以LI-COR公司最新推出的设备为代表，预料将在今后一个时期成为该领域广泛使用的测定方法。由于土壤呼吸是全球碳循环的一个重要流通途径，是大气CO2的重要来源之一，典型生态系统中土壤呼吸及其各组分对环境因子的响应特征将是一个重要研究课题，这不仅关系到对生态系统生产量的正确测算，而且关系到科学把握全球变化环境下CO2的排放动态。
- Abstract:
- Soil respiration can be measured by two types of methods, i.e., micrometeorological method and chamber method. Chamber method has drawn much attention as the CO2 efflux from soil surface is measured directly by the technique. There are closed chamber and open chamber, both of which can be further divided into several kinds. In this paper, we mainly presented the principles, specialties, and application requirements for various chamber methods, and briefly commented on the development of soil respiration measurement in recent years. The static alkali absorption method, static closed-chamber method and dynamic closed-chamber method, which were widely used in the past, tend to be replaced by automatic open/closed chambers. It is expected that the newly developed automatic chambers, such as those manufactured by LI-COR, will be commonly used in the coming years. As soil respiration is one of the main pathways in the global carbon cycle and contributes to an important source for atmospheric CO2, the responses of soil respiration components to environmental factors in typical ecosystems will be extensively investigated. These researches will contribute not only to the calculation of ecosystem production, but also to the monitoring of CO2 emission dynamics under the condition of global changes.
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备注/Memo
收稿日期:2010-6-22
基金项目:中国科学院知识创新工程重要方向项目（kzcx2-yw-BR-02）
作者简介:闫美杰（1965- ），女，助理研究员，主要从事植物生态学、生态环境经济等领域的研究。E-mail：yanmj@ms.iswc.ac.cn