|Table of Contents|

A review of methods for measuring the soil greenhouse gases *(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

2019 05
Research Field:
Publishing date:


A review of methods for measuring the soil greenhouse gases *
ZHANG Zhenchao1 2 WANG Jinniu3** SUN Jian2 JIANG Haibo3 & WEI Tianxing1
1 School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
2 Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
3 Chengdu Institute of Biology , Chinese Academy of Sciences, Chengdu 610041, China
soil greenhouse gas measurement methods principles gas detection applicability uncertainty

Differences across diverse methods induce many uncertainties for soil greenhouse gas measurement, therefore, comprehensive comparison and evaluation of various methods will be helpful to improve the accuracy of soil greenhouse gas measurement, which is vital to accurately measure greenhouse gas emission in soil for better understanding their mechanisms of source and sink, formulating emission inventory and emission reduction measures. According to different principles, the common soil greenhouse gas observation methods were divided into box/alkali absorption method, box/gas chromatography, box/absorption spectrometry, micro-meteorology method, soil concentration profile method, stable isotope method, etc. The principle, advantage and disadvantage, uncertainty, application scope, and development history about measurement methods of soil greenhouse gas were systematically expounded via sorting out literatures on greenhouse gas measurement. Almost every method has its advantages and limitations, for example, the box method is simple to operate and widely used at present, but the closed static box method has certain disturbance to observations. Almost all the micrometeorological methods have extremely strict requirements for underlying surface. Although the isotope method is more accurate, it is too expensive to be widely used. The traditional measurement methods have many problems, such as complicated experimental process, high cost, low precision, non-in-situ and limited parameters. In the future, the developments of soil greenhouse gas measurement instruments would pay more attention for the combination of new technology, for example, the CW-QCL combines with the TDLAS and WMS technique, along the direction of combination of in-situ condition, for a long time, all parameters, high precision, portable, integration, automation and remote control.




Last Update: 2019-03-15