Practice for In Situ Measurement of CO₂ Flux at Soils Profiles in Arid Areas

Abstract:

An approach is described for the in situ measurement of CO₂ flux at various depths in arid soil. In this method, a sampling tube is inserted to the desired soil depth in a pre-drilled hole, and an infrared CO₂ gas analyzer connected to the sampling tube is used to quantify CO₂ (based on absorption of CO₂ by infrared rays). In a preliminary test, the method was used to quantify CO₂ concentration and flux in an arid grassland soil. The results indicated that it could be used to quantify CO₂ flux in soil from 0–200 cm depths , and should be useful for estimating CO₂ flux and storage at different soil depths, for estimating the change in CO₂ emission from soil caused by change in land-use/land-cover, for assessing the rate of restoration of soil fertility and other soil properties in arid soils, and for monitoring leakage from geological storage of CO₂.

• Periodical: Advanced Materials Research (Volumes 1010-1012)
• Pages: 442-445
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1010-1012.442
• Online since: August 2014
• Authors: Xiang Yang Sun, Xiao Bing Liu, Cheng Da Gao*
• Keywords: Approach, Device, Drought Environment, In Place, Survey of Carbon Dioxide Emission

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