Abstract
In order to observe CO2 characteristics in the unsaturated zone of loess tableland and further understand the carbon cycle, a series of tubes for gas monitoring and sampling were installed in an approximately 90-m deep Qiushe loess section of Lingtai County, Northwestern China. The results show that the concentration of CO2 was higher in loess than in the atmosphere, reaching a maximum of 6970 μmol·mol−1. CO2 concentrations in loess were higher in summer than in winter. The CO2 in loess was related to organic carbon decomposed by microbes, and to the CaCO3–H2O–CO2 system in the interface between the saturated and unsaturated zones.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
