Carbonate Mineral Dissolution and Its Carbon Sink Effect in Chinese Loess

Mingyu Shao, Muhammad Adnan, Liankai Zhang (), Pengyu Liu, Jianhua Cao and Xiaoqun Qin
Additional contact information
Mingyu Shao: Institute of Karst Geology, CAGS/Key Laboratory of Karst Ecosystem and Rocky Desertification, Ministry of Natural Resources, Guilin 541004, China
Muhammad Adnan: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
Liankai Zhang: Kunming Comprehensive Survey Center of Natural Resources, China Geological Survey, Kunming 650111, China
Pengyu Liu: Institute of Karst Geology, CAGS/Key Laboratory of Karst Ecosystem and Rocky Desertification, Ministry of Natural Resources, Guilin 541004, China
Jianhua Cao: Institute of Karst Geology, CAGS/Key Laboratory of Karst Ecosystem and Rocky Desertification, Ministry of Natural Resources, Guilin 541004, China
Xiaoqun Qin: Institute of Karst Geology, CAGS/Key Laboratory of Karst Ecosystem and Rocky Desertification, Ministry of Natural Resources, Guilin 541004, China

Land, 2022, vol. 12, issue 1, 1-17

Abstract: The relationship between the source and sink of atmospheric CO 2 has always been a widely discussed issue in global climate change research. Recent studies revealed that the chemical weathering of carbonate rocks contributed to 1/3 (~0.5 Pg C/yr) of the missing carbon sinks (MCS) globally, and there are still 2/3 of MCS (~0.5 Pg C/yr) that need to be explored. As one of the main overburdened parts of the earth, loess is one of the important driving factors for atmospheric CO 2 consumption. Here, we elaborated on the dissolution process and the carbon sink effect from carbonate and silicate minerals in loess. The relationship between carbonate dissolution and carbon source/sink is elucidated, and the mechanism of carbon sink formation from secondary carbonates in loess is clarified. Additionally, the commonly used methods for the identification of primary and secondary carbonates are summarized, and the methods for the study of loess carbon sinks and the influencing factors of loess carbon sinks are also revealed. Based on the research results and progress interpretations, the prospects of loess carbon sinks are discussed to provide a scientific basis for further research on loess carbon sinks.

Keywords: loess; carbonate minerals; atmospheric CO 2; carbon sink effect (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2073-445X/12/1/133/pdf (application/pdf)
https://www.mdpi.com/2073-445X/12/1/133/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jlands:v:12:y:2022:i:1:p:133-:d:1021601

Access Statistics for this article

Land is currently edited by Ms. Carol Ma

More articles in Land from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().