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| Accumulation characteristics of organic carbon in kaolin-based artificial biological crusts |
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Received:April 12, 2024
Revised:April 12, 2024
Accepted:May 21, 2024
Published Online:March 24, 2025
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| DOI： |
| KeyWord:kaolin , biocrust , soil;organic carbo , chlorophyll;fluorescence parameters , microbial;community |
| Author | Institution |
| LI Xinyu |
School of Resources and Environmental Engineering,Wuhan University of Technology |
| LI Yuqing |
School of Resources and Environmental Engineering,Wuhan University of Technology |
| ZENG Fanjian |
School of Resources and Environmental Engineering,Wuhan University of Technology |
| ZHANG Cui |
School of Resources and Environmental Engineering,Wuhan University of Technology |
| XIA Ling |
School of Resources and Environmental Engineering,Wuhan University of Technology |
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| Abstract: |
| Due to the scarcity of biological resources, desert areas are unable to achieve long-term carbon sequestration. Biological crust is a pioneer organism in desert areas and plays an important role in long-term carbon sequestration. However, the development of natural biological crust is slow. Clay plays an important role in the formation and development of biological crusts, and has a strong protective effect on soil organic carbon. Therefore, this experiment explores the effect and mechanism of adding kaolin on the organic carbon of soil biological crust system, aiming to provide new solutions for the long-term carbon sink in desert areas. Through testing particle size, specific surface area and pore volume, chlorophyll a, chlorophyll fluorescence, microbial community, and soil organic carbon (SOC), it was found that the addition of kaolin changed the physicochemical properties and microbial community structure of the system, promoted the growth of biochar, and strengthened the protective effect of the system on SOC. After 112 days of cultivation, it was found that the accumulation of SOC in the kaolin based biological crust system increased to 145% of the algae inoculation group. |
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