Artificial humic acid facilitates biological carbon sequestration under 
freezing-thawing conditions

Tang, Chunyu; Cheng, Kui; Liu, Bailiang; Antonietti, Markus; Yang, Fan

doi:10.1016/j.scitotenv.2022.157841

Item

ITEM ACTIONSEXPORT

Add to Basket

Please note that a newer version of this item is available:
https://pure.mpg.de/pubman/item/item_3398486_3

DetailsSummary

Released

Journal Article

Artificial humic acid facilitates biological carbon sequestration under freezing-thawing conditions

MPS-Authors

Tang, Chunyu
NEAU-MPICI, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

Cheng, Kui
NEAU-MPICI, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

Liu, Bailiang
NEAU-MPICI, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

/persons/resource/persons1057

Antonietti, Markus
Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

/persons/resource/persons238943

Yang, Fan
NEAU-MPICI, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Tang, C., Cheng, K., Liu, B., Antonietti, M., & Yang, F. (2022). Artificial humic acid facilitates biological carbon sequestration under freezing-thawing conditions. Science of the Total Environment, 849: 157841. doi:10.1016/j.scitotenv.2022.157841.

Cite as: https://hdl.handle.net/21.11116/0000-000A-D393-1

Abstract

Freezing-thawing events contribute to the accumulation of soil organic matter and the formation of high fertility black soil. On this base, we explore the influence of the combination of liquid artificial humic acid (LA-HA) and freezing-thawing events on strengthening carbon sequestration in soils. The measurements of the total organic carbon (TOC) and dissolved organic carbon (DOC) content illustrate that the applications of LA-HA indeed largely enhanced the persistent carbon reservoirs during freezing-thawing cycles, and the highest TOC net increment was found as up to 4000 mg/kg (0.36 wt% C with the control treatment versus 0.79 wt% C with 300 mL/kg LA-HA (3LA-HA) treatment after 10 freezing-thawing cycles). Spectral analysis reveals that LA-HA treatments accelerated the formation of additional humic substances under freezing-thawing events, i.e., the transformation of labile carbon to resistant carbon. Finally, the results of highthroughput sequencing corresponding to cbbL gene demonstrate that 3LA-HA functioned to optimizing the community structure of carbon sequestration bacteria and improving the dominant position of part bacteria with strong carbon fixation ability to reduce soil carbon loss after thawing, e.g., Mycolicibacterium gadium and Starkeya novella.