The non-autogenic carbon accumulation process in a peatland of the Changbai Mountains and its response to climate changes during the Late Holocene

Liu, Wenkai, Zhang, Mingming, Chambers, Frank M ORCID: https://orcid.org/0000-0002-0998-2093 and Gao, Yuzhu (2025) The non-autogenic carbon accumulation process in a peatland of the Changbai Mountains and its response to climate changes during the Late Holocene. Palaeogeography, Palaeoclimatology, Palaeoecology, 680. art: 113326. doi:10.1016/j.palaeo.2025.113326

Text 15463 Liu, Zhang, Chambers, Gao (2025) The non-autogenic carbon accumulation process in a peatland of the Changbai Mountains and its response to climate changes during the Late Holocene.pdf - Accepted Version Restricted to Repository staff only until 15 December 2026. (Publisher Embargo). Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (3MB)

Abstract

Peatland carbon accumulation is an important process in the global carbon cycle, yet autogenic processes such as long-term decay and ecosystem succession often obscure the climatic impact. To isolate climate controls more effectively, we investigated the Zhibian peatland in the Changbai Mountains, which is located at the southern margin of northern peatlands and is strongly influenced by the East Asian monsoon (EASM). This climatically sensitive setting provides an opportunity to examine non-autogenic impacts on peat carbon dynamics. In this study, we used conceptual models to reconstruct the non-autogenic carbon accumulation rate (NCAR) at both millennium and decades time scales. Based on the results, the analysis of plant fossils and basic physicochemical indicators were used to establish the characteristics of peat carbon accumulation stages. Subsequently, we analyzed the sensitivity of peatland carbon accumulation to temperature and hydroclimate changes at different time scales. The research results indicate that carbon accumulation in peatlands at the millennium scale is driven by a combination of solar radiation, temperature, and hydroclimate. Changes in solar radiation, temperature and precipitation alter primary productivity and decomposition processes, thereby affecting the NCAR in the Zhibian peatland. For the past few decades, water conditions seem to be a key factor affecting the NCAR. Continuous warming and reduced water availability may lead to an increase in peat decomposition, thereby reducing NCAR and lead to the transformation of peatlands from carbon sinks to carbon sources.

Item Type:	Article
Uncontrolled Keywords:	Northeast China; Non-autogenic carbon accumulation rate; Late Holocene; Climatic changes
Subjects:	G Geography. Anthropology. Recreation > GB Physical geography Q Science > Q Science (General) Q Science > QH Natural history
Divisions:	Schools and Research Institutes > School of Education, Health and Sciences
Depositing User:	Anna Kerr
Date Deposited:	23 Oct 2025 10:06
Last Modified:	23 Oct 2025 10:15
URI:	https://eprints.glos.ac.uk/id/eprint/15463

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