Yongen Min

Northeast Normal University

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Xiaofei Yu

Northeast Normal University

Yuanchun Zou

Northeast Institute of Geography and Agroecology

Shanshan Ding

Fujian Agriculture and Forestry University

Yong Wang

Northeast Normal University

Ying Cai

Taizhou Vocational and Technical College

Lianxi Sheng

Northeast Normal University

Hongfeng Bian

Northeast Normal University

Tong Lu

China Agricultural University

Pengcheng Su

Zhejiang Sci-Tech University

Xiaofei Yu

Binzhou University

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Northeast Normal University

Chinese Academy of Sciences

Northeast Institute of Geography and Agroecology

Nanjing University

University of Chinese Academy of Sciences

Harbin Medical University

Institute of Wetland Research

National Agriculture and Food Research Organization

National Institute for Agro-Environmental Sciences

Institute of Soil Science

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Changes in soil dissolved organic matter optical properties during peatland succession

Ecological Indicators (2022)

Jianwei Li Liyuan Zhao Ming Li Yongen Min Fusen Zhan

Dissolved organic matter (DOM) is the most active component in the soil environment. Understanding the chemical diversity of DOM and the interaction of the physicochemical properties of the soil are key to managing peatland under succession. In this study, we aimed to understand the effects of peatland succession on soil DOM. We collected soil samples (topsoil: 0–10 cm, subsoil: 10–20 cm) from peatland during different stages of peatland succession in mid–high latitude northern regions, determined the changes in quantity and quality of DOM using fluorescence spectroscopy and parallel factor analysis. We found that peatland succession altered the effectiveness of soil nutrients and water content. During the succession, the content of humus-like substances in the DOM of the topsoil increased and the content of protein-like material decreased, whereas the content of substances in the subsoil remained stable. pH was the key factor affecting the change in the composition of the DOM in the topsoil during peatland succession. The variation of DOM in the subsoil may be related to the vegetation composition. The results suggest that fluorescent DOM components respond significantly to changes in peatland succession, and DOM properties are driven by soil pH and vegetation composition during peatland succession. In conclusion, our results reveal the optical changes and factors that influence DOM in peatlands under succession. This suggests that DOM can be modified by simultaneous changes of the physicochemical properties in the soil and the vegetation cover.

Subsoil

Topsoil

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Humus

10.1016/j.ecolind.2022.109386

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Citations (16)

Shrubification and snow removal have an antagonistic effect on the accumulation of rhizosphere organic carbon components in peatlands

Soil Biology and Biochemistry (2023)

Ying Cai Xiaofei Yu Yuanchun Zou Shanshan Ding Yongen Min

Soil carbon

10.1016/j.soilbio.2023.109256