Networks of mineral-associated organic matter fractions in forest ecosystems

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Bin Niu
  • Qiuyu Chen
  • Hongzhe Jiao
  • Xiaoqin Yang
  • Ming Shao
  • Jian Wang
  • Guicai Si
  • Tianzhu Lei
  • Yibo Yang
  • Gengxin Zhang
  • Georg Guggenberger

Research Organisations

External Research Organisations

  • Chinese Academy of Sciences (CAS)
  • University of the Chinese Academy of Sciences (UCAS)
  • University of Manchester
  • China West Normal University
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Details

Original languageEnglish
Article number165555
JournalScience of the Total Environment
Volume898
Early online date15 Jul 2023
Publication statusPublished - 10 Nov 2023

Abstract

Mineral-associated organic matter (MAOM), the largest soil carbon pool, is formed through a series of organo-mineral interaction mechanisms. However, different organo-mineral fractions relevant to specific stabilization mechanisms and their response to environmental variables are poorly understood, which hinders accurate prediction of MAOM preservation under climate change. We applied sequential chemical extraction to separate MAOM into different organo-mineral fractions. To assess of response of different organo-mineral fractions to climate change, alpine forest soils with high environmental sensitivity along a controlled environmental gradient were selected. Residual OM and weakly adsorbed OM were the primary organo-mineral fractions, accounting for approximately 45.1–67.7 % and 16.4–30.6 %, respectively, of the total organic carbon (TOC). Climate exerted considerable indirect effects on the preservation of organo-mineral fractions through weathering and edaphic and biotic variables. Moreover, organo-mineral fractions were closely associated with metal cations (mainly Fe3+/Al3+) and secondary minerals, forming complex networks. Water-soluble OM (WSOM), weakly adsorbed OM and Fe/Al oxyhydroxides-stabilized OM were tightly linked, occupying the central position of the networks, and were closely related to soil pH, moisture and prokaryotic composition, indicating that edaphic and biotic factors might play important roles in maintaining the network structure and topology. In addition, Fe/Al-OM complexes, oxyhydroxides-stabilized OM and residual OM in the network were greatly impacted by climate and weathering factors, including precipitation, temperature and the plagioclase index of alteration (PIA). The complex network among organo-mineral fractions sheds light on MAOM dynamic stabilization for better predicting MAOM preservation under climate change.

Keywords

    Climate change, Forest soil, Mineral-associated organic matter, Network, Organo-mineral fractions

ASJC Scopus subject areas

Sustainable Development Goals

Cite this

Networks of mineral-associated organic matter fractions in forest ecosystems. / Niu, Bin; Chen, Qiuyu; Jiao, Hongzhe et al.
In: Science of the Total Environment, Vol. 898, 165555, 10.11.2023.

Research output: Contribution to journalArticleResearchpeer review

Niu, B, Chen, Q, Jiao, H, Yang, X, Shao, M, Wang, J, Si, G, Lei, T, Yang, Y, Zhang, G & Guggenberger, G 2023, 'Networks of mineral-associated organic matter fractions in forest ecosystems', Science of the Total Environment, vol. 898, 165555. https://doi.org/10.1016/j.scitotenv.2023.165555
Niu, B., Chen, Q., Jiao, H., Yang, X., Shao, M., Wang, J., Si, G., Lei, T., Yang, Y., Zhang, G., & Guggenberger, G. (2023). Networks of mineral-associated organic matter fractions in forest ecosystems. Science of the Total Environment, 898, Article 165555. https://doi.org/10.1016/j.scitotenv.2023.165555
Niu B, Chen Q, Jiao H, Yang X, Shao M, Wang J et al. Networks of mineral-associated organic matter fractions in forest ecosystems. Science of the Total Environment. 2023 Nov 10;898:165555. Epub 2023 Jul 15. doi: 10.1016/j.scitotenv.2023.165555
Niu, Bin ; Chen, Qiuyu ; Jiao, Hongzhe et al. / Networks of mineral-associated organic matter fractions in forest ecosystems. In: Science of the Total Environment. 2023 ; Vol. 898.
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title = "Networks of mineral-associated organic matter fractions in forest ecosystems",
abstract = "Mineral-associated organic matter (MAOM), the largest soil carbon pool, is formed through a series of organo-mineral interaction mechanisms. However, different organo-mineral fractions relevant to specific stabilization mechanisms and their response to environmental variables are poorly understood, which hinders accurate prediction of MAOM preservation under climate change. We applied sequential chemical extraction to separate MAOM into different organo-mineral fractions. To assess of response of different organo-mineral fractions to climate change, alpine forest soils with high environmental sensitivity along a controlled environmental gradient were selected. Residual OM and weakly adsorbed OM were the primary organo-mineral fractions, accounting for approximately 45.1–67.7 % and 16.4–30.6 %, respectively, of the total organic carbon (TOC). Climate exerted considerable indirect effects on the preservation of organo-mineral fractions through weathering and edaphic and biotic variables. Moreover, organo-mineral fractions were closely associated with metal cations (mainly Fe3+/Al3+) and secondary minerals, forming complex networks. Water-soluble OM (WSOM), weakly adsorbed OM and Fe/Al oxyhydroxides-stabilized OM were tightly linked, occupying the central position of the networks, and were closely related to soil pH, moisture and prokaryotic composition, indicating that edaphic and biotic factors might play important roles in maintaining the network structure and topology. In addition, Fe/Al-OM complexes, oxyhydroxides-stabilized OM and residual OM in the network were greatly impacted by climate and weathering factors, including precipitation, temperature and the plagioclase index of alteration (PIA). The complex network among organo-mineral fractions sheds light on MAOM dynamic stabilization for better predicting MAOM preservation under climate change.",
keywords = "Climate change, Forest soil, Mineral-associated organic matter, Network, Organo-mineral fractions",
author = "Bin Niu and Qiuyu Chen and Hongzhe Jiao and Xiaoqin Yang and Ming Shao and Jian Wang and Guicai Si and Tianzhu Lei and Yibo Yang and Gengxin Zhang and Georg Guggenberger",
note = "Funding Information: This research was supported by grants from the Second Tibetan Plateau Scientific Expedition and Research Program (STEP) (2019QZKK0503), the National Natural Science Foundation of China (41871066, 41471055) and the Open Research Fund from the Key Laboratory of Forest Ecology in Tibet Plateau (Tibet Agricultural & Animal Husbandry University), Ministry of Education, China (XZA-JYBSYS-2023-01). We also thank the Motuo Observation and Research Center for Earth Landscape and Earth System, Chinese Academy of Sciences; and the Southeast Tibet Observation and Research Station for the Alpine Environment, Chinese Academy of Sciences (SETORS), for field sampling. ",
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TY - JOUR

T1 - Networks of mineral-associated organic matter fractions in forest ecosystems

AU - Niu, Bin

AU - Chen, Qiuyu

AU - Jiao, Hongzhe

AU - Yang, Xiaoqin

AU - Shao, Ming

AU - Wang, Jian

AU - Si, Guicai

AU - Lei, Tianzhu

AU - Yang, Yibo

AU - Zhang, Gengxin

AU - Guggenberger, Georg

N1 - Funding Information: This research was supported by grants from the Second Tibetan Plateau Scientific Expedition and Research Program (STEP) (2019QZKK0503), the National Natural Science Foundation of China (41871066, 41471055) and the Open Research Fund from the Key Laboratory of Forest Ecology in Tibet Plateau (Tibet Agricultural & Animal Husbandry University), Ministry of Education, China (XZA-JYBSYS-2023-01). We also thank the Motuo Observation and Research Center for Earth Landscape and Earth System, Chinese Academy of Sciences; and the Southeast Tibet Observation and Research Station for the Alpine Environment, Chinese Academy of Sciences (SETORS), for field sampling.

PY - 2023/11/10

Y1 - 2023/11/10

N2 - Mineral-associated organic matter (MAOM), the largest soil carbon pool, is formed through a series of organo-mineral interaction mechanisms. However, different organo-mineral fractions relevant to specific stabilization mechanisms and their response to environmental variables are poorly understood, which hinders accurate prediction of MAOM preservation under climate change. We applied sequential chemical extraction to separate MAOM into different organo-mineral fractions. To assess of response of different organo-mineral fractions to climate change, alpine forest soils with high environmental sensitivity along a controlled environmental gradient were selected. Residual OM and weakly adsorbed OM were the primary organo-mineral fractions, accounting for approximately 45.1–67.7 % and 16.4–30.6 %, respectively, of the total organic carbon (TOC). Climate exerted considerable indirect effects on the preservation of organo-mineral fractions through weathering and edaphic and biotic variables. Moreover, organo-mineral fractions were closely associated with metal cations (mainly Fe3+/Al3+) and secondary minerals, forming complex networks. Water-soluble OM (WSOM), weakly adsorbed OM and Fe/Al oxyhydroxides-stabilized OM were tightly linked, occupying the central position of the networks, and were closely related to soil pH, moisture and prokaryotic composition, indicating that edaphic and biotic factors might play important roles in maintaining the network structure and topology. In addition, Fe/Al-OM complexes, oxyhydroxides-stabilized OM and residual OM in the network were greatly impacted by climate and weathering factors, including precipitation, temperature and the plagioclase index of alteration (PIA). The complex network among organo-mineral fractions sheds light on MAOM dynamic stabilization for better predicting MAOM preservation under climate change.

AB - Mineral-associated organic matter (MAOM), the largest soil carbon pool, is formed through a series of organo-mineral interaction mechanisms. However, different organo-mineral fractions relevant to specific stabilization mechanisms and their response to environmental variables are poorly understood, which hinders accurate prediction of MAOM preservation under climate change. We applied sequential chemical extraction to separate MAOM into different organo-mineral fractions. To assess of response of different organo-mineral fractions to climate change, alpine forest soils with high environmental sensitivity along a controlled environmental gradient were selected. Residual OM and weakly adsorbed OM were the primary organo-mineral fractions, accounting for approximately 45.1–67.7 % and 16.4–30.6 %, respectively, of the total organic carbon (TOC). Climate exerted considerable indirect effects on the preservation of organo-mineral fractions through weathering and edaphic and biotic variables. Moreover, organo-mineral fractions were closely associated with metal cations (mainly Fe3+/Al3+) and secondary minerals, forming complex networks. Water-soluble OM (WSOM), weakly adsorbed OM and Fe/Al oxyhydroxides-stabilized OM were tightly linked, occupying the central position of the networks, and were closely related to soil pH, moisture and prokaryotic composition, indicating that edaphic and biotic factors might play important roles in maintaining the network structure and topology. In addition, Fe/Al-OM complexes, oxyhydroxides-stabilized OM and residual OM in the network were greatly impacted by climate and weathering factors, including precipitation, temperature and the plagioclase index of alteration (PIA). The complex network among organo-mineral fractions sheds light on MAOM dynamic stabilization for better predicting MAOM preservation under climate change.

KW - Climate change

KW - Forest soil

KW - Mineral-associated organic matter

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