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Responses of carbon storage to thinning intensity of Larix principis-rupprechtii Mayr

Author

Listed:
  • Kuangji Zhao

    (Sichuan Agricultural University)

  • Yifei Lin

    (Sichuan Agricultural University)

  • Shilong He

    (Sichuan Agricultural University)

  • Chuan Fan

    (Sichuan Agricultural University)

  • Shun Gao

    (Sichuan Agricultural University)

  • Fang He

    (Sichuan Agricultural University)

  • Ziteng Luo

    (Sichuan Agricultural University)

  • Guirong Hou

    (Sichuan Agricultural University)

  • Gang Chen

    (Sichuan Agricultural University)

  • Zhongkui Jia

    (Beijing Forestry University)

  • Xianwei Li

    (Sichuan Agricultural University)

Abstract

In the context of global climate change, enhancing the carbon sequestration potential of forest ecosystems through thinning practices is crucial. This study assessed the effects of five thinning intensities on carbon storage in various layers of forest ecosystems in young-aged, middle-aged, and near-mature Larix principis-rupprechtii Mayr plantations. The soil physicochemical properties, nutrient content, and enzymatic activities were analyzed to reveal the above mechanisms. Additionally, the variation of arbor carbon storage across different diameter at breast height (DBH) classes were analyzed over time by measuring at various intervals before and after thinning during three stand stages. While arbor carbon storage decreased with increasing thinning in middle-aged and near-mature forests, the loss of carbon storage decreased over time. The net change of arbor carbon storage in the large DBH class in thinned plots was higher than in control plots across all stand stages, but notable increases in the middle DBH class were only observed in young-aged forests under low-intensity thinning (15–20%). From 2014 to 2019, the growth rate of arbor carbon storage under low-intensity thinning (15–20%) surpassed that of the control. Thinning enhanced litter, soil, and total ecosystem carbon storage, displaying a rough “N” shaped pattern as thinning intensity increased. Total potassium (TK) was positively correlated with arbor carbon storage across all stand stages, whereas polyphenol oxidase (PPO) activity was significant only in middle-aged and near-mature forests. Each stand stage showed a significant positive correlation between carbon storage and both the carbon-to-nitrogen (C/N) ratio in the litter layer and urease (URE) activity in the soil layer. In conclusion, although 35% thinning intensity showed a beneficial effect on total ecosystem carbon storage, low-intensity thinning (15–20%) was more conducive to arbor carbon growth.

Suggested Citation

  • Kuangji Zhao & Yifei Lin & Shilong He & Chuan Fan & Shun Gao & Fang He & Ziteng Luo & Guirong Hou & Gang Chen & Zhongkui Jia & Xianwei Li, 2025. "Responses of carbon storage to thinning intensity of Larix principis-rupprechtii Mayr," Mitigation and Adaptation Strategies for Global Change, Springer, vol. 30(5), pages 1-23, June.
    • Handle: RePEc:spr:masfgc:v:30:y:2025:i:5:d:10.1007_s11027-025-10225-w
    DOI: 10.1007/s11027-025-10225-w
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    References listed on IDEAS

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    1. Petros Ganatsas & Marianthi Tsakaldimi & Theodoros Karydopoulos & Alexandros Papaemannuil & Sotirios Papadopoulos, 2024. "Long-term effect of different forest thinning intensity on carbon sequestration rates and potential uses in climate change mitigation actions," Mitigation and Adaptation Strategies for Global Change, Springer, vol. 29(1), pages 1-22, January.
    2. Cao, Jianjun & Zhang, Xiaofang & Deo, Ravinesh & Gong, Yifan & Feng, Qi, 2018. "Influence of stand type and stand age on soil carbon storage in China’s arid and semi-arid regions," Land Use Policy, Elsevier, vol. 78(C), pages 258-265.
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