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Scientia Silvae Sinicae ›› 2026, Vol. 62 ›› Issue (7): 240-252.doi: 10.11707/j.1001-7488.LYKX20250728

• Reviews • Previous Articles    

Research Progress on the Effects of Thinning on Forest Soil Organic Carbon

Xiaoting Wu1,2,Jiejie Jiao3,4,Chonghua Xu1,2,Fengcai He1,2,Xia Xu1,2,*()   

  1. 1. Zhejiang Key Laboratory of Carbon Sequestration and Emission Reduction in Agriculture and Forestry Zhejiang A & F University Hangzhou 311300
    2. College of Environment and Resources/College of Carbon Neutrality, Zhejiang A & F University Hangzhou 311300
    3. Zhejiang Hangzhou Urban Ecosystem National Positioning Observation Research Station Hangzhou 310023
    4. Institute of Ecology and Carbon Sequestration , Zhejiang Academy of Forestry Hangzhou 310023
  • Received:2025-12-04 Online:2026-07-10 Published:2026-07-16
  • Contact: Xia Xu E-mail:xuxia.1982@outlook.com

Abstract:

Forest soil organic carbon is an important component of the terrestrial ecosystem carbon pool, and its dynamics are closely linked to the ecosystem carbon balance and the response capability to climate change. As an important forest management practice, thinning can influence the input, transformation, and stabilization of soil organic carbon by altering stand structure, microenvironmental conditions, and plant-microbe interactions. In recent years, a large number of studies have examined the effects of thinning on forest soil organic carbon, but the relevant knowledge remains scattered. This review systematically summarizes the response patterns of soil organic carbon under different thinning intensities, recovery stages, and forest types, as well as the underlying regulatory mechanisms. Existing studies show that light thinning generally has little effect on soil organic carbon content and stock, moderate thinning is overall conducive to the accumulation of soil organic carbon content and stock, whereas heavy thinning may either increase or decrease soil organic carbon content and stock. In the short term after thinning, soil organic carbon content and stock often decline, whereas over the medium to long term they tend to increase continuously or gradually approach a new stable state. In coniferous forests and coniferous-broadleaf mixed forests, soil organic carbon content and stock usually increase or show no significant change following thinning, whereas in broadleaf forests they may increase, decrease, or remain unchanged. These differences are mainly related to the combined regulation of carbon input and output processes in forest soils following thinning. Future research should strengthen the integration of long-term field observations with modeling, optimize thinning regimes under different site and management conditions, and deepen research on the coupling between soil carbon sequestration and ecosystem multifunctionality, so as to better clarify the mechanisms by which thinning affects forest soil organic carbon.

Key words: forest management, thinning, soil organic carbon

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