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<p>Forest management plans are central to regulations governing logging concessions in the Congo Basin, yet their long-term effectiveness remains uncertain. Here, we combine annual satellite-derived forest change data with administrative concession records and exploit variation in the timing of plan validation across five countries to assess how validation influences forest-cover dynamics from 2000 to 2020 using counterfactual impact-evaluation methods. We find that concessions with validated plans experience a gradual, sustained decline in forest loss, averaging 100 &#xa0;± 44 hectares per year, equivalent to a 47% reduction relative to concessions operating without validated plans. Effects persist for up to 19 years and occur in concessions with and without independent third-party certification. These results indicate that accelerating the validation and implementation of forest management plans can substantially reduce forest disturbance in the Congo Basin.</p>

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Forest management plan validation gradually reduces forest loss in Congo Basin concessions

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月23日

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  • Kenneth Houngbedji,
  • Marc Bouvier,
  • Antoine Leblois,
  • Jean-Sylvestre Makak,
  • Benoit Mertens

摘要

Forest management plans are central to regulations governing logging concessions in the Congo Basin, yet their long-term effectiveness remains uncertain. Here, we combine annual satellite-derived forest change data with administrative concession records and exploit variation in the timing of plan validation across five countries to assess how validation influences forest-cover dynamics from 2000 to 2020 using counterfactual impact-evaluation methods. We find that concessions with validated plans experience a gradual, sustained decline in forest loss, averaging 100  ± 44 hectares per year, equivalent to a 47% reduction relative to concessions operating without validated plans. Effects persist for up to 19 years and occur in concessions with and without independent third-party certification. These results indicate that accelerating the validation and implementation of forest management plans can substantially reduce forest disturbance in the Congo Basin.