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<p>Mediterranean forest ecosystems are increasingly threatened by wildfires, compromising slope stability and delaying natural regeneration. In these contexts, Nature-based Solutions (NbS) represent sustainable approaches for post-fire restoration. This study evaluated the short- to medium-term structural durability and ecological effectiveness of fire-affected logs repositioned as erosion barriers after a large wildfire in a <i>Pinus radiata</i> stand in Southern Italy. The objectives were to assess the mechanical degradation of burnt logs using non-destructive technologies, to develop a predictive decay model, and to evaluate the effects of log arrangement on hydrological response and natural forest regeneration. Burnt logs were monitored over 24 months and classified according to bark damage. Wood decay was modelled using beta regression based on physical and mechanical parameters. Moderately burnt bark logs retained higher mechanical stability than logs with intact or completely burnt bark. Time since fire, bark damage class, and acoustic wave velocity were the main predictors of decay. Contour-aligned logs reduced runoff and erosion while promoting a higher proportion of established seedlings, whereas randomly distributed logs showed greater initial regeneration density but lower regeneration quality. These findings provide practical guidance for selecting fire-affected logs in NbS and improve understanding of their structural and ecological role in post-fire Mediterranean forest restoration.</p>

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A study on the lifespan of burnt logs used in nature-based solutions for post-fire anti-erosion barriers and forest regeneration promotion

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月31日

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  • Salvatore F. Papandrea,
  • Pasquale A. Marziliano,
  • Maria F. Cataldo,
  • Daniela D’Agostino,
  • Michele Mercuri,
  • Silvio Bagnato,
  • Giuseppe Bombino,
  • Andrea R. Proto

摘要

Mediterranean forest ecosystems are increasingly threatened by wildfires, compromising slope stability and delaying natural regeneration. In these contexts, Nature-based Solutions (NbS) represent sustainable approaches for post-fire restoration. This study evaluated the short- to medium-term structural durability and ecological effectiveness of fire-affected logs repositioned as erosion barriers after a large wildfire in a Pinus radiata stand in Southern Italy. The objectives were to assess the mechanical degradation of burnt logs using non-destructive technologies, to develop a predictive decay model, and to evaluate the effects of log arrangement on hydrological response and natural forest regeneration. Burnt logs were monitored over 24 months and classified according to bark damage. Wood decay was modelled using beta regression based on physical and mechanical parameters. Moderately burnt bark logs retained higher mechanical stability than logs with intact or completely burnt bark. Time since fire, bark damage class, and acoustic wave velocity were the main predictors of decay. Contour-aligned logs reduced runoff and erosion while promoting a higher proportion of established seedlings, whereas randomly distributed logs showed greater initial regeneration density but lower regeneration quality. These findings provide practical guidance for selecting fire-affected logs in NbS and improve understanding of their structural and ecological role in post-fire Mediterranean forest restoration.