Contour-felled log debris (CFD) and log erosion barriers (LEB) are two restoration practices used worldwide on hillslopes to avoid soil erosion after wildfires. Although significant work has evaluated the effectiveness of these practices on soil loss prevention, their effects on soil properties have been little researched to date. Here, the effects of CFD and LEB treatments on several physico-chemical and biological soil properties were investigated across four post-fire zones in Mediterranean forest (Sierra de Los Donceles, Spain). Results suggest that post-fire management similarly altered the recovery of microbiological soil properties and soil functionality for both CFD and LEB treatments. Post-fire management enhanced soil organic matter (SOM) and basal respiration, while suppressing soil microbial activities. SOM enhancement at our plots may have been associated with suppressed soil microbial decomposition activity due to post-fire increases in electrical conductivity. Plots with post-fire management recovered microbiological soil properties better than unmanaged burn plots, but not to the same level as nearby unburned plots. LEB and CFD may not only be effective in retaining sediments, but also in improving post-fire microbiological soil properties in comparison to unmanaged plots. However, after eight years of post-fire management, soil microbiological soil properties did not completely recover compared to unburnt areas. That is, fire may shift the development trajectory of microbiological soil properties so that they may no longer be able to return to the same unburnt conditions. Post-fire restoration plans should consider the use of LEB and CFD when aiming to aid soil-related ecosystem recovery processes after wildfires.

等高砍伐的原木碎片 (CFD) 和原木侵蚀屏障 (LEB) 是全球在山坡上使用的两种恢复方法，以避免野火后的土壤侵蚀。尽管有大量工作评估了这些措施在防止土壤流失方面的有效性，但迄今为止很少研究它们对土壤特性的影响。在这里，在地中海森林（Sierra de Los Donceles，西班牙）的四个火灾后区域调查了 CFD 和 LEB 处理对几种物理化学和生物土壤特性的影响。结果表明，火灾后管理同样改变了 CFD 和 LEB 处理的微生物土壤特性和土壤功能的恢复。火灾后管理增强了土壤有机质 (SOM) 和基础呼吸，同时抑制了土壤微生物活动。由于火灾后电导率增加，我们地块的 SOM 增强可能与抑制土壤微生物分解活动有关。火灾后管理的地块比未管理的燃烧地块更好地恢复了微生物土壤特性，但与附近未燃烧地块的恢复水平不同。与未管理的地块相比，LEB 和 CFD 不仅可以有效保留沉积物，还可以改善火灾后的微生物土壤特性。然而，经过八年的火灾后管理，与未燃烧的区域相比，土壤微生物的土壤特性并没有完全恢复。也就是说，火灾可能会改变土壤微生物特性的发展轨迹，使它们可能不再能够恢复到相同的未燃烧状态。