The frequency, severity, and spatial extent of destructive wildfires have increased in several regions globally over the past decades. While direct impacts from wildfires are devastating, the hazardous legacy of wildfires affects nearby communities long after the flames have been extinguished. Post-wildfire soil conditions control the persistence, severity, and timing of cascading geohazards in burned landscapes. The interplay and feedback between geohazards and wildfire-induced changes to soil properties, land cover conditions, and near-surface and surface processes are still poorly understood. Here, we synthesize wildfire-induced processes that can affect the critical attributes of burned soils and their conditioning of subsequent geohazards. More specifically, we discuss the state of knowledge pertaining to changes in mineralogical, hydraulic, mechanical, and thermal properties of soil due to wildfire with a focus on advances in the past decade. We identify how these changes in soil properties alter evapotranspiration, interception, sediment transport, infiltration, and runoff. We then link these alterations to the evolution of different geohazards, including dry raveling, erosion, rockfalls, landslides, debris flows, and land subsidence. Finally, we identify research gaps and future directions to advance knowledge on how wildfires control the evolution of various earth surface processes and geohazards over time.

中文翻译：

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野火引起的土壤性质改变、近地表过程和地质灾害之间的相互依赖性

过去几十年来，全球多个地区破坏性野火的频率、严重程度和空间范围有所增加。虽然野火的直接影响是毁灭性的，但野火的危险遗留物在火焰扑灭后很长时间仍然影响着附近的社区。野火后的土壤条件控制着被烧毁的景观中级联地质灾害的持续性、严重性和时间。地质灾害和野火引起的土壤特性、土地覆盖条件以及近地表和地表过程变化之间的相互作用和反馈仍然知之甚少。在这里，我们综合了野火引发的过程，这些过程可以影响烧毁土壤的关键属性及其对后续地质灾害的调节。更具体地说，我们讨论了与野火引起的土壤矿物学、水力、机械和热学性质变化有关的知识状况，重点关注过去十年的进展。我们确定土壤性质的这些变化如何改变蒸散、拦截、沉积物输送、渗透和径流。然后，我们将这些变化与不同地质灾害的演变联系起来，包括干燥崩塌、侵蚀、落石、山体滑坡、泥石流和地面沉降。最后，我们确定了研究差距和未来方向，以增进有关野火如何控制各种地球表面过程和地质灾害随时间演变的知识。