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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Mapping erosion risk and selecting sites for simple erosion control measures after a forest fire in Mediterranean France
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Mapping erosion risk and selecting sites for simple erosion control measures after a forest fire in Mediterranean France

机译：在法国地中海森林大火后绘制侵蚀风险图并选择简单的侵蚀控制措施地点

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Major forest fires occur periodically in the Mediterranean environment. The impact of forest fires on soil erosion and runoff processes has been studied extensively, and it has been demonstrated that the first months after a fire represent a high risk period. Erosion control strategies must be established in the weeks following a forest fire to reduce fire impacts during the critical phase. Both dead and live vegetation techniques can be used to either reduce soil loss from slopes or trap sediments in streams before they enter the main channel: these include log erosion barriers, log debris dams and grass filter strips. The major challenge is defining where to position the measures quickly in a catchment where several thousand hectares have been burned. The method proposed here is based, firstly, on a simple soil erosion model that identifies critical erosion zones, and secondly, on a more detailed analysis of high risk slopes according to their potential impact on the main river channel, the value of the soil resource to be protected, the availability of pine logs, and accessibility to the site. Measurements of suspended sediment load in the main channel and tributaries confirmed that the erosion risk map was suitable for the purposes of the study. Many of the recommendations suggested were implemented and a study is underway to evaluate their effectiveness in reducing erosion and trapping sediments. Copyright (C) 2006 John Wiley & Sons, Ltd.
机译：在地中海环境中，定期发生重大森林火灾。森林火灾对土壤侵蚀和径流过程的影响已得到广泛研究，并且已证明火灾后的头几个月代表着高风险期。必须在森林大火发生后的几周内建立侵蚀控制策略，以减少关键阶段的火灾影响。死植被和活植被技术都可以用于减少坡面的土壤流失或在河流进入主河道之前将其沉积在河流中：这些设施包括原木侵蚀屏障，原木杂物坝和草滤带。面临的主要挑战是确定将措施迅速放置在几千公顷被烧毁的集水区中的位置。本文提出的方法首先基于一个简单的土壤侵蚀模型，该模型可识别关键侵蚀区域，其次，根据对高风险坡度的潜在影响，根据其对主要河道的潜在影响，对土壤资源的价值进行更详细的分析。受保护，松木日志的可用性以及站点的可访问性。对主要航道和支流中悬浮泥沙负荷的测量结果证实，侵蚀风险图适用于研究目的。提出的许多建议已得到执行，并且正在进行一项研究以评估其在减少侵蚀和捕获沉积物方面的有效性。版权所有（C）2006 John Wiley＆Sons，Ltd.

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