The quantification of post-disturbance root reinforcement (RR) recovery dynamics is of paramount importance for the optimisation of forest ecosystem services and natural hazards risk management in mountain regions. In this work we analyse the long-term root reinforcement dynamic of spruce forests combining data of the Swiss National Forest Inventory with data on root distribution and root mechanical properties. The results show that root reinforcement recovery depends primarily on stand altitude and slope inclination. The maximum root reinforcement recovery rate is reached at circa 100 years. RR increases continuously with different rates for stand ages over 200 years. These results shows that RR in spruce stands varies considerably depending on the local conditions and that its recovery after disturbances requires decades. The new method applied in this study allowed for the first time to quantify the long term dynamics of RR in spruce stands supporting new quantitative approaches for the analysis of shallow landslides disposition in different disturbance regimes of forests.

中文翻译：

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欧洲云杉林根系强化的时间动态

扰动后根系强化 (RR) 恢复动态的量化对于优化山区森林生态系统服务和自然灾害风险管理至关重要。在这项工作中，我们将瑞士国家森林清单的数据与根系分布和根系机械特性的数据相结合，分析了云杉林的长期根系加固动态。结果表明，根系加固恢复主要取决于林分高度和坡度。大约 100 年达到最大根系加固恢复率。对于 200 年以上的林龄，RR 以不同的速率不断增加。这些结果表明，云杉林的 RR 因当地条件而有很大差异，并且其在干扰后的恢复需要数十年的时间。