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首页> 外文期刊>Berichte des Meteorologischen Institutes der Universitat Freiburg >Windstorm damage in coniferous forests in Galicia (NW Spain)under different thinning treatments
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Windstorm damage in coniferous forests in Galicia (NW Spain)under different thinning treatments

机译：不同间伐处理对加利西亚（西班牙西北部）针叶林的风暴破坏

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摘要

Extra tropical cyclone Klaus hit southern France and northern Spain on January 23~(th)and 24~(th)2009, causing severe damage to forests in its path. The extreme gust wind speeds reached up to198 km/h in Galicia (NW Spain), the most productive forestry region of Spain. In this area, thewind destroyed about 1.2 million cubic meters of wood, approximately 25% of the region an-nual harvest. The storm also affected the thinning trials established by the Sustainable ForestManagement Unit (UXFS) for the four major commercial conifers in Galicia (Pinus radiata D.Don, Pinus pinaster Ait., Pinus sylvestris L. and Pseudatsuga menziesii Mirb. Franco). To assess the susceptibility of forests to wind damage, as affected by the stand and tree charac-teristics and management, becomes extremely important to face the predicted increase on thefrequency of extreme weather events under climate change. This study evaluates the damageproduced on each of those trials and the causes of the differences among them and compares theeffect of the different treatments carried out in the plots (heavy thinning from below, light thin-ning from below, mixed thinning with crop tree designation and control without thinning) on theoccurrence of wind damage during storms. The data collected is analyzed to determine the treecharacteristics (diameter at breast height, crown size, total height, slenderness ratio and Hart-Becking index) more relevant to windthrow susceptibility.
机译：2009年1月23日至24日，额外的热带气旋克劳斯袭击了法国南部和西班牙北部，对沿途森林造成了严重破坏。在西班牙生产力最高的林业地区加利西亚（西班牙西北部），极端阵风风速高达198 km / h。在该地区，风摧毁了约120万立方米的木材，约占该地区年产量的25％。暴风雨还影响了可持续森林管理单位（UXFS）为加利西亚的四大主要商业针叶树（松树，松树，樟子松和樟子松和佛手柑）进行的间伐试验。评估受林分，树木特性和管理影响的森林对风害的敏感性，对于应对气候变化下极端天气事件发生频率的预期增长变得至关重要。这项研究评估了每个试验所产生的损害以及它们之间差异的原因，并比较了该地块中进行的不同处理的效果（从下方进行的重间伐，从下方进行的轻度间伐，与作物树名称的混合间伐和避免在暴风雨中发生风害。分析收集到的数据，以确定与风速易感性更相关的树木特征（胸高，树冠大小，总高度，细长率和哈特-贝克林指数）。

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