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首页> 外文期刊>Forestry >The effects of site characteristics on the landscape-level windthrow regime in the North Shore region of Quebec, Canada. (Themed Issue: Wind as a natural disturbance agent in forests.)
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The effects of site characteristics on the landscape-level windthrow regime in the North Shore region of Quebec, Canada. (Themed Issue: Wind as a natural disturbance agent in forests.)

机译：场地特征对加拿大魁北克北岸地区景观水平风向的影响。 （主题问题：风是森林中的自然干扰因子。）

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摘要

Understanding windthrow is essential for the implementation of ecosystem management, especially in forests with long fire return intervals. Our study describes windthrow dynamics at a landscape scale of the Quebec North Shore region, Canada, and evaluates the effect of some site (soil surface material thickness or deposit thickness, drainage, slope, topography and wind), and stand (dominant species, height and density) characteristics on windthrow probabilities. The SIFORT database, created by the Ministry of Natural Resources and Wildlife of Quebec, the Quebec forest fire control agency and the Quebec forest pest and disease control agency, was used to perform a spatiotemporal analysis of windthrow, according to site and stand characteristics. Windthrow probabilities were influenced by topographic exposure (topex), slope classes and deposit thickness. Windthrow probabilities increased with topographic exposure. Windthrow occurrence was highest when deposit was thick (more than 1 m) and slope class was medium (from 15 to 30 per cent). Finally, this study has shown the importance of partial windthrow at the landscape scale in the North Shore region. Thus our results suggest that from an ecosystem management perspective, clear-cutting must be partly replaced by partial cuts, in order to emulate the regional dynamics of partial windthrow.
机译：了解风向对于实施生态系统管理至关重要，尤其是在回火间隔较长的森林中。我们的研究描述了加拿大魁北克北岸地区景观尺度上的风向动力学，并评估了某些站点（土壤表层材料厚度或沉积厚度，排水，坡度，地形和风）和林分（主要物种，高度）的影响和密度）的特性。由魁北克自然资源和野生动物部，魁北克森林防火局和魁北克森林病虫害防治局创建的SIFORT数据库用于根据站点和林分的特征进行风向的时空分析。风投概率受地形暴露（topex），坡度等级和沉积物厚度的影响。风投概率随地形暴露而增加。当沉积物较厚（大于1 m）且坡度等级为中等（从15％到30％）时，风向发生率最高。最后，这项研究表明了北岸地区局部风向在景观尺度上的重要性。因此，我们的结果表明，从生态系统管理的角度来看，为了模拟局部风向的区域动态，必须将部分砍伐代替部分砍伐。

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