绘制葡萄牙最易受火灾影响地区的地图

IF 3 3区 农林科学 Q2 ECOLOGY
Tiago Ermitão, Patrícia Páscoa, I. Trigo, Catarina Alonso, C. Gouveia
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引用次数: 1

摘要

包括葡萄牙在内的地中海欧洲国家被认为是火灾多发地区,每年夏天都会受到火灾事件的影响。尽管如此,在过去的20年里,葡萄牙已经记录了大面积的燃烧区域,这不仅与炎热和干燥的条件密切相关,而且与生态系统中的高燃料可用性有关。由于最近的灾难性火灾季节,葡萄牙一直在火灾前季节实施预防政策,这反过来又可以优化火灾季节的战斗策略。在这种情况下,我们的研究有助于通过识别具有最高燃烧潜力的区域来预防火灾。将主成分分析(PCA)应用于遥感或再分析产品提供的一系列气候、生态和生物物理变量,这些变量已知与各种火灾易损性因素有关,从而可以客观地确定最容易发生火灾的地区。葡萄牙中部和最南部地区在PCA中呈现出更强的信号,表明未来可能发生火灾事件的风险很高。几个月的燃料积累,结合海拔和火灾天气条件,是保留的pc中可以解释大部分变化的术语。对2022年烧毁地区进行的质量评估表明,它们发生在高度易感地区,突出了所提出方法的实用性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Mapping the Most Susceptible Regions to Fire in Portugal
Mediterranean European countries, including Portugal, are considered fire-prone regions, being affected by fire events every summer. Nonetheless, Portugal has been recording large burned areas over the last 20 years, which are not only strongly associated with hot and dry conditions, but also with high fuel availability in the ecosystems. Due to recent catastrophic fire seasons, Portugal has been implementing preventive policies during the pre-fire season, which, in turn, can optimize combat strategies during the fire season. In this context, our study contributes to fire prevention by identifying the regions with the highest potential to burn. The application of a Principal Component Analysis (PCA) to a range of climatological, ecological, and biophysical variables, either provided by remote sensing or reanalysis products, and known to be linked with diverse fire-vulnerability factors, allows the objective identification of the regions with the highest susceptibility to burn. The central and southernmost areas of Portugal present a stronger signal in the PCA, suggesting a likely high exposure to future fire events. The fuel accumulation over several months, in conjunction with elevation and fire weather conditions, are the terms out of the retained PCs that can explain most of the variability. The quality assessment performed for the burned areas in 2022 showed that they occurred in highly susceptible areas, highlighting the usefulness of the proposed methodology.
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来源期刊
Fire-Switzerland
Fire-Switzerland Multiple-
CiteScore
3.10
自引率
15.60%
发文量
182
审稿时长
11 weeks
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