分析洛杉矶县2025年四场大火的多维度影响，揭示城市交界区火灾危害更严重。
Assessment of the January 2025 Los Angeles County wildfires: A multi-modal analysis of impact, response, and population exposure
- 用哨兵-2影像结合柯尔莫哥洛夫网络模型测绘烧毁面积
- 城市交界区火灾损毁超9000栋建筑，影响超2万人
- 发现植被、管理复杂度与人口暴露高度相关，适合应急规划者参考
本研究对加州四场重大野火（帕利萨德、伊顿、肯尼思、赫斯特）进行了综合分析，涵盖地表覆盖变化、管辖管理、建筑损毁和人口脆弱性等多个维度。基于哨兵-2遥感影像，采用切比雪夫-柯尔莫哥洛夫-阿诺德网络模型，测算出烧毁面积介于315.36至10,960.98公顷之间。分析显示，灌木生态系统受创最严重，占所有火灾烧毁面积的57.4%-75.8%。管辖评估表明，管理复杂度差异显著，帕利萨德火由单一机构主导（占比98.7%），其他则涉及多个部门协同。建筑损毁分析显示，城市交界区火灾（伊顿：9,869栋；帕利萨德：8,436栋）远高于农村火灾（肯尼思：24栋；赫斯特：17栋）。人口分析显示性别比例均衡（女性50.9%，男性49.1%），工作年龄人口占受影响群体的53.7%-54.1%，灾后存在明显时间分布变化。研究发现城市交界区邻近性、建筑损毁与人口暴露呈强相关。帕利萨德和伊顿火分别影响超2万人，而农村事件不足500人。结果为制定针对性野火管理策略提供依据，尤其强调在城乡交界区需采用年龄与性别敏感型应急响应方案。
原文摘要 · Abstract (English)
This study presents a comprehensive analysis of four significant California wildfires: Palisades, Eaton, Kenneth, and Hurst, examining their impacts through multiple dimensions, including land cover change, jurisdictional management, structural damage, and demographic vulnerability. Using the Chebyshev-Kolmogorov-Arnold network model applied to Sentinel-2 imagery, the extent of burned areas was mapped, ranging from 315.36 to 10,960.98 hectares. Our analysis revealed that shrubland ecosystems were consistently the most affected, comprising 57.4-75.8% of burned areas across all events. The jurisdictional assessment demonstrated varying management complexities, from singular authority (98.7% in the Palisades Fire) to distributed management across multiple agencies. A structural impact analysis revealed significant disparities between urban interface fires (Eaton: 9,869 structures; Palisades: 8,436 structures) and rural events (Kenneth: 24 structures; Hurst: 17 structures). The demographic analysis showed consistent gender distributions, with 50.9% of the population identified as female and 49.1% as male. Working-age populations made up the majority of the affected populations, ranging from 53.7% to 54.1%, with notable temporal shifts in post-fire periods. The study identified strong correlations between urban interface proximity, structural damage, and population exposure. The Palisades and Eaton fires affected over 20,000 people each, compared to fewer than 500 in rural events. These findings offer valuable insights for the development of targeted wildfire management strategies, particularly in wildland urban interface zones, and emphasize the need for age- and gender-conscious approaches in emergency response planning.
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