| 张 慧,和红晓,潘克玉.基于主成分和聚类分析的湘西州森林火灾特征研究[J].林业调查规划,2025,50(6):148-156 |
| 基于主成分和聚类分析的湘西州森林火灾特征研究 |
| Forest Fire Characteristics in Xiangxi Prefecture Based onPrincipal Component and Cluster Analysis |
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| DOI： |
| 中文关键词: 森林火灾 时空分布规律 主成分分析 聚类分析 湘西州 |
| 英文关键词: forest fire spatio-temporal distribution pattern principal component analysis cluster analysis Xiangxi Prefecture |
| 基金项目:湖南省湘西土家族苗族自治州森林火灾高风险区林火阻隔系统工程建设项目(2311-433100-04-01-637418);湖南省湘西土家族苗族自治州森林火灾高风险区森林防火应急道路工程建设项目(2311-433100-04-01-196660). |
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| 中文摘要: |
| 为掌握湘西州森林火灾特征,根据湘西州2017—2023年森林火灾资料,分析湘西州森林火灾的时空动态和分布规律,采用主成分分析和聚类分析方法对湘西州森林火灾形势进行评价。结果显示,湘西州森林火灾的年际变化极为显著,2022年是森林火灾发生频率最高的一年,其次是2019年
和2017年,其发生与气象因子关系紧密,森林火灾发生主要集中在春初(3—4 月)和秋初(9—10 月)。
森林火灾主要发生在北部的永顺、龙山、保靖和古丈县,火灾发生总次数最多的是古丈县,火场总面
积最大的是永顺县,森林受害面积最大的是保靖县,要加大北部森林防火资源投入。花垣县的火灾形势管控较好,保靖县和凤凰县的火灾形势明显好转,古丈县火灾形势反复,永顺和龙山县的火灾
形势呈恶化态势,应重视并加大森林火灾防控投入。 |
| 英文摘要: |
| To investigate the characteristics of forest fires in Xiangxi Prefecture, this study analyzed the
spatio-temporal dynamics and distribution patterns of forest fires based on the forest fire data of Xiangxi
Prefecture from 2017 to 2023, and evaluated the forest fire severity by principal component analysis and
cluster analysis. The results revealed significant interannual variation in forest fires, with the highest frequency
occurring in 2022, followed by 2019 and 2017. Forest fires were closely related to meteorological
factors and primarily concentrated in early spring(from March to April) and early autumn(from September
to October). Spatially, fires were most frequent in the northern counties of Yongshun, Longshan,
Baojing, and Guzhang. Guzhang County had the highest number of fire incidents, Yongshun County had the largest total burned area, and Baojing County had the largest affected forest area. Increased investment
in fire prevention resources was needed in the northern region. Regarding fire control, Huayuan County
maintained effective management, Baojing and Fenghuang Counties showed significant improvement,
Guzhang County experienced fluctuations, while Yongshun and Longshan Counties exhibited a worsening
trend, necessitating increased attention and investment in forest fire prevention and control. |
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