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基于机器学习算法的贵州省森林火灾预测

Forest fire prediction in Guizhou province based on machine learning algorithm

  • 摘要: 贵州森林资源丰富、森林覆盖率高,林地、农地、村庄形成林农交错,叠加自然和社会因素,是中国林火发生的重灾区。因此,分析贵州省森林火灾发生驱动因子,并进行火险区划,对于提高该地区的火灾防控能力具有重要意义。综合考虑了气象、地形以及人为方面的因素,对2024年上半年贵州省的森林火灾情况进行了研究分析。基于随机森林、卷积神经网络、极限学习机和自适应提升算法四种不同的机器学习模型,使用网格搜索法和贝叶斯优化方法进行参数调优,以构建最优的预测模型,并根据预测结果绘制了贵州省森林火险分布图。研究结果表明:四种模型的预测准确率均超过85%,随机森林模型的准确率达到了91%;日最高气温、日总降水量和平均风速等气象因素是影响贵州省森林火灾发生的关键因素;此外,贵州省的部分地区,如贵阳市、毕节市和黔南布依族苗族自治州,在2024年7、8月份的森林火灾风险较高。为贵州省森林火灾的预防和控制提供了参考信息,有助于相关部门制定更为有效的火灾管理策略。

     

    Abstract: Guizhou is rich in forest resources and has a high forest coverage rate, and the interlacing of forest land, farmland and villages with natural and social factors is superimposed, making it the hardest hit area of forest fires in China. Therefore, it is of great significance to analyze the driving factors of forest fires in Guizhou province and carry out fire risk zoning to improve the fire prevention and control ability in this region. In this paper, the forest fires in Guizhou province in the first half of 2024 are analyzed by considering the meteorological, topographic and human factors. Based on four different machine learning models,including random forest, convolutional neural network, extreme learning machine and adaptive lifting algorithm, the grid search method and Bayesian optimization method were used to optimize the parameters to construct the optimal prediction model,and the forest fire risk distribution map of Guizhou province was drawn according to the prediction results. The results show that the prediction accuracy of the four models is more than 85%, and the accuracy of the random forest model reaches 91%.Meteorological factors such as daily maximum temperature, total daily precipitation and average wind speed are the key factors affecting the occurrence of forest fires in Guizhou province. In addition, parts of Guizhou province, such as Guiyang, Bijie, and Qiannan Buyi and Miao Autonomous Prefecture, are at higher risk of forest fires in July and August 2024. This paper provides reference information for the prevention and control of forest fires in Guizhou Province, which is helpful for relevant departments to formulate more effective fire management strategies.

     

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