南阳市林火时空分布特征及其影响因素研究  

Temporal and Spatial Distribution Characteristics and Influencing Factors of Forest Fire in Nanyang City

作　　者：张静阁 郝珉辉 李志 蔡齐飞[1,2] 刘震 ZHANG Jingge;HAO Minhui;LI Zhi;CAI Qifei;LIU Zhen(College of Forestry,Henan Agricultural University,Zhengzhou 450046,China;Key Laboratory of State Forestry Administration for Forest Resources Cultivation in Central Plains Region,Zhengzhou 450046,China;Research Center of Forest Management Engineering of State Forestry and Grassland Administration,Beijing Forestry University,Beijing 100091,China)

机构地区：[1]河南农业大学林学院,郑州450046 [2]中原地区森林资源培育国家林业局重点实验室,郑州450046 [3]北京林业大学国家林业和草原局森林经营工程技术研究中心,北京100091

出　　处：《河南科学》2025年第4期586-595,共10页Henan Science

基　　金：中央财政林业科技推广示范项目(GTH[2023]02号)。

摘　　要：研究市县尺度林火时空分布特征及其影响因素,开展森林火灾风险等级区划,可为区域林火防控提供科学依据。基于南阳市2015—2022年林火数据和气象数据,从市县尺度分析了南阳市林火发生规律和影响因素,并从乡镇尺度对南阳市森林火灾风险等级进行区划。结果表明:2015—2022年南阳市林火发生次数总体呈下降趋势,且具有明显的季节性,主要集中在冬、春季,2月份出现峰值,主要发生时段为11:00—19:00。南阳市林火整体空间分布类型为聚集模式,核密度值较高区域主要集中在卧龙区北部、南召县南部、镇平县东北部、方城县北部;林火聚集区域保持西北—东南分布,火点中心位置逐步由卧龙区北部向南召县和方城县偏移。人为因素是引发南阳市林火的主要原因,祭祀用火、农事用火为主要火源;相对湿度、平均气温、累计降雨日数是影响南阳市林火发生的最主要气象因子。南阳市森林火灾高风险区和较高风险区主要分布在以山脉为分界线的乡镇行政交界区域,故南阳市需要强化乡镇间联防联控,加强行政交界区域的火灾防范工作。研究结果有助于南阳市精准制定林火防控政策,加强火灾多发区防范,分类开展源头管控,有效降低林火发生概率。Studying the temporal and spatial distribution characteristics and influencing factors of forest fires at city and county scale,and carrying out forest fire risk zoning can provide scientific basis for regional forest fire prevention and control.Based on the forest fire data and meteorological data of Nanyang City from 2015 to 2022,this paper analyzed the the occurrence rule and influencing factors of forest fires in Nanyang City from the city and county scale,and divided the forest fire risk level from the township scale.The results showed that the incidence of forest fires in Nanyang City from 2015 to 2022 showed a decreasing trend,with obvious seasonality.The forest fires in Nanyang City mainly concentrated in winter and spring,and the peak occurred in February.The main occurrence period of forest fires in Nanyang City was 11:00-19:00.The overall spatial distribution type of forest fires in Nanyang City was aggregation model,and the regions with higher kernel density values were mainly concentrated in the north of Wolong District,the south of Nanzhao County,the northeast of Zhenping County and the north of Fangcheng County.The distribution of forest fire aggregation area was kept from northwest to southeast,and the center of fire point gradually shifted from the north of Wolong District to Nanzhao County and Fangcheng County.Human factor was the main cause of forest fires in Nanyang City,and the fire for sacrifice and farming was the main source of fire.Relative humidity,average temperature and cumulative rainfall days were the main meteorological factors affecting the occurrence of forest fires in Nanyang City.The highest-risk areas and higher-risk areas of forest fires in Nanyang City were mainly distributed in the administrative border areas of villages and towns with mountains as the dividing line.Therefore,Nanyang City needs to strengthen the joint prevention and control between townships and strengthen forest fire prevention work in the administrative border areas in the future.The research results are h

关 键 词：南阳市 森林火灾 时空分布 火险区划 风险等级 

分 类 号：S762[农业科学—森林保护学]