湖南省森林火灾空间分布特征分析

Analysis of spatial distribution of forest fire in Hunan province

采用探索性空间数据分析方法对湖南省林火的分布规律进行了分析研究。结果表明,湖南省各个市(县)的林火分布存在着不均匀性,有4个林火高发区域和3个林火低发区域。林火次数由南向北、由西向东呈上升趋势。一般森林火灾发生次数较多的县市在空间上的分布大致呈一个"C"型;较大森林火灾的空间分布特点为"东多西少";重大森林火灾发生的空间分布特点是"周边多、中部少"。根据分析结果,应对林火进行分区管理,以提高林火管理水平、节约防火资源。

The occurrence of forest fire is affected by many factors.The impact factors of forest fires in various regions are different which resulted in the occurrence and development of forest fire in various regions are different.In this paper,we analyzed the distribution of forest fires in Hunan Province by using of exploratory spatial data analysis（ESDA）.The results show that there is uneven distribution of forest fire in the various counties and cities in Hunan.And there are four areas of high incidence of forest fires and three areas of low incidence of forest fire.The number of fire have upward trends from south to north and from west to east.The distribution of general forest fires in space was roughly a C-shaped.The distribution of large forest fires was the characteristics of ＂ in East part more than in West part＂.And the spatial distribution of major forest fires was the characteristics of ＂ in surrounding more than in central＂.Based on the results,the partition management of forest fire should be adopted to improve forest fire management and economize fire prevention resources.