湖南森林火灾的灾情区域分异研究  

Study of regional divergence of forest fire disaster situation in Hunan

作　　者：孙玉荣[1] 张贵[1] 陈爱斌[1] 林友干 

机构地区：[1]中南林业科技大学理学院,湖南长沙410004 [2]大田县森林防火指挥部,福建大田366100

出　　处：《中南林业科技大学学报》2012年第8期7-11,共5页Journal of Central South University of Forestry & Technology

基　　金：湖南省自然科学基金重点项目"全球气候变化对湖南森林火灾时空格局的影响"(09JJ3033)

摘　　要：湖南是我国重要的商品林建设基地,但又是中南区森林火灾重灾区,对其森林火灾灾情区域分异规律的认识可为制定和实施森林火灾防灾减灾对策提供科学依据。以森林火灾过火面积作为灾情分析指标,运用基尼系数、行业集中率指数、赫希曼指数及N指数等方法,对湖南2001~2008年度森林火灾灾情的区域分异程度、空间聚集变动特征及其影响因素等内容进行研究。结果表明：（1）湖南森林火灾灾情的区域分异程度呈现出缓慢上升趋势;（2）森林资源丰富的永州、郴州和邵阳等地区森林火灾灾情非常严重,而森林资源贫乏的湘潭、娄底等地森林火灾灾情不严重;（3）森林资源相对贫乏的岳阳和张家界等市森林火灾灾情严重,而森林资源相对丰富的常德和益阳等市森林火灾灾情却并不严重,表现出提高森林防火管理水平可以减少区域森林火灾灾情。Hunan is the main commercial forests base in our country, but it is also the heavy disaster area of forest fire in Central South China Area. Finding out the regional divergence rule of disaster situation of forest fire in the area can provide a scientific basis for establishing and implementing the countermeasures of forest fire disaster prevention and reduction. The divergence degree, spatial development characteristics and influencing factors etc. of forest fire in Hunan from 2001 to 2008 were studied by taking burned area as index, using Gini＇s coefficient, CRn index, HHI index and N index. The results show that （1） the regional divergence degree of forest fire disaster situation had a slow ascending trend in Hunan; （2） the forest fire disasters were very serious in some areas with abundant forestry resources, such as Yongzhou, Chenzhou and Shaoyang and so on; but the severeness of forest fire in Xiangtan and Loudi with poor forestry resources were not in serious state. （3） The forest fire disasters were heavy in Yueyang and Zhang jiajie with comparatively poor forestry resources, while the forest fire disasters were not serious in Changde and Yiyang with comparatively rich forestry resources. It indicates that it increasing management level of prevention of forest fires can decrease the disaster of forest fire.

关 键 词：森林火灾 灾情区域分异 基尼系数 行业集中率指数 赫希曼指数 N指数 

分 类 号：S762.2[农业科学—森林保护学] TP389.1[农业科学—林学]