摘要
根据三明地区2000—2009年的林火数据,选取平均单次火灾过火面积、平均单位面积林火发生次数、平均单位面积损失蓄积量、森林活蓄积量4个因子,运用聚类分析方法对三明地区11个区县(梅列区和三元区统称市区)林火情况进行了划分,最终得到四类区划:一级火险区为大田县,占总面积10%;二级火险区为尤溪县,占总面积15%;三级火险区包括建宁、泰宁、清流、宁化、沙县,占总面积40%;四级火险区包括将乐、明溪、永安、市区,占总面积的35%。根据各类区划结果绘制了森林火险区划图,并分析了不同火险区林火预防和扑救情况,提出了预防和扑救对策。
A study was conducted to classify the forest fire danger zones in 11 districts （or counties） of Sanming, Fujian Pro- vince using the cluster analysis method base on the forest fire data from 2000 to 2009. Average burned area per individual fire, average forest fire occurrence per unit area, average burned volume loss per unit area and living stock were selected as classification indices. Fire danger areas were classified into four classes. Datian County belongs to class I fire danger area, accounting for 10% of the total area. Youxi County belongs to class II fire danger area, occupying 15% of the total area. The class III fire danger areas include Jianning, Taining, Qingliu, Ninghua and Shaxian County, accounting for 40% of the total area. The class IV fire danger areas include Jiangle, Mingxi, Yong＇ an County and urban area, accounting for 35% of the total area. A classification map of fire danger areas was drawn. The status of forest fire prevention and fire fighting at different fire danger areas were analyzed, and the prevention and control strategy were put forward.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2012年第11期70-73,共4页
Journal of Northeast Forestry University
基金
北京林业大学创新计划课题(BLRW200939)
国家"十二五"科技支撑课题(2011BAD32B05)
林业公益性行业科研专项(201004008)
关键词
森林火灾
聚类分析
火险区划
预防与扑救
Forest fires
Cluster analysis
Classification of fire danger
Prevention and fighting
