摘要
以2000-2009年中国内地341个地级以上城市的火灾统计数据为研究对象,采用主成分分析法和空间自相关分析法,对火灾损失4项指标进行了无量纲处理,计算出火灾综合损失,基于地理信息系统对火灾综合损失进行分类分级(5级)和可视化表达。研究表明,火灾综合损失较高的地区主要分布于黑河-腾冲线以东地区,火灾综合损失高值聚集区主要分布于东部沿海地区,低值聚集区分布于西部内陆地区随着年度变化,高值聚集区和低值聚集区呈现出聚集范围同步缩小的趋势,说明东部经济发达地区的高火灾损失区域和西部经济欠发达地区的低火灾损失区域正在从集中向分散演变。
The fire data of 341 cities in China during 2000--2009 were analyzed by the principal component analysis. And spatial cluster analysis. All units were classified into 5 grades by fire composite losses based on GIS. The results showed that the high fire composite losses region lies to the east of Heihe-Teng- chong line, and high value cluster mainly distribute in eastern coastland, and low value cluster locate in western inland area. The range of high and low value cluster reduced gradually year by year, means high value cluster region at east commercially developed region and low value cluster region at west commer- cially underdeveloped region is turning from concentrative to dispersive.
出处
《消防科学与技术》
CAS
北大核心
2012年第2期210-213,共4页
Fire Science and Technology
关键词
火灾统计
主成分分析法
时空特征
地理信息系统
空间自相关分析法
fire statistics
principal component analysis
tempo-ral and spatial distribution
GIS
spatial cluster analysis
