摘要
针对广东省东莞大屏嶂森林公园的森林资源环境特点,选取植被类型、坡度、坡向、海拔、居民区距离、道路距离6个火险影响因子,利用GIS空间分析功能对大屏嶂森林公园进行森林火险等级的评价与区划。区划方案表明,该区可以划分为无、低、中、高和极高5个等级火险区,其面积分别占研究区的1.67%、2.19%、33.16%、55.3%和7.68%。森林火险等级的空间分异较明显,极高火险主要出现在西北部,中部和北部火险等级较高,东部与南部火险稍低。森林火险较高等级主要受植被类型、坡向及海拔这3个因素影响。
According to the traits of forest resource environment in Dapingzhang forest park,spatial analysis function of GIS was applied to forest fire risk grade evaluation and zone mapping in this paper.Six factors including stand,slope,aspect,altitude,distance to settlement and to road,were chosen as forest fire risk factors.The re-sults indicated that Dapingzhang forest park could be divided into five fire risk zones.The area of no,low,moder-ate,high and extremely high fire risk zone accounted for 1.67%,2.19%,33.16%,55.3%and 7.68%,respec-tively.The spatial distribution differences of forest fire risk zones were obvious.The extremely high fire risk mainly appeared in the northwestern part,while moderate and high fire risk spread through the central and northern part, and the low fire risk mainly located on the eastern and southern part.Stand,aspect and altitude were principal fac-tors that affected forest fire risk.
出处
《广东林业科技》
2014年第2期35-40,共6页
Forestry Science and Technology of Guangdong Province
基金
华南农业大学科技项目(5600-H13150)资助
关键词
大屏嶂
森林火险等级
火险区划
Dapingzhang
grade of forest fire risk
zone mapping of forest fire risk
