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| 东莞大屏嶂森林火险等级评价与区划 |
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严朝东,胡科,陈轩阳,林观土,林育述
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东莞市大屏嶂森林公园,东莞市大屏嶂森林公园,东莞市林业科学研究所,华南农业大学信息学院,东莞市大屏嶂森林公园
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| 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。 |
| 关键词: 大屏嶂 森林火险等级 火险区划 |
| DOI： |
| 分类号:S762 |
| 基金项目:华南农业大学科技项目（5600-H13150）资助 |
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| Evaluation and Zone Mapping of Forest Fire Risk Grade in Dapingzhang, Dongguan |
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YAN Chaodong,HU Ke,CHEN Xuanyang,LIN Guantu and 林育述
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Dapingzhang Forest Farm,Dongguan Institute of Forestry Science,College of Information, South China Agricultural University,
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| Abstract: |
| 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 results indicated that Dapingzhang forest park could be divided into five fire risk zones. The area of no, low, moderate, high and extremely high fire risk zone accounted for 1.67%, 2.19%, 33.16%, 55.3% and 7.68%, respectively. 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 factors that affected forest fire risk.\ |
| Key words: Dapingzhang grade of forest fire risk zone mapping of forest fire risk |
