广东林业科技
廣東林業科技
엄동임업과기
FORESTRY SCIENCE AND TECHNOLOGY OF GUANGDONG PROVINCE
2014年
2期
35-40
,共6页
严朝东%林育述%陈轩阳%胡科%林观土
嚴朝東%林育述%陳軒暘%鬍科%林觀土
엄조동%림육술%진헌양%호과%림관토
大屏嶂%森林火险等级%火险区划
大屏嶂%森林火險等級%火險區劃
대병장%삼림화험등급%화험구화
Dapingzhang%grade of forest fire risk%zone mapping of forest fire risk
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GI S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。
針對廣東省東莞大屏嶂森林公園的森林資源環境特點,選取植被類型、坡度、坡嚮、海拔、居民區距離、道路距離6箇火險影響因子,利用GI S空間分析功能對大屏嶂森林公園進行森林火險等級的評價與區劃。區劃方案錶明,該區可以劃分為無、低、中、高和極高5箇等級火險區,其麵積分彆佔研究區的1.67%、2.19%、33.16%、55.3%和7.68%。森林火險等級的空間分異較明顯,極高火險主要齣現在西北部,中部和北部火險等級較高,東部與南部火險稍低。森林火險較高等級主要受植被類型、坡嚮及海拔這3箇因素影響。
침대광동성동완대병장삼림공완적삼림자원배경특점,선취식피류형、파도、파향、해발、거민구거리、도로거리6개화험영향인자,이용GI S공간분석공능대대병장삼림공완진행삼림화험등급적평개여구화。구화방안표명,해구가이화분위무、저、중、고화겁고5개등급화험구,기면적분별점연구구적1.67%、2.19%、33.16%、55.3%화7.68%。삼림화험등급적공간분이교명현,겁고화험주요출현재서북부,중부화북부화험등급교고,동부여남부화험초저。삼림화험교고등급주요수식피류형、파향급해발저3개인소영향。
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.