Analysis of temporal and spatial distribution of forest fire in Yunnan province
The research on the rules of forest fire is the basis of forest fire forecast,and the scientific basis for forest fire prevention and the remedial work.It has the important theoretical and practical significance.According to forest fire data from 1996 to 2013,fire space-time dynamic and distribution rule is studied by using tools such as GIS in Yunnan.The results shows that:① Forest fire occurs mainly in winter and spring,especially from December to May (the following year).Forest fire is most severe in March and April.Artificial fire is the main cause of forest fire,so the relevant departments should strengthen publicity and education in order to impmve the public consciousness of fire prevention.② From the perspective of the spatial distribution,the fire occurred mainly in the following areas:south of Diqing,Nujiang,Lijiang,Dali,north of Baoshan,north of Dehong,Puer,west of Yuxi,south of Chuxiong,north of Qujing and north of Wenshan.③ From the perspective of the terrain,forest fires are mainly distributed in high-risk area between 1000-3000m above sea level.Sunny slope is easy to fire,and with the increase of slope,forest fire frequency increases,when the slope is greater than 20°,forest fire frequency dramatically reduce with the increase of slope.
forest firetemporal and spatial distributionGISYunnan province
NETL
NSTL
万方数据
维普
