河北省围场县森林火险区划研究

Forest Fire Risk Zone Mapping in Weichang County of Hebei Province

以围场满族蒙古族自治县作为研究区,利用森林资源二类调查数据、DEM数据和地形图,以GIS技术作为支撑,选取地物类型、地形因子以及人类活动和交通区位作为主要林火影响因子,采用因子加权重置综合分析法计算围场县各个乡镇的森林火险指数。根据计算出的森林火险指数,将所有乡镇分为低火险、中火险、高火险和极高火险4类火险区。结果表明,低、中、高和极高火险区分别占研究区的2.73%、36.50%、57.72%和3.41%,极高或高火险区主要集中在塞罕坝机械林场和御道口牧场东北部;中火险区主要位于御道口牧场;低火险区则集中在卡伦后沟牧场和红松洼国家级自然保护区。最后通过对划分的火险区进行了总体、地域的分析,并提出了预防对策。此研究可以为围场县的森林火灾管理提供有价值的参考。

Taking the Manchu Mongolian Autonomous County as the research area,using the forest resources second survey data,DEM data and topographic map,GIS technology as the support,selecting the terrain type,topographic factors and human activities and traffic location as the main forest fire factors,the forest fire risk index of each town in the paddock county was calculated by factorized weighted comprehensive analysis.According to the calculated forest fire risk index,all the townships were divided into four categories：low fire risk,medium fire risk,high fire risk and high fire risk.The results showed that the low,medium and high risk areas accounted for 2.73%,36.50%,57.72% and 3.41% respectively.The high or high fire zone was mainly concentrated in the northeastern part of the Saihanba Machinery Forest Farm and the Yutaokou pasture.The medium-risk area was mainly located in the Yutaokou pasture.Pasture and red pine depression national nature reserve.Finally,the general and geographical analysis of the fire area divided by the fire area and the preventive measures were put forward.The study could provide a valuable reference for the forest fire management of the Weichang County.