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Research on Application of Integrated Fire Danger Index Based on Ignition and Fire
Authors
周利霞
张华
黄宝华
Publication date
1 January 2013
Publisher
Abstract
为利用点燃和火源概率的集成火险指数(IFDI)准确地监测和评估森林火险,应用中分辨率成像分光辐射谱仪(MODIS)和数字高程模型(DEM)数据,反演出可燃物预热能量(Qig)所需参数。通过计算得到Qig。考虑其在实际传递过程中的热量损失,得到与实际情况相符的点燃概率指数。由DEM计算得到地表粗糙度指数,结合人口密度指数,得到火源概率指数(FRPI)。利用上述2个指数组成IFDI。应用IFDI,研究分析黑龙江地区2004年全年火险和10月12日重大林火处的着火点前12天火险情况。结果表明:随着火灾发生日期的接近,IFDI升高,即可根据IFDI对森林火险实施预警
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Last time updated on 29/11/2016