| 应用RS及GIS进行林业局森林火险区划的研究 |
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| 引用本文： | 唐季林,张晓丽.应用RS及GIS进行林业局森林火险区划的研究[J].北京林业大学学报,1996,18(1):13-21. |
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| 作者姓名： | 唐季林 张晓丽 |
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| 作者单位： | 北京林业大学森林资源与环境学院 |
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| 摘 要： | 应用经过数字图象处理的ＴＭ图象，进行森林火险因子的各种空间数据采集；结合地面调查和实验，编制了森林资源分布图、森林可燃物燃烧性分布图、森林火险天气等级图、人口密度图、道路网密度图和森林火灾发生率六种专题图．应用ＧＩＳ空间数据库管理中的图象叠加、自然属性库进行分类，在综合分析评价的基础上应用知识的计算程序系统，模拟森林火险领域和解决问题的能力．将甘肃省迭部林业局森林火险等级分为四级，即Ⅰ级高火险区，Ⅱ级火险区，Ⅲ级一般火险区，Ⅳ级低火险区．再以林业局为总体，各自然沟系作为总体评价单元，用小班火险等级加权平均计算面积、沟系的平均火险等级及林业局的平均火险等级
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| 关 键 词： | 森林火险区划，森林燃烧环，地理信息系统，卫星图象 |
Study on the Division of Forest Fire Danger in the Forestry Bureau by Using Remote Sensing and Geographical Information System |
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| Tang Jilin,Zhang Xiaoli.Study on the Division of Forest Fire Danger in the Forestry Bureau by Using Remote Sensing and Geographical Information System[J].Journal of Beijing Forestry University,1996,18(1):13-21. |
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| Authors: | Tang Jilin Zhang Xiaoli |
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| Abstract: | In this study, the following maps are compiled by using TM image through digital image processing: the distribution map of forest resources, the distribution map of the combustibility of forest combustibilities, the map of forest fire danger weather classes,the map of population density, the map of road-network density and the map of the frequency of forest fire occurrence. By using the image superposition in the management of GIS spacedata bank and natural attribute bank, forest fire danger is classified. On the basis of comprehensive analysis assessment, by using the calculation program system of knowledge and by simulating the range of forest fire danger and the ability to solve problems, the forest fire danger of Diebu Forestry Bureau is divided into four classes, i. e., Class Ⅰ(high fire danger area), Class Ⅱ(fire danger area), Class Ⅲ (common fire danger area) and Class Ⅳ(low fire danger area). Taking the forestry bureau as a whole, and different gully systems as the units of assessment in the whole, the average fire danger classes of the forestry bureau can be obtained by calculating the weighted arithmetic mean of the areas of the fire danger classes of small subcompartments. |
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| Keywords: | division of forest fire danger forest burn ring geographical information system TM image |
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