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林业科学 ›› 2006, Vol. 42 ›› Issue (11): 76-80.doi: 10.11707/j.1001-7488.20061114

• 论文及研究报告 • 上一篇    下一篇

北京市森林可燃物分类研究

田晓瑞1 戴兴安2 王明玉1 舒立福1 高成德3   

  1. 1.中国林业科学研究院森林生态环境与保护研究所国家林业局森林保护学重点实验室,北京100091;2.中南林业科技大学,长沙410004;3.北京市林业局,北京100029
  • 收稿日期:2005-03-14 修回日期:1900-01-01 出版日期:2006-11-25 发布日期:2006-11-25

Study on the Fuel Types Classification of Forests in Beijing

Tian Xiaorui1,Dai Xing'an2,Wang Mingyu1,Shu Lifu1,Gao Chengde3   

  1. 1.Research Institute of Forest Ecology,Environment and Protection,CAF Key Open Laboratory of Forest Protection of State Forestry Administration Beijing 100091;2.Central South University of Forestry and Technology Changsha 410004;3.Beijing Forestry Bureau Beijing 100029
  • Received:2005-03-14 Revised:1900-01-01 Online:2006-11-25 Published:2006-11-25

摘要:

利用北京市土地利用图和 Landsat TM 影像,采用监督分类方法对可燃物进行分类,获得可燃物分类图,并对各类可燃物的特征进行详细描述。结果表明:可燃物可分6类,即O_1草地(中低盖度)、O_2草地(高盖度)、S_1灌丛、S_2幼林、C_1针叶林、M_1针阔混交林和B_1阔叶林。由于TM卫星影像分辨率的限制,很难分别出林分垂直结构的差异。这一分类结果,可以满足森林火险等级预报的需要,但对于火行为预报,还需要根据林分燃烧性、林分垂直结构及可燃物分布状态进一步分类。对当前的可燃物分类方法与制图途径以及未来的发展趋势进行讨论。

关键词: 可燃物分类, 可燃物制图, 林火管理

Abstract:

Fuel type is a basic concept to describe the state of fuel,and it is usually used as a basic input for the fire behavior model of the forest fire danger rating system.The paper uses the land cover map and Landsat TM imagery of Beijing to make the fuel map by using supervised classification.Fuel type maps account for structural characteristics of vegetation related to fire behaviour and fire propagation.The results classify the vegetation into six fuel types:O_1 grass,O_2 grass(high coverage),S_1 shrub,S_2 young plantation,C_1 conifer forest,M_1 mixed wood and B_1 broad_leaf forest.Due to the resolution limit of TM imagery,it is difficult to distinguish the forest variety in vertical structure.The results can be used in the forest fire danger rating system,but there is a need for further classification for the fuel with the flammability,vertical structure and distribution in order to make the fire behavior prediction.The paper also discusses the current methods and development of fuel classification and mapping.

Key words: fuel types classification, fuel mapping, forest fire management