【摘要】 在现有的基于元胞自动机的林火蔓延模型的基础上,提出了元胞作用域的概念,将元胞自身属性与外界影响通过作用域的概念归纳为一个整体。建立的基于元胞作用域的林火蔓延模型不仅包括中心元胞的属性,如可燃物类型、气温等,还将邻居元胞的点燃系数、距离系数、风作用项及地形作用项纳入考虑范畴,其中距离系数以基于地图代数的障碍距离为基础,地形作用项则以DEM为基础求取。模拟结果表明,基于元胞作用域的林火蔓延模型能够真实地反映现实世界林火蔓延的过程。更多还原

【Abstract】 Based on the study of the existing CA-based fire spreading model,we propose the concept of cellular-scope which summarized cellular self-attributes and external influences by the concept of scope as a whole,and give a more comprehensive interpretation of the factors for fire spreading.Compared to the traditional model,a fire spreading model which is based on cellular-scope give a full consideration of the fire factors including not only the properties of center cellular such as the type of combustible material,temperature and so on,but also the ignition factor,distance factor,the role of wind action items and terrain action items of neighbors cellular,and distance coefficient is based on the map-algebra-based obstacle distance,and the terrain action items is based on DEM data.Finally,the simulated results show that the fire spreading model based on cellular-scope can be a real reaction to real-world process of fire spreading.更多还原