Forest fire spreading geography cellular automaton simulation method

A cellular automaton and forest fire spread technology, which is applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of difficult implementation, not considering the influence of the probability of cellular ignition, and lack of application interfaces, etc. To achieve the effect of intuitive observation

Inactive Publication Date: 2013-06-19
NANJING UNIV
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Problems solved by technology

[0005] All kinds of CA forest fire models proposed at present mainly consider the ignited probability of the current cell from the flammability factor and distance coefficient of the cell tree species, without considering the burning intensity of combustibles (combustibles burn per unit area per unit time) The effect of different heat r

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  • Forest fire spreading geography cellular automaton simulation method
  • Forest fire spreading geography cellular automaton simulation method
  • Forest fire spreading geography cellular automaton simulation method

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[0048] Example

[0049] In the forest fire spreading geographic cellular automata simulation method of this embodiment, the cell has experienced five combustion states successively: unburned, just ignited, violently burned, started to extinguish, and already extinguished throughout its evolutionary life cycle. Such as figure 1 As shown, including the following steps:

[0050] The first step is to construct the cell space for model operation based on the DEM data in the predetermined area and the flammability distribution data of tree species, and establish the combustion cell stack and the high-risk cell stack respectively;

[0051] In this example, the flammability distribution grid number of the tree species is formulated according to the national forest fire risk zoning classification standard for combustion type classification (LY / T 1063-2008), and the spatial resolution of the two is 30m.

[0052] The second step is to set a fire point, and add the cell where the fire point is lo...

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Abstract

The invention relates to a forest fire spreading geography cellular automaton simulation method. Through the method, a cellular space for operation of a model is established according to DEM data and tree variety flammability distribution data of a preset zone, a burning cellular stack and a high-risk cellular stack are respectively established; an igniting point is set, a cell where the igniting point is placed is added into the burning cellular stack; cells in the burning cellular stack are taken out in sequence, if the cells do not reach an extinguished state, a burning state is renewed, cells which are not ignited and are located on eight neighborhoods of the cells are added into the high-risk cellular stack; the cells are taken out from the high-risk cellular stack in sequence, when the igniting probability of the cells is larger than a preset threshold value, the state of the cells is renewed to a just-ignited state, and the cells are added into the burning cellular stack; and the above two steps are carried out repeatedly until the burning cellular stack is empty. The method can be used for analogue simulation of forest fire spreading with complex tree variety, and forest fire spreading results close to real situations are obtained.

Description

technical field [0001] The invention relates to a method for simulating the spreading trend of forest fires, in particular to a simulation method for geographical cellular automata of forest fires spreading. Background technique [0002] Forest fire is a common, very sudden and destructive natural disaster, which often brings serious threats and losses to forest resources, forest ecology and human life and property. Carrying out forest fire simulation to obtain the burning trend of forest fire is one of the effective means of fire prediction. It can assist fire prevention decision-making and reduce fire losses before forest fires burn in large areas. For nearly a century, human beings have been trying to use various methods to explore forest fire inducing factors, and consider using various effective observation methods to study forest fire combustion characteristics and spreading mechanisms, in order to obtain effective and reliable prediction methods to reduce losses in a ...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 李飞雪张帅李满春湛玉剑
Owner NANJING UNIV
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