两类常用森林火灾蔓延模型的比较

简要介绍了两类常用的森林火灾蔓延模型--邻接单元模型和波动传播模型的原理和实现方法.对作为离散模型的邻接单元模型和作为连续模型的波动传播模型的优、缺点作了系统的总结,并分析了它们对系统精度、实时性、复杂性、全局适应性、计算可靠性和整个模拟系统结构性能的影响.通过对比发现,两类模型在性能上的优势和局限有很强的互补性.因此,为了提高蔓延模型的性能,并使其不受火行为和地理要素复杂性的限制,有必要取长补短,通过现有的计算机技术将两者结合起来.

Research on two categories of spread model commonly used for forest fire

This paper briefly introduced theories and algorithms of two spread models commonly used for forest fire,namely contiguous cellular model and wave propagation model.The advantages and disadvantages of the former as a discrete model and the latter as a continuous model,were summarized systematically.And the effects of these advantages and disadvantages on the performance such as precision,complexity,adaptability,real time,calculation reliability and influence on whole simulation system etc.,were analyzed in the paper.It was discovered through contrast that two models were strongly complemented each other in advantages and limitations of performance.Therefore,in order to improve the performance of spread simulation and avoid restriction of fire behavior or geographical elements,it is necessary to integrate both based on computer techniques,so that they can assemble strong points each others to offset their weakness.