天气条件与森林火灾的密切关系已引起普遍重视。现有的各种火险天气的预报方法大多以某些气象因子为指标,尽管预报方法对历史火灾资料的拟合程度很高,但在实际使用时往往空报漏报较多。另一方面,各种指标预报方程的预报时效甚短,往往在达到指标时也即是林火发生的最危险期,防火力量防不胜防,使森林资源受到严重损失。因此, The close relationship between weather conditions and forest fires has drawn universal attention. Most of the existing methods for predicting fire and danger weather are based on some meteorological factors. Although the prediction methods have a high degree of fitting to historical fire data, they often fail to be reported in actual use. On the other hand, the forecasting of various index forecast equations has a very short time-lag, and often reaches the most dangerous stage of forest fire when the indicator is reached. Therefore, the fire prevention capability is hard to be defeated and the forest resources are seriously damaged. therefore,