Based on the analysis of 500?hPa upper air synoptic situation from 1989 through 2003,four main synoptic model to bring about martial law time for forest fire risk in winter and spring is presented.

• 通过对1989-2003年500 hPa高空天气形势的分析,给出了冬、春季森林火险戒严期的4种主要天气模型。