Based on the observations of the national principal stations, the basic stations and the ordinary stations from 2005 to 2014 provided by the National Meteorological Information Center, a forest fire danger weather index model is built with the modified Brown-Davis method and the forest fire danger weather grade is established. They are verified by the corresponding daily frequency statistics of the forest and shrub fires, provided by the National Forestry and Grassland Administration (NFGA), combined with the case study and it is shown that the modified forest fire danger weather index is indicative for its values of five regions are higher in spring and autumn, as is consistent with the major fire prevention season set by the NFGA. In the three key forest fire-prevention regions of the meteorological service, namely, the northeast, the south and the southwest forest regions, the modified forest fire weather index has a high correlation with the forest fire frequency. The applied analysis of the forest fire in Inner Mongolia province in 2017 shows a high applicability of the index model.

forest fire danger weather index  /  Brown-Davis method  /  forest fire danger weather grade