Abstract: Considering the natural attribute of disaster-causing factor and the social attribute of disaster affected body, a risk evaluation model was established based on a disaster system theory. According to the diurnal minimal temperature data at 182 weather stations from 1961 to 2010, land areas and the social economic data at 172 rice planting areas from 1991 to 2006 in the northeast China, the rice growth period data from 30 agricultural weather stations, the rice frost damage risk was assessed by a traditional method of disaster analysis and a GIS technology. The results indicate that it could be divided into five rice frost damage risk areas in the northeast China, i.e. the highest, the high, the middle, the low and the lowest. The highest risk area is located in the most Heihe area and the west of Yichun in Heilongjiang province, and in the west of Yanbian and the north of Baishan in Jilin province, while the lowest one is in the middle and south of Liaoning province.

Key words: rice, frost, Risk division, Rice, Frost, Risk evaluation and division