Abstract: Different levels of arid years being defined respectively by the 0. 5 t imes and 1. 5 times standard deviational of the annual precipitation mean values, and thenmaize arid disaster year being confirmed by whether the me??teorological equivalent yield reducion should be greater than three percent, this paper analyzed the maize average decreas??ing rate in drought years and its spatial distribut ion in various cities of Hebei Province, and studied the frequency distribu??tion raw of the maize drought hazard with different intensities. From point of view on risk analysis of disasters, this studypresented a methodology for risk assessment and division of maize drought hazard in Hebei Province, inculding the con??cept, calculation method, and regional distribution of the disaster risk index. The average decreasing rate, drought hazardrisk indexes and annual precipitat ion were selected as factors dominanting insurance of drought hazard, based on which,the maize growing zone would be divided into three grades, such as light, moderate and heavy under the support of GIS.The average decreasing rate, the disaster prevention and mitigation measures of drought year with different intensities and loses were also dicussed in different kind of risk areas.

Key words: Hebei Province, Maize, Drought, Risk division

CLC Number: 

• S165