Aiming at the frequently occurred geological hazards.a assessment was done in Pengyang County

Ningxia Hui Autonomous Region.China.The locations of geological hazards were identified in the county based on both remote sensing interpretation and field surveys.Using five assessment indices including slope gradient.elevation.slope aspect.rainfall intensity and the proximity to main roads.a map of geological hazard level was produced based on geographical information system(GIS) and the model of information value(IVM).The results show that the model of information value and GIS improved the automation level.efficiency.and accuracy of the assessment.and then facilitate the realization of dynamic and scientific assessment of geological hazards.The map of geological hazard assessment provides scientific references for urban and rural planning and identifying appropriate construction sites for local governments.