Risk Assessment of Gale Disaster on Corn in Heilongjiang Province
In order to study the impact of gale disasters on corn crops in high latitudes,based on the theory of natural disaster risk and combined with ArcGIS spatial analysis technology,this paper analyzed the risk factors of gale disasters in Heilongjiang Province,the environmental sensitivity of disaster,the exposure of disaster bearing bodies and the ability of disaster prevention and reduction,and carried out a comprehensive risk assessment.The research shows that the high incidence areas of corn gale disasters are concentrated in the southeast of Songnen Plain and the west of Sanjiang Plain.These areas have flat terrain,no large-scale vegetation coverage,high wind risk coefficient,large corn planting area and medium disaster prevention and mitigation ability.It is suggested that maize lodging damage could be prevented and controlled by giving priority to the selection of lodging-resistant varieties,sowing in warm and suitable climate,regularly reinforcing maize plants during planting,and taking measures such as mulching protection.The results provide a theoretical basis for the relevant departments to adjust the agricultural structure and formulate disaster prevention and mitigation countermeasures and measures.
high latitude regionsHeilongjiang Provincecorngale disasterrisk assessmentArcGIS spatial analysisdisaster risk theory
NETL
NSTL
万方数据
