A Study on Vulnerability Assessment and Regionalization of Maize Drought Disaster in Northwestern Liaoning Province, China

Based on the IPCC's definition of vulnerability, from the aspects of sensitivity and adaptability, 17 indexes related to meteorological, crop physiological and socio-economic factors were selected, combined with the statistical analysis and the method of multiple linear regression, a vulnerability evaluation model of maize drought disaster in northwestern Liaoning province was established. In support of this model, the vulnerability coefficients in different areas were calculated and the vulnerability zoning could be achieved. The results indicated that the areas with high level of vulnerability were mainly located in Fuxin, Chaoyang, Huludao counties, while the areas near Shenyang city showed a low level of vulnerability.Finally,for the model testing, the relationship between vulnerability and maize yield reduction rate was built by using correlation analysis, which lead to a satisfactory result and proved the model established here was effective.