关键词: 中性致香成分, 中性致香成分

Abstract:

In order to improve the resilience of the rainstorm and flood disasters, and provide the technical support and decision-making basis for preventing and mitigating rainstorm and flood disasters in Weifang City, based on the digital topographic map of 1:50000 scale, statistic yearbook of 2009 and historical disaster data in Weifang, integrative estimate indexes which affected the flood risk in Weifang, including risk of flood hazard-form factors, sensitivity of flood hazard-breeding circumstance, vulnerability of flood hazard-bear circumstance, and capacity of flood hazard resistant were calculated. Combined the technology of flood risk assessment and GIS, the extent of flood was assessed and graded. And then the flood risk areas zoning map in Weifang was drew. The results showed that, all the areas in Zhucheng and most areas in Gaomi were the highest flood risk regions; most areas in southeast of Anqiu, small areas in northern of Gaomi and southeast of Changle were higher risk regions; the lower and low risk regions were most areas in northern of Changyi, most areas in Shouguang, northern and middle of Weifang and western of Qingzhou; the other areas were medium risk regions.