Comprehensive Risk Assessment of Multi-hazard Natural Disasters in Xianyang City Based on AHP
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摘要: 当今世界地质灾害、洪水灾害和地震灾害等多种自然灾害频发，灾害群聚与群发现象导致灾情加重，人们越来越关注如何降低多灾种自然灾害的风险。以陕西省咸阳市为例，将咸阳市地质灾害、洪水灾害和地震灾害结合起来，开展多灾种自然灾害风险综合评价。研究结果表明，咸阳市多灾种自然灾害风险分区呈现出明显的空间差异性，整体上渭河河谷沿线地段和西北侧的中低山丘陵区风险程度以中风险和高风险为主，主要集中在秦都区城区东南侧、武功县西北侧、乾县县城区、三原县城区东侧、淳化县城区、彬州市城区以及旬邑县县城区，其他区域自然灾害风险程度以低风险和极低风险为主。研究成果可为咸阳市应急管理和国土空间规划带来一定的借鉴意义和指导作用。Abstract: Natural disasters as geological disasters, floods,and earthquakes etc frequently occurred worldwide nowadays. The aggravation of the clustered disasters makes it an increasing concern how to reduce the risk of these disasters.This paper carried out a comprehensive assessment on the risk of multi-hazard natural disastersin Xianyang city of Shaanxi province.The results show that the risk zone presents obvious spatial differences.Overall, the risk is much higher along the WeiheValley and the northwestern mid-low hilly areas, spreading mainly in the southeast of Qindu District,the northwestof Wugong county,the urban area of Qianxian county,the eastern urban area of Sanyuan county,the urban area of Chunhua county, Binxian city and Xunyi county.In other regions,the risk of natural disasters is comparatively low.The results provide some references and guidance for the emergency managing and land space planning of Xianyang city.
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Keywords:
- natural disaster /
- multi-hazard /
- AHP /
- risk assessment /
- Xianyang city
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