YU Han,GUO Hao,WANG Jing'ai.Comprehensive risk assessment of typhoon for regionalization[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2023,62(01):86-95.
YU Han,GUO Hao,WANG Jing'ai.Comprehensive risk assessment of typhoon for regionalization[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2023,62(01):86-95. DOI: 10.13471/j.cnki.acta.snus.2021D082.
Comprehensive risk assessment of typhoon for regionalizationA case of population and economic risk in Guangdong Province
China is the most seriously affected area by typhoons. It is of great significance for the theory and practice of zonal disaster risk prevention to carry out a systematic risk assessment of typhoon disasters and regional law summary and regionalization research. Based on the regional disaster system theory
we systematically evaluate the population and economic risk of typhoon disasters in Guangdong Province and express the results using a geo-graph method of the return period
to support the future work of typhoon disaster risk regionalization. In the model
typhoon hazards include wind
heavy rain
and flood. The evaluation model includes three factors: typhoon hazard intensity
the social vulnerability of the population and economic victims
and the extent of exposure. The scenarios include 5-year
10-year
20-year
50-year
and 100-year return periods. The results show: 1) the hazard intensity decreases gradually from coastal to inland for each scenario
i.e.
intensive hazards mainly concentrate in coastal areas and inland areas along rivers. 2) the high vulnerability is mainly distributed in urban areas of the Pearl River Delta
East
North
and West Guangdong. 3) the high exposure is mainly concentrated in the Pearl River Delta
East
and West Guangdong cities. 4) the risk gradually decreases from coastal to inland
in five scenarios high-risk areas are concentrated in the Pearl River Delta
and the secondary high-level centers are in the Chaozhou
Shantou urban area in eastern Guangdong
and the Zhanjiang
Maoming urban area in western Guangdong. These multi-scenario and systematic results could be the basis of the following research on the regionalization of natural disaster risk.
关键词
台风灾害风险评价人口与经济风险风险区划广东省
Keywords
typhoon disasterrisk assessmentpopulation and economic riskrisk regionalizationGuangdong province
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