Analysis of the impact of urbanization on regional flood risk: A case study in the Qinhuai River Basin, China

Urban agglomeration polders (UAPs) are often used to control flooding in eastern China. The impacts of UAPs on individual flood events have been extensively examined, but how flood risks are influenced by UAPs is much less examined. This study aimed to explore a three-dimensional joint distribution of annual flood volume, peak flow and water level to examine UAPs’ impact on flood risks based on hydrological simulations. The dependence between pairwise hydrological characteristics are measured by rank correlation coefficients and graphs. An Archimedean Copula is applied to model the dependence structure. This approach is applied to the Qinhuai River Basin where UAPs are used proactively for flood control. The result shows that the Frank Copula can better represent the dependence structure in the Qinhuai River Basin. UAPs increase risks of individual flood characteristics and integrated risks. UAPs have a relatively greater impact on water level than the other two flood characteristics. It is noted that the impact on flood risk levels off for greater floods.

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Modeling the impact of urbanization on infectious disease transmission in developing countries: a case study in Changchun City, China

10.1117/12.812985 ◽

2008 ◽

Author(s):

Ping Zhang ◽

Peter Atkinson ◽

Changbao Yang

Keyword(s):

Infectious Disease ◽

Developing Countries ◽

Disease Transmission ◽

Infectious Disease Transmission ◽

Changchun City ◽

Impact Of Urbanization ◽

The Impact

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Vulnerability to Natural Disaster and Welfare Effect: A Case Study of Flood Risk in Vietnam’s North Central Region

Journal of Asian and African Studies ◽

10.1177/0021909621993499 ◽

2021 ◽

pp. 002190962199349

Author(s):

Manh-Hung Nguyen ◽

Dung P Le ◽

Thang T Vo

Keyword(s):

Flood Risk ◽

Sampling Method ◽

Household Survey ◽

North Central ◽

Household Level ◽

Central Vietnam ◽

Housing Costs ◽

Household Vulnerability ◽

The Impact

This article investigates the impact of flood risk on vulnerability and welfare at the household level in Vietnam. The analytical sample is taken from a household survey conducted in a north central Vietnam community through a three-stage stratified random sampling method. The propensity score matching approach is employed to compare various welfare indicators between flooded and non-flooded households. This study finds that flooding results in significant income losses and imposes higher costs of living, especially housing costs. The two types of households are vulnerable, implying that other natural disasters or socio-economic disadvantages may have adverse effects on households’ livelihoods. The insignificant effect of floods on vulnerability indicates that the flooded households can cope with floods to some extent. However, contrary to family support, formal coping strategies are insufficient or ineffective at reducing household vulnerability to floods.

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