Potential flood hazard due to urban expansion in the karst mountainous region of North China

Zheng, Zhaopei; Qi, Shanzhong

doi:10.1007/s10113-011-0242-9

Cited by 14 publications

(3 citation statements)

References 6 publications

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“…The perceived status of the neighborhood and the scarcity of alternative lands were two critical factors indicated by the respondents as driving the hydrological modifications of land. In urban areas floods were not often caused by absolute surplus of water alone, but may also result from irrational land use patterns that turn useful precipitation into flood (Zheng and Qi 2011). Deforestation was also identified as an important contributing factor to the incidence of flooding in Ibadan.…”

Section: Institutional Factorsmentioning

confidence: 99%

The August 2011 flood in Ibadan, Nigeria: Anthropogenic causes and consequences

Agbola

Ajayi

Taiwo

et al. 2012

Int J Disaster Risk Sci

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Determining when and where flood strikes can be a daunting task. Apart from heavy and prolonged rainfalls and river overflows, there are anthropogenic causal factors of flooding. These anthropogenic factors are significantly variable and exacerbate floods, but may be difficult to measure. This study aims to unravel some of the anthropogenic factors, particularly with respect to their contributions to the flood in Ibadan City on 26 August 2011. Data were collected through structured questionnaire and key informant interviews. The August 2011 Ibadan flood was perhaps the worst in the history of this ancient city. Twelve anthropogenic factors are broadly identified as having contributed to the flood and the flood had five major consequences. Some policy implications that can help prevent future flood occurrence are outlined.

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Section: Institutional Factorsmentioning

confidence: 99%

The August 2011 flood in Ibadan, Nigeria: Anthropogenic causes and consequences

Agbola

Ajayi

Taiwo

et al. 2012

Int J Disaster Risk Sci

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show abstract

“…As the urbanization process accelerates, the uncertainty of risks is increasing (Wolsko and Marino 2016;Zhou and Zhao 2013;Zheng and Qi 2011). Although urbanization and industrial growth are often viewed as economically beneficial, they have the potential to harm the environment (Hussein and Ahmed 2016).…”

Section: Introductionmentioning

confidence: 99%

Urban Marginalization and the Declining Capacity for Disaster Risks in Contemporary China

Takahashi

2021

Social Sciences

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Many disaster studies in the social sciences have so far pointed out that contemporary urbanization catalyzes the transformation of actual and potential risks into disasters. Compared with the greater attention paid to the losses of disasters, there is inadequate recognition of the roles of deep-seated social factors in addressing environmental changes and risks. In addition, very few discussions about social vulnerabilities have paid attention to China, even though they focus on developing countries. In the past four decades, China’s rapid urbanization, urban expansions, and large-scale rural-urban migration have led to increasing difficulties in urban management, generating a large number of marginalized populations and spaces that are often called urban villages. The current marginalization problems are connected with economic poverty, sustained exclusion, and social inequality under state-managed urbanization. This study aims to provide a valuable discussion on the relationship between rapid urbanization and urban marginalization to identify the underlying causes of social vulnerability from the perspectives of institution, space, and urban governance, reviewing the experiences of China’s urbanization. This study concludes that urbanization-induced marginalization has adverse impacts on structural resistance to external pressures such as natural disasters.

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“…The impact of the 2012 flooding was very high in terms of human, material and production losses, with 363 people being killed, 5851 injured, 3 891 314 affected and 387 153 displaced (Federal Government of Nigeria – FGN 2013 ). These flooding events have been attributed to change in climatic variables (Douglas et al 2009 ), excessive rainfall (Agbola et al 2012 ), urban development in floodplains (Adelekan 2010 ; Wahab & Ojolowo 2017 , 2018 ; Zheng & Qi 2011 ) and indiscriminate municipal solid waste disposal in water channels (Ojolowo & Wahab 2017 ). The value of destroyed physical and durable assets caused by the 2012 flooding in the most affected states of Nigeria has been estimated to be N1.48 trillion or its equivalent of $9.5 billion (FGN 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Spatial knowledge and flood preparedness in Victoria Island, Lagos, Nigeria

Bako¹,

Ojolowo²

2021

Jàmbá Journal of Disaster Risk Studies

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There is inadequate flood preparedness in Victoria Island, Lagos, Nigeria; because when the flood struck on 08 July 2017, several properties were destroyed without any extant means to salvage them. This article investigated the relationship between spatial knowledge and flood preparedness in Victoria Island. The variables employed to measure spatial knowledge include knowledge of: elevation of land, distance between Lagos lagoon and Atlantic Ocean, characteristics of surrounding water bodies and building–plot ratio. Major roads were used to subdivide Victoria Island into four zones. Zone A had 799 buildings, zone B had 813 buildings, zone C had 749 buildings and zone D had 887 buildings. Of the total 3248 buildings, 344 buildings were selected, and one household head per building was selected and systematically sampled. A multinomial logit regression model was used in data analysis at p ≤ 0.05. The findings revealed that spatial knowledge accounted for only 25.8% of the explanation of inadequate flood preparedness. Only 6.1% of the respondents could distinguish height from elevation; those who explained density and setbacks correctly were 7.85% and 12.2%, respectively. Respondents who stated the distance between Lagos lagoon and Atlantic Ocean correctly and exhibited means of preparedness were 13.7%, respectively. However, 74.4% described the primary and secondary water bodies and their flow pattern correctly. Although inadequate spatial knowledge did not statistically account for poor flood preparedness, yet majority of the respondents neither prepared adequately for the annual flood event, nor exhibited adequate spatial knowledge. Therefore, other factors require investigation, whilst residents should acquire spatial flood-related education to influence their sense of flood preparedness.

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Potential flood hazard due to urban expansion in the karst mountainous region of North China

Cited by 14 publications

References 6 publications

The August 2011 flood in Ibadan, Nigeria: Anthropogenic causes and consequences

The August 2011 flood in Ibadan, Nigeria: Anthropogenic causes and consequences

Urban Marginalization and the Declining Capacity for Disaster Risks in Contemporary China

Spatial knowledge and flood preparedness in Victoria Island, Lagos, Nigeria

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