Bako Abdullateef, Ojolowo Saeed K
Department of Urban and Regional Planning, Faculty of Environmental Sciences, University of Ilorin, Kwara State, Nigeria.
Department of Urban and Regional Planning, Faculty of Environmental Design and Management, University of Ibadan, Oyo State, Nigeria.
Jamba. 2021 Mar 5;13(1):825. doi: 10.4102/jamba.v13i1.825. eCollection 2021.
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 ≤ 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.
尼日利亚拉各斯维多利亚岛的洪水防备措施不足；因为在2017年7月8日洪水来袭时，多处房产被摧毁，却没有任何现存的手段来挽救它们。本文研究了维多利亚岛空间知识与洪水防备之间的关系。用于衡量空间知识的变量包括：陆地海拔、拉各斯泻湖与大西洋之间的距离、周边水体特征以及建筑容积率。主要道路被用于将维多利亚岛划分为四个区域。A区有799栋建筑，B区有813栋建筑，C区有749栋建筑，D区有887栋建筑。在总共3248栋建筑中，选取了344栋建筑，并从每栋建筑中选取一名户主进行系统抽样。数据分析采用多项逻辑回归模型，显著性水平≤0.05。研究结果表明，空间知识仅占洪水防备不足解释的25.8%。只有6.1%的受访者能够区分高度和海拔；正确解释密度和退缩距离的受访者分别为7.85%和12.2%。正确说出拉各斯泻湖与大西洋之间的距离并展示防备手段的受访者分别为13.7%。然而，74.4%的受访者正确描述了主要和次要水体及其水流模式。虽然空间知识不足在统计学上并不能解释洪水防备不佳的情况，但大多数受访者既没有为年度洪水事件做好充分准备，也没有表现出足够的空间知识。因此，需要调查其他因素，同时居民应该接受与洪水相关的空间教育，以影响他们的洪水防备意识。
