scholarly journals GIS-Based Climate Change Induced Flood Risk Mapping in Uhunmwonde Local Government Area, Edo State, Nigeria

Author(s):  
Obot Akpan Ibanga ◽  
Osaretin Friday Idehen

Introduction: Flood is one of the climate change induced hazards occurring in most parts of the world. It exposes humanity and many socio-ecological systems to various levels of risks. In Nigeria, extreme rainfall events and poor drainage system have caused inundation of several settlements to flooding. To contain the disaster, risk mapping were among the measures recommended. Aims: The aim of this paper is to highlight flood risk zones (FRZ) in Uhunmwonde Local Government Area (LGA), Edo State, Nigeria. Methodology: Flood risk (FR) was mapped using hazards and vulnerability and implemented using geographic information system (GIS)-based multi-criteria analysis analytic hierarchy process (MCA-AHP) framework by incorporating seven environmental and two socio-economic factors. Elevation, flow accumulation, soil water index of wettest quarter, normalized difference vegetation index, rainfall of wettest quarter, runoff of wettest quarter and distance from rivers constituted the hazard component while population density and area of agricultural land use was the vulnerability layer. The climate change induced flood risk was validated using the responses of 150 residents in high, moderate and low flood risk zones. Results: The resulting flood risk map indicated that about 40.4% of Uhunmwonde LGA fell within high flood risk zone, 35.3% was categorized under moderate flood risk zone whereas low flood risk zone extended up to about 24.3% of the LGA. The high number of respondents who reported occurrence of flooding with frequency being very often and the fact that flooding was a very serious environmental threat during on-the-spot field assessment validated the generated climate change induced flood risk. Conclusion: The utilitarian capabilities of GIS-based MCA-AHP framework in integrating remotely-sensed biophysical and climate change related flood inducing indicators with socio-economic vulnerabilities to arrive at composite flood risk was demonstrated.

2016 ◽  
Vol 8 (1) ◽  
pp. 29-37
Author(s):  
Dace Berzina

The flood risk problems in Riga city due to global warming and climate change are studied based on the European experience incorporated in European and Latvian legislation. Amendment to the Protection Zone Law of Latvia is studied and compared with the likelihood of the flood risk and development possibilities in the flood risk zones. The study focuses on the case of the Vecdaugava River neighbourhood as the potential flood risk zone in Riga city. Tiriamos potvynio rizikos Rygos mieste keliamos problemos, atsiradusios dėl globalinio atšilimo ir klimato pokyčių, remiantis Europos patirtimi, atspindėta Europos ir Latvijos įstatyminėje bazėje. Analizuojami Latvijos Respublikos apsaugos zonų įstatymo pakeitimai, potvynio rizikos galimybės tam tikrose zonose. Tyrimas skirtas nagrinėti Vecdaugavos upės atvejį kaip potencialią potvynių zoną Rygos mieste.


Author(s):  
R.A Okere ◽  
◽  
C.N. Nwawe ◽  
I.O. Uwubanmwen ◽  
I.D. Garba ◽  
...  

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
I. O. Ernest-Nwoke ◽  
M. O. Ozor ◽  
U. Akpamu ◽  
M. O. Oyakhire

Aim. To study the relationship between body mass index (BMI) and blood pressure (BP) on visual acuity among apparently healthy residents of Ekpoma, Esan West Local Government Area of Edo State, Nigeria. Methodology. This is a cross-sectional descriptive study among 225 subjects (ages of 18–35 years) from whom BP, body weight, and height were collected. Visual acuity was measured using the Snellen chart following standard procedures of number of letters seen at 6-metre distance. The data were then analyzed using SPSS version 17. Results. The sampled population consists of 112 male and 113 female (mean age 31.72±14.2 years). Majority (180) of the respondents had normal visual acuity. However, compared with the respondents with normal BMI (R19.61±1.5; L19.67±1.70), visual acuity of underweight (R18.53±2.30; L18.53±2.70) and obese (R15.68±4.79; L17.73±1.70) were more deviated. Similarly, compared with respondent with normal BP (120–125/80–85 mmHg; R18.00±2.53; L18.07±3.11), hypotensive (R15.5±7.35; L15.00±10.20), and hypertensive (R15.01±21.25; L15.00±11.91) respondents had deviated visual acuity. Conclusion. Abnormal body weight (underweight and obese) and BP (hypotension and hypertension) have potential negative impacts on visual acuity. Based on the observed relationship between weights, BP, and visual acuity, eye examinations can be included as regular screening exercise for abnormal BMI and BP conditions.


2018 ◽  
Vol 1 (1) ◽  
pp. 1-7
Author(s):  
Ebhomienlen, T. O. ◽  
Aitufe V. O

This essay portrays Female Education in Nigeria as a key to Development in Esan North East Local Government Area, Edo State. The need to break the barrier of sex discrimination at the crucial time that Nigeria needs all round development is more appealing. The female folks are supposed to be co – pilots of the wheel of progress. It is evident in Esan North East Local Government Area that the traditional view of women has not drastically changed. Most women are still into petty business, like trading, farming, menial fashion making, hair making and so on. The new wind of change that is blowing in some parts of Nigeria has not sufficiently reflected in the area of this study. This study therefore, aims at encouraging females themselves and their parents to change their past view on education and respond positively on female education campaign initiates. To achieve the objectives of this essay the researcher adopts the historical, analytical and phenomenological methodology. It discovers that the training of girls/ women will enhance the social, political and economic status of women themselves and the society at large and this will form the bedrock for holistic development.


Sign in / Sign up

Export Citation Format

Share Document