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Updated: Oct 25, 2025
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Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling
Published on: July 4, 2007
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Population dynamics and environmental quality in Africa
Stephen Kelechi Dimnwobi1, Chukwunonso Ekesiobi2, Chekwube V Madichie3
1Department of Economics, Nnamdi Azikiwe University, Anambra State, Nigeria.
The Science of the Total Environment
|August 4, 2021
Summary
Population growth, density, age structure, GDP, energy use, and trade all worsen environmental degradation in populous African nations. Urbanization showed no significant impact, highlighting the need for policies addressing population expansion and environmental quality.
Area of Science:
- Environmental Science
- Demography
- Economics
Background:
- Population dynamics significantly influence environmental degradation.
- Carbon emissions, often used as a proxy, fail to capture the multifaceted nature of environmental issues.
- Ecological footprint offers a more dynamic and comprehensive measure of environmental quality.
Purpose of the Study:
- To investigate the population-environmental degradation hypothesis in five populous African countries.
- To analyze the impact of population growth, density, age structure, urbanization, economic factors, energy consumption, and trade openness on environmental degradation.
- To utilize the ecological footprint as a key indicator of environmental quality.
Main Methods:
- Panel data from 1990-2019 for DR Congo, Ethiopia, Nigeria, South Africa, and Tanzania.
- Cross-sectionally Augmented autoregressive distributed lag (CS-ARDL) model employed for analysis.
- Key variables: ecological footprint per capita (ECFP), population growth rate (POPG), population density (POPD), urban population growth rate (URBN), age structure (AGES), per capita GDP growth rate (PGDP), energy consumption (ENEC), and trade openness (TRAD).
Main Results:
- Population growth rate (POPG), population density (POPD), age structure (AGES), per capita GDP growth (PGDP), energy consumption (ENEC), and trade openness (TRAD) were found to significantly increase environmental degradation.
- Urban population growth rate (URBN) did not show a significant influence on environmental degradation in the selected countries.
- The ecological footprint (ECFP) served as a robust measure for environmental degradation.
Conclusions:
- Population-related factors and economic activities are key drivers of environmental degradation in populous African nations.
- Targeted policies are necessary to manage population expansion and mitigate its environmental impact.
- Future research could explore specific policy interventions for improving environmental quality in the region.
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