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Published byLynn Fox Modified over 7 years ago
HUMAN POPULATION MPHO SEFATSA RHODES UNIVERSITY PSYCHOLOGY (Hons.)
OVERVIEW O Why study human population O World population projections O Population issues O Influence of human population on the planet O Challenges influenced by human population O Possible interventions
HUMAN POPULATION O Carrying capacity - “Ability of an area to sustain a particular number of a population without significant negative impacts.” O Overpopulation - Maximum number increasing carrying capacity
WHY STUDY HUMAN POPULATION O To understand the relationship between population variables: -social -environmental -economic -geographical
PROJECTED POPULATION O World population: 1990 – 1,633bn 2010 – 6,812bn 2012 – 7bn O 2050: 9, 202, 458, 484
POPULATIONS ACROSS THE GLOBE Figure showing population rates amongst countries
POPULATION ISSUES Social Environmental Economic Political
HUMAN INFLUENCE ON THE PLANET O Depletion of natural resources O Land degradation O Pollution O Increase poverty O Affects the ability of nature to sustain itself
CHALLENGES O Demand for energy and natural resourses O Food security O Biodiversity loss O Water quality and demand management O Human capacity O Climate change
POSSIBLE INTERVENTIONS O Education O Job creation O Improve water quality O Reduce carbon footprint O Balance the demand for energy O Contraceptive
SUMMARY O Population growth has a negative effect on the environment O Overpopulation poses a lot of threats to the environment, thus there is slight imbalance in the ecosystem. O Implementing practical interventions can help us control population growth to a steady rate
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