Population Dynamics and Human Population. Part I: Population Dynamics.
HUMAN POPULATION
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HUMAN POPULATION MPHO SEFATSA RHODES UNIVERSITY PSYCHOLOGY (Hons.)
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HUMAN POPULATION. MPHO SEFATSA RHODES UNIVERSITY PSYCHOLOGY (Hons.). OVERVIEW. Why study human population World population projections Population issues Influence of human population on the planet Challenges influenced by human population Possible interventions. HUMAN POPULATION. - PowerPoint PPT Presentation
Transcript of HUMAN POPULATION
HUMAN POPULATION
MPHO SEFATSARHODES UNIVERSITYPSYCHOLOGY (Hons.)
OVERVIEWO Why study human populationO World population projectionsO Population issuesO Influence of human population on
the planetO Challenges influenced by human
populationO Possible interventions
HUMAN POPULATIONOCarrying capacity- “Ability of an area to sustain a
particular number of a population without significant negative impacts.”
OOverpopulation- 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
O2050:9, 202, 458, 484
POPULATIONS ACROSS THE GLOBE
Figure showing population rates amongst countries
Year Population Average annual growth rate (%)
Average annual population change
1950 2,556,517,137 1.47 37,798,160 1960 3,040,966,466 1.33 40,782,196 1970 3,708,751,360 2.07 77,391,102 1980 4,452,645,562 1.69 76,038,009 1990 5,282,765,827 1.58 84,050,074 2000 6,081,527,896 1.22 74,414,630 2010 6,825,750,456 1.10 75,688,866 2020 7,563,094,182 0.91 69,180,831 2030 8,206,457,382 0.72 58,925,303 2040 8,759,140,657 0.58 50,686,755 2050 9,224,375,956 ???????
Recorded and projected world population figures for the 100-year period 1950-2050
POPULATION ISSUES
SocialEnvironmen
talEconomicPolitical
HUMAN INFLUENCE ON THE PLANET
O Depletion of natural resourcesO Land degradationO PollutionO Increase poverty O Affects the ability of nature to
sustain itself
CHALLENGESO Demand for
energy and natural resourses
O Food securityO Biodiversity lossO Water quality and
demand management
O Human capacityO Climate change
POSSIBLE INTERVENTIONS
O EducationO Job creationO Improve water qualityO Reduce carbon footprintO Balance the demand for energyO Contraceptive
SUMMARYO Population growth has a negative
effect on the environmentO 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
