Population Geography : Population Geography Demographic Transition
Demographic Transition Model : Demographic Transition Model Model that describes the natural patterns of population and how those patterns are impacted by economic developments.
Uses of the Model : Uses of the Model To study population over time
Insight to issues of migration, fertility, economic development, industrialization, urbanization, labor, politics and women
It provides a picture of the population dynamics and economic context for a country
It provides predictive capability.
It provide insight to the economic history of a place
Understanding the Graph : Understanding the Graph High Birth Rates
High Death Rates
Low RNI High Birth Rates
Declining Death Rates
Increasing Life Expectancy
Increasing NRI Slowly Declining Birth Rates
Leveling of Death Rates
Moderating of NRI Low & Variable Birth Rates
Low Constant Death Rates
Low NRI
Stage 1 : Stage 1 Characterized by pre-agricultural societies.
Subsistence agriculture and tranhumance.
Migrating to follow food sources.
Little population growth due to HIGH Birth and Death Rates
High Infant and Child Mortality
Stage 2 : Stage 2 Agriculturally based societies with cultivation and livestock.
High Birth Rates are maintained for farm labor.
Death Rates decline due to better nutrition and settlement patterns and diminished migration.
Stage 3 : Stage 3 Manufacturing –based countries
Industrialization
Urbanization
Decreasing Birth Rates
Continually decreasing and leveling off of death rates.
Increasing Life Expectancy
Stage 4 : Stage 4 Birth Rates decline to meet death rates.
Birth rates are more variable
Death rates a generally constant
Resulting in minor population growth or declines.
Movement from an Industrial to Service-based economy
ZPG (Zero Population Growth)
S-Curve and Model Predictions : S-Curve and Model Predictions The population curve indicates that global population will one day maximize and level off.
The prediction is somewhere around 10 billion people and around 2060.
Demographic Transition Around the World : Demographic Transition Around the World
Population Geography : Population Geography Population Pyramids
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