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Descrição
Mapa Mental por maddiemurchie23, atualizado more than 1 year ago
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Criado por maddiemurchie23
mais de 11 anos atrás
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The Demographic Transition Model
- Definition
- Suggests that all
countries pass through
similar DT stages or will
do given time
- Describes a sequence of changes over a
period of time, between BR's, DR's and
overall population
- Suggests that all
countries pass through
similar DT stages or will
do given time
- Advantages
- Gives us a good generalised picture
of population change over time
- Gives us a picture
for the future
- Easy to compare different
countries and their state of
development
- Gives us a good generalised picture
of population change over time
- Disadvantages
- Based on European countries (not LEDCs)
- Original model didn't
include stage 5
- Doesn't include migration,
major disasters, HIV or
government polies
- Doesn't give a timeline for
how long each stage might
take
- Based on European countries (not LEDCs)
- Stages
- Stage 1
- High stationary or pre-transition phase
- High death rates due to disease
- Consequently high birth
rates to increase chances of
survival
- Consequently high birth
rates to increase chances of
survival
- High stationary or pre-transition phase
- Stage 2
- Early expanding or early transition phase
- Death rate begins to decline with better living standards
- Birth rate remains high as children = labour
- Massive population growth
- Early expanding or early transition phase
- Stage 3
- Late expanding or
mid-transition phase
- Improved technology in agriculture and industry,
better education and birth-control
- Decline in birth and death rate
- Late expanding or
mid-transition phase
- Stage 4
- Low stationary or late transition phase
- Low levels of fertility and mortality
- Minimal growth
- Low stationary or late transition phase
- Stage 5
- Birth rates fall below
death rates
- Population decline
- Birth rates fall below
death rates
- Stage 1
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