Population Dynamics

Population Dynamics

1. The population is currently increasing!

   • Every second 5 people are born and 2 people die
   • Population started to increase rapidly in 1950 due to advancements in technology

2. Population Change

   • Population Increase
     • Births - No Contraception
     • Immigration
     • Better Healthcare
     • Development of modern medicenes
     • Having hygienic Housing
   • Population Decrease
     • War
     • Use of contraception
     • Diseases
     • Lack of healhcare

3. Population Pyramids

   • Upright Triangle = Rapid Growth
   • Rectangle = Slow/Stable Grwoth
   • Upside Down Triangle = Negative Growth

4. Demographic Transition Model

   • DTM is a model or theory which shows how population growth occurs in a country over time
   • Limitations
     • Based on Western Countries
     • Don't count for dease, war or resources in LEDC's

5. Youthful and Old Populations

   • Youthful - Problems
     • Not having enough housing
     • Pressure on schools
     • Pressure on resources
     • Pressure on health care
   • Old - Problems
     • Pressure on health care - more beds and retirement homes
     • Don't have enough people at working age

6. Policies to control population

   • China's One Child Policy
     • Families advised to have one child
     • Anti-natalist
     • Pay heavy fines for having more than one baby
     • Enforced not Encouraged
   • Iran
     • Introduced an Anti-natalist policy as there population rate was at 3.2, and to help improve their economy and the status of women
     • In 1980, policy was abandoned and everyone was encouraged to have as many children as possible so they could have a 20 million man army
     • After 1986, policy was brought back as rapid population growth caused Iran to go into a depression