Demography pres part ii by dr najeeb (1)
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Demography pres part ii by dr najeeb (1) Presentation Transcript

  • 1. DEMOGRAPHY
  • 2. POPULATION PYRAMIDS Pictorial presentation of 3 Factors (Influence Population) Births Deaths Migration
  • 3. Features (Population Pyramids)In terms of its composition by:- Age, Sex Males (on Left side) Females (on Right side) Children (at bottom) Elders (at Top) Adjoining bars(contribution of each age, Sex group)
  • 4. EXAMPLE Developing Country Developed Countries (Pakistan) (Sweden)Base: Broad (High Birth rate) Base: Narrow (Low Birth rate)Top: Narrow / Acute apex Middle: Bulge (Convex border) (No: of Elders (Less) Top: Obtuse apex (More Elders)High Dependency rate Low Dependency rateBad effect (on Economy) Good effect (on Economy) Unproductive (Half Pop) Productive ( More than Half Pop) Under 15 Ys: ---- 44% Pop: Under 15 Ys: ---- 25% Pop: B/w 15- 64 Ys: 52% Pop: Above 15 Ys: ---- 75% Pop:
  • 5. PAKISTAN SWEDEN
  • 6. WORLD POPULATION
  • 7. PAKISTAN
  • 8. DEMOGRAPHIC CHARACTERISTICSPopulation unevenly distributed with very densely populated areas very sparsely populated areas. All countries in region have a positive rate of natural population change.
  • 9. DEMOGRAPHIC TRANSITIONGrowth Rate (%) Grading of population increase0 ( Zero) Stationary Growth (No Growth)0 to 0.5 Slow Growth0.5 to 1 Moderate Growth1 to 1.5 Rapid Growth1.5 to 2.0 Very Rapid Growth>2 Explosive Growth ( Population explosion) OR Population Bomb
  • 10. DEMOGRAPHIC TRANSITION 3 TYPES1. Old balance Fertility Mortality2. New balance Fertility Mortality3. ImbalanceFertility Mortality
  • 11. DEMOGRAPHIC CYCLE Germany, India in Hungary 1920 Many countries of India, China, S. Asia & Singapur Africa Pak in 1970