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Decoding Population Pyramids: Shapes, Reading, and Importance

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tbreckenridge
18 diapositives · 487 Views · Jan 08, 2020

Understand the significance of population pyramids, how to read them, and the different shapes indicating growth patterns. Explore examples from India, Indonesia, Malaysia, the Netherlands, and Hong Kong. Learn how these pyramids provide insights for policy planning and country comparisons.

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  1. POPULATION PYRAMIDS

  2. Objectives • WHAT is a population pyramid? • HOW to read a population pyramid? • Recognise SHAPESof population pyramids. • IMPORTANCE of population pyramids.

  3. What is a population pyramid? • It is a diagram that gives information about the proportion of males and females in each age group. • Also shows: - proportion of young people (0 -14 ) - proportion of working people (15 – 59) - proportion of elderly people (60+)

  4. What is a population pyramid? Vertical Axis - Age Groups Elderly dependents Working population Young dependents Horizontal Axis – Percentage / number

  5. How to read a population pyramid? • Read the title e.g. country or city or racial group • Comment on general shape of the pyramid • Note the proportion of people in various age groups • Note the sex ratio • Interpret the data

  6. Types of Population Pyramid • Expansive: rapid growth • Stationary: slow/stable growth • Constrictive: negative growth Shape of pyramids is controlled by • births, • deaths, & • migrations.

  7. Expansive Pyramid(Triangular Shaped Pyramid)

  8. Expansive Pyramid Title: India, 2000 Shape: Broad Base - high birth rates Narrow Top - small elderly pop - high death rate Proportion: Large proportion of young Sex Ratio: Balanced sex ratio

  9. Indonesia 2000 Malaysia 2000

  10. Stationary Pyramid

  11. Stationary Pyramid Title: Netherlands, 2000 Shape: Straight shape 14 yrs – 0 yrs Slow or no Population Growth - Low Birth Rates - Life-expectancy is high - Low death rates Proportion: Bars of equal length - Balance Proportion Sex Ratio: Balanced Sex Ratio

  12. Netherlands 2000

  13. Constrictive Pyramid

  14. Constrictive Pyramid Title: Hong Kong, 2000 Shape: Rocket-shaped / Narrow Base – Low Birth Rates, Slow pop growth Proportion: Large proportion of working population, 15-59 yr old - large group of economically active pop Sex Ratio: Balanced pyramid

  15. Hong Kong 2000

  16. Expansive Stationary Constrictive

  17. Each pyramid tells a story about the past, present & futureof a country & its people.

  18. Importance of Population Pyramids • Policy Planning ~ future housing estates ~ future schools • ~ future jobs ~ future infrastructure • Comparison with other countries ~ developed (US) vs developing (India)