GEOG-130 Lecture Notes - Lecture 8: Population Ageing
25 Sep 2020
School
Department
Course
Professor
Leo Ellis
Cultural Geography
Geog-130
Population issues: Aging
Population Aging: the process where the proportion of elderly people increases and the
proportion of young people decreases
- Median age of the population
Global population > 65 years
-1900:1
2011- 8%
2050: 20%
- Spatial Variation
Key factors in explaining population aging:
1. Declining fertility The base of the pyramid narrows
2. Declining mortality The pyramid stretches upwards
Spatial variations:
- Fertility o More developed world vs less developed world
- Life expectancy o Introduction of sanitation, better nutrition’s o Impact of aids
Consequences of an aging population
- A greater proportion of ‘Dependants’
- Greater Health Care needs
- Greater stress on social services(retirement benefits)
Summary/Conclusion
- Several theories help us to understand the rapid population growthof the last two
centuries
- - each conrbutes to our understanding of this ey process
Document Summary
Population aging: the process where the proportion of elderly people increases and the proportion of young people decreases. Key factors in explaining population aging: declining fertility. The base of the pyramid narrows: declining mortality. Fertility o more developed world vs less developed world. Life expectancy o introduction of sanitation, better nutrition"s o impact of aids. Several theories help us to understand the rapid population growthof the last two centuries. Each conrbutes to our understanding of this ey process. Consider: we all have our own geographies (classes, workplaces, different locations we interact with: the geographies of our experiences are unique to us, there are commonalities (workplaces, classes are the same) Consider: we all have different health status": everyone experiences different things a different times, commonalities with our health risks. The risks from environmental contamination are not uniform across space. Where you live affects your risk of disease or ill wealth. Access to basic resources is spatially differentiated.
