“Population Distribution & Density” http://www.youtube.com/watch?v=s9dFy6xBOBM. Population Distribution & Density. Global Geography 12. 3 World Population Trends. 1) The world population is continuously growing larger .
Global Geography 12
1) The world population is continuously growing larger.
2) There is a growing gap between less developed countries (LDCs) and more developed countries (MDCs):
- In 1900:
MDCs had 560 million people (34% of the world’s total population)
LDCs had 1.1 billion people (66% of the world’s total population)
- In 1990:
MDCs had 1.2 billion people (23% of the world’s total population)
LDCs had 4.1 billion people (77% of the world’s total population)
- In 2050:
it’s estimated that over 84% of the world’s people will live in less developed countries.
3) Urbanization: the growing movement of people from rural to urban areas.
- 1800: 5% of the world lived in urban areas
- 1998: 50% of the world lived in urban areas
- 2011: over 50% of the world lives in urban areas
Arithmetic Population Density:
This is technically the correct calculation though it may give an inaccurate impression.
Population of Canada = 33 891 000 people = approx. 3.68 people/km2 Canada’s Land Area 9 220 970 km2
Physiologic Population Density:
This shows a more accurate and meaningful density figure. It represents the number of people in a country relative to the area of cultivated land.
Population of Canada = 33 891 000 people = approx.74.5 people/km2 Canada’s Cultivated Area 455 000 km2
The location of a population and how people are arranged on land.
* Population distribution is closely linked to water, physical geography, and economic or political heartlands.
population: 193 364 000
area is 8 511 965 km2
area of its cultivated land approx. 595 838 km2
China has a land area of approximately 9 600 000 km2 and approximately 1 449 600 km2 of cultivated land. As of 2010 China had a population of approximately 1 354 148 000 people.
1) Calculate China’s arithmetic population density and physiologic population density. Show your work.
a) Arithmetic population density:
b) Physiologic population density:
2) Why may it be useful to calculate the physiologic population density of a country rather than using the arithmetic population density? Explain.
2 Types of Population Density