Population Concentrations
- 2/3 of world inhabitants are clustered in 4 regions
- East Asia, South Asia, Southeast Asia, and Europe, site and situation of population clusters
- low-lying areas with fertile soil and temperature climate
- near an ocean or near a river with easy access to an ocean
Sparsely Populated Regions
- humans avoid cluster in certain places
- dry, wet, cold, high lands
- too harsh places diminished over time
Population Density
- density can be computer 3 ways
- Arithmetic Density- total number of objects in area, divide populations by land area
- Physiological Density- number of people supported by a unit area of farmable land, divide population by farmable land
- Agricultural Density- ratio of number of farmers to amount of farmable land, divide population of farmers by farmable land
- Most places are industrial not farms
Components of Population Growth
- Geographers measure population change in a country or the world as a whole by using three measures
- Crude Birth Rate (CBR)- births per 1000 live births
- Crude Death Rate (CDR)- deaths per 1000 people
- Natural Increase Rate (NRI)- birth rate minus death rate
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