APHUG UNIT 2 - HEIMLER

Population distribution

How people are spread over a given area.

Population density

Number of people per unit area.

Arithmetic density

Total number of people divided by total land area.

Physiological density

Number of people per area of arable (farmable) land.

Carrying capacity

The maximum number of people that an area can sustainably support.

Population pyramids

Graphical representation of age-sex structure in a population.

Dependency ratio

Ratio of dependents (young + old) to working-age population.

Crude Birth Rate (CBR)

Births per 1,000 people per year.

Crude Death Rate (CDR)

Deaths per 1,000 people per year.

Rate of Natural Increase (RNI)

The difference between the Crude Birth Rate and Crude Death Rate.

Demographic Transition Model (DTM)

Model of how population growth changes as societies industrialize.

Malthusian Theory

The theory that population grows geometrically while food supply grows arithmetically, leading to eventual crisis.

Pronatalist policies

Policies that encourage more births.

Antinatalist policies

Policies that discourage high fertility.

Push factors

Unfavorable conditions that drive people away from a location.

Pull factors

Favorable conditions that attract people to a location.