Chapter Two Flashcards
Carrying Capacity
The maximum population size of a species that the environment can sustain indefinitely, given the available resources such as food and water.
Overpopulation
Occurs when the number of people exceeds the capacity of the environment to support life at a decent standard of living.
Demography
The scientific study of population characteristics. Demographers look statistically at how people are distributed spatially by age, gender, occupation, fertility, health, and so on.
Census
The single most important data source for population geography.
Why is the Census controversial?
Non-participation and sampling.
Non-Participation
People who are homeless, ethnic minorities, and citizens of other countries who do not have proper immigration documents may be less likely to complete the census form. These individuals may fear that the census could turn over the forms to another government agency, such as the FBI or the Department of Homeland Security in the United States.
Sampling
Statistical sampling techniques can be utilized to get a more accurate count as well as to identify detailed characteristics of people, housing, and businesses. The U.S. Supreme Court has ruled that sampling may not be used to redraw Congressional district boundaries. Politicians sympathetic to the needs of people who are homeless and immigrants have been especially vocal in support of sampling, whereas those from small towns and rural areas, where the census count is more accurate, are more inclined to oppose it.
Two Thirds of World’s population are in what four regions?
East Asia, South Asia, Europe, and Southeast Asia.
Ecumene
The portion of Earth’s surface occupied by permanent human settlement.
Arithmetic Density
The total number of objects in an area. To compute the arithmetic density, divide the population by the land area.
Arable Land
Land suited for agriculture.
Physiological Density
The number of people per unit area of arable land.
Agricultural Density
The ratio of the number of farmers to the amount of arable land.
Natural Increase Rate (NIR)
The percentage by which a population grows in a year.
Doubling Time
The number of years needed to double a population, assuming a constant rate of natural increase.