CH 4 Flashcards
Rate of Natural Increase (RNI)
The difference between the crude birth rate (CBR) and crude death rate (CDR) of a defined group of people. A high RNI can indicate rapid population growth…BUT because it does not take migration into accurate - it does not tell the WHOLE story of an areas growth or decline
Doubling time (DT)
The number of years in which a population growing at a certain rate with DOUBLE
Urbanization
The growth and development of cities
Malthusian Theory
Population growth theory developed by Thomas Malthus - who lived and worked in England in the late 1700s - he proposed the rising life expectancy and lower death rate would result in the worlds population growing exponentially - while food and production would grow more arithmetic (constant) rate. He proposed this would contribute to a food shortage and famine by the late 1800s
Exponential growth
Growth whose rate becomes ever more rapid in proportion to the growing total number in size
Arithmetic growth
A pattern of growth that increases as a constant amount per unit time
Overpopulation
Population that exceeds its sustainable size or carrying capacity
Neo-Malthusians
Raises concerns about sustainable use of the planet, claiming that Earths resources can only support a finite population
Demographic Transition Model (DTM)
A model of how the size of a population changes as a country develops its economy
Epidemiological Transition Model (ETM)
Describes changes in fertility, mortality, life expectancy, and population age distribution, largely as the result of changes in causes of death. EMT is an independent model - incorporating cause of death patterns to explain population growth and decline - does NOT correspond to the stages in the DTM
Antinatalist policies
Policies that discourage citizens from having children (contraceptive education, family planning support, financial incentives)
These government policies are a reaction to concerns about population growth exceeding resources. Goal - reduce risk of potential famine or disease due to overuse of natural resources and ensure there are sufficient schools, jobs, and services to support future population
Protagonist policies
Policies that encourage child birth and aim to accelerate population growth (tax breaks and flexible work hours, incentives that make it cheaper to have children)
These government policies are enacted for the following reasons: address aging population concerns, concerns about future workforce meeting future economic needs as older workers retire
Land degradation
Long-term damage to the soils ability to support life (example: soil exhaustion, deforestation)
Soil exhaustion
Depletion of nutrients in soil that has been farmed too long or too intensively
Deforestation
Clearing wood land for farming, homes, infrastructure