SOCI 210 Chapter Notes - Chapter 20: Concentric Zone Model, Population Connection, Infant Mortality
19 Dec 2018
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Fertility rate, mortality rate, and migration affect population. Growth rate = (current - initial) / initial x 100. Population composition made up of sex ratio and population pyramid (distribution by sex and age) Malthusian theory: 3 factors to control population. Thought eventually food would run out starvation war manageable pop. Zero population growth: privileged people use up/pollute a number of environmental resources. Number of people entering (birth/immigration) = number of people leaving (death/emigration) Cornucopian theory: human ingenuity can resolve any issues. Ex. if people need more food agricultural scientists will figure it out. Demographic transition theory: future population growth develop along 4 stage model. Stage 1- birth, death, infant mortality rate high, life expectancy short. Begin to industrialize - stage 2- birth higher than infant mortality , life expectancy up. Industrialized - stage 3- birth rate down, life expectancy up, death rate down. Post industrial - stage 4 - birth and death rate low, people healthier, live longer, population stability.
