GEOG 205 Lecture Notes - Lecture 3: Thomas Robert Malthus, Human Geography, Doubling Time
10 Apr 2017
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Most populous three in 2015, rounded up: china: 1. 36 billion. India: 1. 24 billion: us: 325 million (significantly smaller) Then indonesia, brazil, pakistan, nigeria, bangladesh, russia, japan. Top ten has more than half of world pop. Then mexico, philippines, egypt, vietnam, ethiopia, germany, iran, turkey, thailand, Arithmetic density: number of people per unit area (square mile or square kilometer) for total area of country. Population clusters: based on pop density, 3 major areas (east asia, south asia, europe) Crude birth rate (cbr) and total fertility rate (tfr) Number of births in one year per 1000 people. Densely populated areas can have low cbr (china, europe) while sparsely populated areas can have high cbr (east africa) Tfr: average number of children born per woman during all reproductive years (15 to 49) Replacement level: tfr needed for population to replace itself. For one couple, it is not 2. 0 but 2. 1: offsets the deaths of females before birthing and the deaths of children.
