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Chapter 3 Population Geography - W.H. Freeman

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78 <strong>Chapter</strong> 3 <strong>Population</strong> <strong>Geography</strong><br />

Fertility Rate<br />

TFR<br />

180 140 100 60 20<br />

Under 2.1<br />

80<br />

80<br />

2.1–3.0<br />

3.1–4.0<br />

60<br />

4.1–5.0<br />

5.1–6.0<br />

40<br />

Over 6.0<br />

Not available<br />

20<br />

0<br />

140 120<br />

20<br />

0 1000 2000 mi.<br />

0 1000 2000 3000<br />

km<br />

Scale at latitude 35°<br />

Figure 3.4 The total fertility rate (TFR) in the<br />

world. The TFR indicates the average number of<br />

children born to women over their lifetimes. A rate of<br />

2.1 is needed to produce a stable population over<br />

the long run; below that, population will decline. Fast<br />

growth is associated with a TFR of 5.0 or higher.<br />

(Source: <strong>Population</strong> Reference Bureau.)<br />

Flat Polar Quartic<br />

equal area projection<br />

40<br />

100 80 60 40 20<br />

average of 35 years in the eighteenth century to 75 years or<br />

more at present. Yet birthrates did not fall so quickly, leading<br />

to a population explosion as fertility outpaced mortality.<br />

In Figure 3.7, this is shown in late stage 2 and early<br />

stage 3 of the model. Eventually, a decline in the birthrate<br />

followed the decline in the death rate, slowing population<br />

growth. An important reason leading to lower fertility levels<br />

involves the high cost of children in industrial societies,<br />

particularly because childhood itself becomes a prolonged<br />

period of economic dependence on parents. Finally, in<br />

Maps.com<br />

WH <strong>Freeman</strong> and Company Publishers<br />

Domosh/The Human Mosaic, 12e<br />

Perm Fig: 304<br />

Domosh_Fig3.04a - Total Fertility Rate<br />

April 20, 2011 - Final<br />

Cyan Magenta Yellow Black<br />

the postindustrial period, the demographic transition<br />

produced zero population growth or actual population<br />

decline (Figure 3.7, page 82, and Figure 3.8, pages 84–85).<br />

Achieving lower death rates is relatively cost effective,<br />

historically requiring little more than the provision of safe<br />

drinking water and vaccinations against common infectious<br />

disease. Lowering death rates tends to be uncontroversial<br />

and quickly achieved, demographically speaking.<br />

Getting birthrates to fall, however, can be far more difficult,<br />

especially for a government official who wants to be

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