APHUG Martin Period 2
3. Natural Increase/Fertility/Mortality
Where is the world’s population increasing and decreasing?
What do these measures tell us about a country’s population?
What kind of general trends can we develop using these trends?
Natural Increase – the percentage by which the population grows each year.
(The crude birth rate minus the crude death rate)
Fertility- measures the number of births in a society; average number of children a woman will throughout her childbearing years.
Mortality- the infant mortality is the annual number of deaths of infants under one year of age compared with total live births.
MDC’s have a negative/neutral or low increase rate. LDC’s have a positive or high increase rate. The figures vary between LDC’s and MDC’s.
The TFR exceed 6 of Sub-Saharn Africa compared to two or less in European countries.
The highest IMR rates are in the poorest countries whereas the lower rates are in countries like Western Europe.
It is known that the population is increasing in LDC’s such as countries located in Africa. The population is not really decreasing but in other countries such as MDC’s the population is increasing at a slower rate.
These measures help us realize the density of population in a country, it also tells us what stage the country is in, in the demographic transition.