Population Dynamics Flashcards
Push factor
A force that drives people away from a place
- example of push factor would be pushing people from a place affected by war or poverty or factors such as climate and weather
Key factors that have influenced population since 1950
War
The availability to immigrate
Improvement in medical equipment expanding life expectancy
Stage 5
-very low birth rate and death rate
- natural increase is 0 and the population is beginning to natural decrease
-Japan and Germany
High levels of education
Later marriages
Improved status of women in terms of education and income
Reliable food supply with good nutrition for the population
Demographic transition model
A general. Odell of population, change which covers four to five stage
Natural increase
The difference between crude birth rate and crude death rate of a population, with birth exceeding deaths, usually expressed as a percentage
-does not include migration
Mortality rate
Number of deaths that occurred within a population
Evaluation of the relevance of Malthus theory today
Ongoing evidence that population will outstrip resources. This is evident in the sub-Saharan Africa, were food production has fallen behind population population increase. Kenya and Cameroon
- population control advocates often taken up Malthus viewpoints. Restrictions the number of children a couple can have, would help reduce the pressure on existing and future resource use, as well as food supplies
- China’s one child policy
Outflow
Outflow is the movement out of a country.
Reasons behind out flow include
War, poverty
Natural landscape, climate, land degradation
Stage 4
Low death rate and birth rate -it has a stable or slowly natural increase - Australia, USA, France Why a country at this stage Highlevel sanitation High level education Stable democratic government Separation of religion and state
Population dynamics
A branch of knowledge concerned with the sizes of populations and the factors involved in their maintenance, decline or expansion
Inflow
Is the movement into a country
Reasons behind
- economic opportunities, safe environment
-climate is more suitable
Life expectancy
The average number of years a person might be expected to live from any age, but usually birth
Birth rate
Also know as crude birth rTe, the number of births in a total population in a year, given as a rate per 1000 people
Ageing populations
When 7-14 percent of the population are over 65 years old
-Japan
Factors impacting population distribution
ENVIRONMENTAL
Access to drinking water and arable land affects
- Agriculture land use