Population Flashcards
Population density
The number of people in a given area. The total population in a country or region divided by its area (people/km2).
Population distribution
The way people are spread out in an area
Crude birth rate
The number of births per 1000 people (CBR).
Crude death rate
The number of deaths per 1000 people (CDR).
Natural increase
The difference between the birth rate and death rate. A natural increase will occur if the birth rate is higher than the death rate. Natural increase = CBR – CDR.
Family planning
Where families receive advice about how to control births and access healthcare such as contraception.
Migration
The movement of people into an area
International migration
When people move from one place to another
Internal migration
Movement of people inside a country
Forced migration
When people are forced to leave an area due to natural disasters, war etc
Emigration
When people leave an area
Immigration
when people move into an area
Positive net migration
when more people move into an area than leave an area
Negative net migration
when more people leave an area than move into an area
Age dependency
Percentage of the population that depends on economic support (e.g., pension for the elderly, school for the young).
Population pyramids
The age & sex structure of a population can be shown in this type of graph, factors control the shape, birth & death rates & migration.
A population can be described as
Sparsely: Contains few people. Sparsely populated places tend to be difficult places to live. These are usually places with hostile environments
Densley: Contains many people. Places which are densely populated are habitable environments
Factors affecting population density
Relief (shape and height of land)
Resources
Climate
Political
Social
Economic
Uneven population distribution in China’s physical geography
CHINA’S PHYSICAL GEOGRAPHY:
● 90% of China’s population reside in the east of China.
The East:
● Has a coastline - meaning that land is flat and easy to build on and it provides opportunities for trade.
● Receives sufficient rainfall to allow crop growth.
The West:
● Is sparsely populated due to high relief - the west contains mountain ranges such as the Himalayas and Tibetan Plateau.
These areas are uninhabitable due to harsh weather conditions and steep land meaning it is
difficult to build.
The North:
● A large desert stretches The Gobi Desert is a cold desert - the climate is harsh and it is very dry meaning it is difficult to grow crops.
Uneven population distribution in China’s human geography
CHINA’S HUMAN GEOGRAPHY:
● Coastal cities the greatest range of jobs and higher-paid jobs in the tertiary sector.
● Land values in the coastal regions have risen, and manufacturing production has moved further inland.
● little jobs in western China, apart from extraction (primary sector).
● China’s development is very uneven. GDP per capita ranges in inland is $4000, $40,000+ in the eastern coastal regions.
Overpopulation
The resources cannot sustain the current population. Standards of living decrease because of:
Unemployment, pollution, degradation of the environment.
Underpopulation
The population cannot fully utilise the resources available. Low standard of living due to lack of utilisation of resources
Optimum population
The population is such that it can maximise the benefits from the resources available. High standards of living
CARRYING CAPACITY
The amount of people an area can support
Causes of overpopulation in Bangladesh
● Bangladesh (High population density) , 7th largest population in the world, 94th in land area.
● Few natural resources, rely on agriculture.
● High growth rate: High birth rates (23 per 1000) but death rates have fallen (5.7 per thousand),
● High birth rates due to 85% of the population are Muslim and some religious leaders do not allow contraception.
High primary labour (agriculture), birth rates are high so children can help work on farms
NOT ENOUGH RESOURCES
Impacts (consequences) of overpopulation in Bangladesh
● Live in dangerous flood-prone areas. Causing more than 1 million deaths in the last 200 years.
● 40% of the population is underemployed.
low wages working for just a few hours a week. GDP per capita is low at $1700 per person, low standards of living
● Not enough schools and hospitals.
48% of the population is literate and most people have no qualifications.
● Bad excess to healthcare meaning the infant mortality rate is 5.07%.