On the premise of ensuring rational development and utilization of resources and good protection of the ecological environment, the number of people that the regional resource and environmental conditions can support

natural resource status

Social economic and technological development level

per capita consumption level

The concept is based on a reasonable lifestyle, ensuring a healthy living standard, and at the same time, without hindering the quality of life of the future population, the most suitable population number for a country or region

resource issues

Environmental issues

Social Issues

Governments of various countries, especially developing countries, try their best to control the population within a reasonable size

Establish a fair international order; respect the objective laws of coordinated development of man and land, and formulate sustainable development strategies for the region in accordance with local conditions.

It is of great significance for formulating the population strategy and population policy of a region or a country, which in turn affects the economic and social development of the region.

What is emphasized is the maximum population (limit population) that a country or region's resources and environment can support - it is a warning value

The emphasis is on the appropriate population (optimal population) under the premise of promoting sustainable development - it is a reasonable value

Environmental population capacity > reasonable population capacity

press hemisphere

by latitude

According to distance from the ocean

by altitude

by region

by continent

by country

terrain

climate

water source

soil

mineral

Productivity levels and social production methods

transportation conditions

Political Culture

Population migration causes changes in the population of a certain area. This change in population is called mechanical population growth.

When the regional population mechanical growth rate is positive, the area is a net population in-migration area.

When the regional population mechanical growth rate is negative, the area is a net population outmigration area.

Changes in the population of a country or region are determined by both natural population growth and mechanical growth.

The driving force of population migration is composed of the push (repulsive force) of the place of migration and the pull (attraction) of the place of migration.

In any region, there are both push factors that encourage people to move out and pull factors that attract people to move in.

Different people often consider different factors when making migration decisions

natural factors

Human factors

Place of emigration

Place of immigration

For the place of emigration, the emigration of a large number of young and middle-aged labor force will reduce the proportion of its young and middle-aged population and intensify the aging of the population.

For the destination, the immigration of a large number of young and middle-aged labor force will increase the proportion of young and middle-aged people and reduce the aging of the population.

A large number of rural people have moved into cities and towns, injecting vitality into cities and promoting the development of urban economy.

With the expansion of population size, the size of urban land has also continued to expand, and the layout of urban functional areas has also changed. Residential quarters have continued to appear in suburbs, promoting the process of suburban urbanization.

Along with population migration, the demand for different occupations will increase