What are the characteristics of the three growth models? What are the influencing factors of population migration?

(1) primitive type: high birth rate, high mortality rate and low natural growth rate;

(2) Traditional type: high birth rate, high mortality rate and low natural growth rate;

(3) Transitional type: high birth rate, low mortality rate and high natural growth rate;

(4) Modern type: low birth rate, low mortality rate and low natural growth rate.

Influencing factors of population migration:

natural environment factors

1. Climate not only directly affects people's health, but also affects the soil, vegetation and hydrology of a region, which has an important impact on human production and life.

2. The distribution and change of fresh water largely determines the spatial pattern of human life and production, thus determining the direction and scale of human migration.

3. Soil is an important condition affecting agricultural production.

4. Minerals are the basis of resource production, especially the development of manufacturing industry.

Socio-economic factors

1, economic factors: the main and often effective factors of population migration. The more the economy develops, the more the migration between regions is restricted by economic conditions.

In most cases, population migration is to pursue better economic income and thus have a better living standard. (2) Macroscopically, the change of economic layout will also cause the migration of a large number of people. For example, the establishment of special economic zones in China attracted a large number of people to move in.

2. The development of transportation and communication has relatively narrowed the distance between regions, reduced all kinds of difficulties that hinder population migration and promoted population migration. In recent centuries, more and more large-scale, large-scale and large-span migrations of human beings have been related to this.

3. The development of culture and education has changed people's attitudes and expectations towards life and the outside world, thus promoting population migration.

4. Marriage and family, marriage is the main factor affecting the migration of young people; Family factors (such as family reunion) play an important role in the migration of minors and the elderly.

5. Factors of environmental requirements. Due to environmental pollution, the living environment was affected and moved.

6. Relocation of administrative center.

Political factor

1, implementation of policies, especially population migration policies.

Reasonable policies can promote the reasonable and normal migration of population; Unreasonable policies, or reasonable policies but unreasonable measures to implement these policies, will have the opposite effect.

2. War destroys the normal living environment and order of human beings, and often causes population migration.

For example, during World War II, the population migration in Europe reached 30 million. At the end of the 20th century, tribal wars in Rwanda and Congo in Africa and conflicts in the Balkans in Europe also caused millions of people to migrate.

3. Political changes, political changes in a country and changes in the political center.