what the change also can create a large number of population is migratory. Be like our country special economic zone establish, attracted the ingoing of a large number of population.
2, the development of traffic and communication, narrowed relatively the distance between the area, reduced all sorts of difficulty with cloggy migratory population, those who promoted population is migratory. Since nearly a few centuries, the mankind is more and more large-scale, big range, big of span migratory concern with this.
3, cultural and educational work, the life attitude that development changed people and life expectation, also changed people to know the attitude of the outer world, what promoted population thereby is migratory.
4, marriage and family, marriage is the main factor; with influence youth migratory population and domestic element (if implementation family reunites) be in of minor and old people mouth migratory in having main effect.
1, policy, concern population especially migratory policy carry out
Sound policy can promote population migratory and reasonable normal ground has the policy with unreasonable; , or policy is sound but the measure of executive policy is unreasonable, can produce contrary result.
2, war, it is the destruction of normal to the mankind surroundings and order, often cause population migratory.
For example: During World War II, european mouth is migratory reach 30 million person. 20 centuries end happens in the tribe war of area of African Rwanda, Congo, the conflict of area of European the Balkan peninsula, cause population migratory amount is same with millions plan.
3, politics changes, a country changes politically, the change of political center.
The influence with migratory to population environment
Period the reason with main migratory ambient conditions
Collect and chase period lives the immediate impact that development accepts an environment, especially plant fructification distributings with prey seek food
Object of production of agriculture of agricultural civilization society basically is land, land cannot move the gender makes agricultural population stabilizes; to search new land relatively
Population grows, land is relatively insufficient, make population migratory.
Industrial civilization society is ultimate on changed the condition that manacles labour force on land. The constant change that industry produces a condition
Subject of labor and data of labor of industrial production demand, labour force and
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