What does modern migration and population mobility mean?

Answer]: Connection: Population movement and population migration are two aspects of population movement, both of which refer to the movement of population within a certain spatial area or social range.

Differences: The definition of population migration is mainly considered in terms of time and space. (1) From the point of view of the time of lifting, the migrant's residence in the place of migration must exceed a certain period of time before it can be regarded as migration.

2) From a spatial point of view, it is generally considered that the process of population movement is the process of population movement when people change settlements across communities and live for a certain period of time. Relative to population migration, in a narrow sense, population movement refers to the non-sedentary movement of population in a certain space and within a certain time range. The meaning of the flow of human potatoes at the Lingkou includes the following basic elements:

First, it will not change its usual place of residence for a certain period of time; the second is to cross a certain geographical space; third, the residence in the inflow is temporary; Fourth, there is a willingness or behavior to go back and forth in the process of moving.

1 From the countryside to the city;

2 From a small city to a big city;

3. From urban areas to suburbs (suburbanization of large cities);

4. Entering the suburbs (urbanization of the suburbs, forming the "metropolitan area" of Wangxiang).

Form. Common forms of population movement are: Seasonal flows.

Such as nomadic and seasonal agricultural workers. The former goes to the alpine pastures every summer to graze and returns to the valley lowlands in the winter. The latter refers to going to the city or other rural areas to do temporary work during the slack season, and returning to the hometown to produce when the farm is busy; Daily sexual flow.

For example, the city is poor and blindly fighting the people.

commuting; Irregular flow. Such as tourism, etc. With the increase of economic income and spare time, the distance and frequency of people traveling for shopping, entertainment, and vacation are increasing day by day.

Modern immigration refers to the shift of populations from densely populated developing countries to industrial areas in developed countries after World War II, when there was a shortage of labor in industrialized countries. In terms of domestic migration, the population has mainly shifted from rural to urban areas. From declining cities to emerging industrial areas, it has shifted from areas with poor environmental conditions to areas with comfortable life and excellent environments.

In the past, most of them were new areas of development, mainly to the Americas, Oceania and Southeast Asia.

Answer C: This question examines migration. To belong to population migration, three major conditions must be met: first, crossing a certain administrative boundary (above the county level); second, it takes a long time (generally more than one year); The third is the change of place of settlement.

Answer C: This question examines migration. The basic conditions for judging population migration are: first, crossing a certain administrative boundary (above the county level); second, the change of place of residence; third, the general period of time is longer (more than one year); Therefore, item C is selected.