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2.3 Internal Migration(内部移民、人口流动)

2008年09月16日  所属:美国概况  来源:南京航空航天大学  作者:南京航空航天大学

美国概况:第二章:人口:内部移民(人口流动)。

美国概况:Chapter 2: Population :2.3. Internal Migration

      Americans are and have always been a highly mobile people. What factors cause them to move? The desire for economic betterment is generally the most important force inducing migration.

Thus the volume and direction of migration are usually determined by geographic difference in economic opportunity, as reflected by such factors as differences in employment opportunities and earning power for workers and differences in the availability and the price of land for farmers. This is not to deny the role of noneconomic factors, such as climate, racial attitudes, and family ties, in influencing migration. Here is a case showing clearly the trend of migration in the country. When New England was declining in textile industry, there were many people moving out of it. When California has the phenomenal growth of the aircraft, motion picture, and electronic industry, there is a large scale of in-migration to the state.

      Since 1970, there has appeared a new trend of migration in the United States. Moreland more Americans migrated from cities to suburbs or nonmetropolitan areas. There are several factors for this phenomenon.  

The widespread use of automobiles and the construction of express highways made it possible for people to live farther away from their jobs. The telephone reduced the need for them to work or live in close proximity to one another. Besides these economic and technological changes, important social factors were involved. Suburban areas offered more living space than cities, lower crime rates, less pollution, and superior schools. It is generally believed that they are a better place for raising children. Many middle- income families now live in the suburbs. This new trend in migration prevailed in all regions except the South, where the metropolitan areas had the highest growth rate of population. Despite the new trend in migration, about 70 percent of American population are still living in metropolitan areas.


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