2019年9月，The U.S. Population Statistics Agency released the 2019 Population Survey Annual Social and Economic Supplementary Survey。根据该调查，less than 10%of Americans from less than 10%of 2018-2019 changed the place of residence in China，The lowest value since 1947。1947—1970年，The domestic migration ratio of the American population has not changed much，在20%上下浮动。自1981年起，The American population annual domestic migration ratio continues to decrease。Americans have always been known for "descendants of immigrants" and "love flow"，Why is the domestic population migration in the United States decreased in the past 30 years? Our reporter interviewed relevant scholars hereby。

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Professor Thomas cookies at the Department of Geography of Connecticut University in the United States and Regan M. MASS, Assistant Professor of Geographical and Environmental Research at the University of California State University Beiling Branch, In the article "Reason Interpretation Migration" proposed，The reason for people's migration is complex，In addition to seeking better career opportunities，家庭需求、社群状况、lifestyle and other factors Bet365 lotto review are playing a role。库克说，More than 20 years after studying the migration of the American population，He did not find that the reference factors of the American migration decision changed，But the overall changes in American society affect the migration decision，主要表现为以下几点。

First，20世纪80年代以来，The actual income of Americans except for high income class increases weak and even reduces it，Many people can only rely on work for a longer time、Apply for more loans to improve the quality of life。Increasing family and personal debt means that the difficulty of selling houses is rising，A decrease in economic resources required for migration。

　　第二，More women enter the labor market、The increase in the number of dual -employees' families also limits the migration，Because long -distance migration requires that the couple are moving in and found a suitable new job。而且，Couples that both sides work can use less time and energy to take care of young children，Migration and adapting to the new environment is more stressful for them。

third，在住房和就业市场上，The first generation of the post -war baby tide occupied a lot of opportunities，Insufficient opportunities left to young people。

　　第四，互联网、The popularization of information communication technology such as smartphones and other information has reduced the necessity of migration。Thanks to the developed information and communication technology，People can remotely contact bet365 live casino games more and more work and education opportunities，Avoid the risks brought by migration at the same time。另外，The improvement of the convenience of information also allows people to migrate、Where can I make a more wise decision，Reduced the situation where the destination is not fully understood。

　　第五，The "regional" of the United States in recent years has been significantly enhanced。Residents of inland rural areas believe that they have been thrown off by the US economic and political system，Residents of large cities and coastal areas believe that rural areas are closed and backward，Both parties may not be reluctant to migrate to "another place"。

U.S. Think Tank Brukins Society Urban Project Policy Senior Researcher William H. Frey (William H. Frey) proposed，Although the trend of decline in domestic liquidity is reflected in the Americans of most ages，But the young people aged 18-34 are particularly highlighting。历史上，Americans at this age are the most liquid，They can drive the overall migration trend。然而，最近10多年里，The domestic migration ratio of this group decreases exceeding any other age stage。弗雷认为，Young people "do not move in place" and house prices in the United States are rising、Insufficient employment increase has a lot to do。

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　　在库克看来，The current low domestic liquidity of Americans may continue for a long time。Studies based on Aude Bernard, Bet365 app download a researcher at the University of Population Research Center of the University of Queensland, Australia，Migration has the characteristics of self -enhancement，The probability of migration of people who have experienced migration experience is higher，and people who have never had a migration experience or rarely migrate often feel that migration is high risk、昂贵、扰乱日常生活的，因此难以迈出这一步。而且，The longer a person lives in a certain place，For the residence of this place、工作、社群的依恋感就越强，也就更不愿离开。From this perspective，由于过去30多年里，The domestic liquidity of the United States is getting weaker，So Americans who grow up in this environment are now less likely to migrate，The possibility of migration of their children in the future is also less。

　　弗雷说，The trend of domestic migration in recent years may not be weakened to a certain extent in the future of domestic migration.。库克表示，Decreased domestic migration will have a huge impact on American society。积极的方面是，The strong attachment formed by living in one place for a long time will shape a closer community and social connection，This makes people when people have strong economic uncertainty，may be able to get social and economic support。消极的方面是，The decline in population liquidity may challenge the large enterprises and regional Bet365 app download economic development institutions，Because they need to find talents in the migration population to a large extent。在这样的情况下，The U.S. government needs to change the idea of ​​solving the problem of imbalance of regional economic development。Traditionally，The federal government and the state government have less intervention in the local labor market and the housing market。其理由是，国内流动性较强时，People migrate spontaneously from areas with less opportunities to regions with more opportunities。Now，随着迁移趋势变化，The federal government and the state government should shift more to the "place -based policy"，重视教育和培训，Industry that develops compatible with local resources and labor skills。

　　库克、Queen Belfaster University of Bellster, Ian Shuttlework, associate professor of the School of Environmental College of Nature and Establishing Environment, and the University of Newcastle University in Geography、Anthony Champion, Honorary Professor of the School of Political and Sociology, Anthony Champion, "Domestic Migration of Developed countries: our liquidity is declining? "Based on the United States、英国、澳大利亚、日本、瑞典、德国、Case in Italy，The long -term trend and reasons for the migration of domestic population migration in developed countries。三位学者谈到，The United States and Australia are traditional "immigration countries"，But since the late 20th bet365 Play online games century, the phenomenon of decreased domestic population migration。This may be explained as the population of these two countries after the rapid growth and turbulence of the 19th and the first half of the 20th century，Has "matured" and move closer to the average level of domestic migration in other countries。库克对本报记者说，What level of domestic population migration is relatively "ideal"、Domestic migration frequency and scale changes will cause problems such as national impacts.，经济学家、Federal banking system and policy agencies pay particular attention to this，但现有的研究非常有限，The definition standard for the "ideal" level of domestic population migration has not yet been formed。

Qian Pien told this reporter，即使同样是发达国家，The level and trend of the domestic population migration and trends in the country are not the same。例如，Sweden has always been a country with high liquidity，The country's domestic population migration at different space levels does not decrease，Even increased。Japan has recently belonged to a country with low liquidity，The domestic population migration trend is still down，This is with the United States、澳大利亚相似。可见，State research and multinational comparative research space in this area broad，且具有重要意义。First，Historically, domestic population migration has always been one of the bet365 best casino games important ways to match each other at the regional and sub -regional levels.，The decrease in domestic population migration may have a large negative effect on the labor market and economic performance。其次，The reduction of social liquidity in many countries has increasingly triggering people's concerns，This issue should be conducted in depth from the geographical level。已有研究显示，Fast -fast career rise is related to geographical liquidity at the regional level。最后，lower geographical liquidity may promote people more in their own small circle，导致社会隔离模式固化。These problems are worth further studies。