After the first five years the number of China's total population began to decrease net
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Original title: China dispute negative population growth inflection point early 2021 at the latest in 2030
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Although individual demographers have been sighted early warning, but a few years ago, negative population growth seems a distant thing. However, with more exposure and interpretation of demographic data, people suddenly found that population growth has been negative in the eyes.
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According to estimates of demographers, possibly as early as 2021 China will enter a negative population growth. This is a matter of five years.
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Negative population growth, quite literally, deaths over births population, the total population began to decrease net.
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Total fertility rate (TotalFertilityRate) is one commonly used measure of the level of fertility. It refers to the average number of women of childbearing age in children born. China's total fertility rate from the early 90s of last century, generations fell below the replacement level,cappelli obey, then all the way to reduce, it is now as low as 1.4 (scholars believe that part of the population is 1.3 or 1.2) is low.
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For a total fertility rate below the replacement level of 2.1 per female generation lifetime average 2.1 children,louboutin escarpins, the number of births and deaths of roughly the same region, negative population growth is inevitable. The difference is only negative population growth soon how fast.
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HUANG Wen - zheng demographers have calculated that, with respect to the replacement level of 2.2,louboutin mariage, the total fertility rate of 1.4 means that one generation (25-30 years) will shrink by 36% the number of births at intervals of two generations would shrink 60%. This is a terrible speed.
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To determine which year of negative population growth in coming,piumini peuterey, that it is not complicated. According to the total fertility rate and the number of women of childbearing age, we can calculate the approximate number of annual births, deaths and generally relatively stable, find deaths equal to the population born population peak point can be determined and the point in time of negative growth began.
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Certainly not so simple, because the number of variables to consider. For example,nike air max pas cher, the total fertility rate,scarpe hogan uomo, which is a variation amount of the policy change will have an impact on it. For example, after the implementation of a comprehensive two-child policy, the total fertility rate may have some impact. Specifically the extent of impact, the results of different estimates of scholars are not the same. Another example is the death of the population,cartier occhiali da sole, also taking into account the increase in life expectancy and other factors.
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In any case,louboutin pigalle prix boutique, to determine the point of negative population growth is not impossible. Negative population growth for China at present judgment as much as four or five versions.
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First, the United Nations' World Population Prospects 2010 Revision,escarpin louboutin occasion, "Analyzing Chinese population peaks at 1.396 billion people, negative population growth occurred in 2027.
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The second is the State Planning Commission approved the version of the Guardian,louboutin homme, the population peak at 1.45 billion people, negative population growth occurred in 2030.
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The third version is the Chinese Academy of Social Sciences, Institute of Population and Labor Economics scholar Wang Guangzhou population estimates,?chaussures louboutin, the population peak is not more than 1.42 billion people, negative population growth occurs around 2028.
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The fourth version of demographers and James Liang HUANG Wen - zheng made. They believe that China's population peak is not more than 1.42 billion people,chaussure nike, negative population growth could be between 2021-2025 appeared.
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The fifth version of demographers Yaomei Xiong, he judged negative population growth is likely to appear in 2023, as the population peak, he believes a comprehensive two-child policy since the liberalization of the impact in the end can not yet tell how much, it is difficult to judge how the population peak high. However, even if born in order to increase the population and start now to strongly encourage the Second Child, a peak population and certainly not more than 1.48 billion people.
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China is the biggest crisis the population structure distortion accompanied by negative population growth,magasin louboutin, advanced age declining birthrate and gender imbalance. Over the past four decades,parka woolrich, China's population is not only the total fertility rate all the way down, Chinese people's willingness fertility is very low, the population of children aged 0 to 14 is continuing to decrease.
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This means that the future of China's labor force, especially young adults will greatly reduce the labor supply, pension insurance will pay a serious shortage, from production to consumption, from employment to retirement, will face a great challenge.
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