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Zero population growth
From Wikipedia, the free encyclopedia
- For the organization formerly known as Zero Population Growth, see Population Connection.
Zero Population Growth (ZPG) is a concept coined by American sociologist Kingsley Davis. It is a condition of demographic balance where population in a specified population neither grows nor declines.
Zero population growth is achieved when the birth rate of a population equals the death rate.
Zero population growth is often a goal of demographic planners and environmentalists who believe that reducing population growth is essential for the health of the ecosphere. However, achieving ZPG is difficult because a country's population growth is often determined by economic factors, incidence of poverty, etc.
However, even if there is Zero population growth, there may be changes in demographics of great importance to economic factors, such as changes in age distribution.
Zero population growth is achieved when the birth rate of a population equals in a situation where net migration is also zero ( No in and out migration or in and out migration are equal )
- Enviro, Population Movements Merge Goals for Healthier Planet
- World Watch Institute
- Northwest Environment Watch
- The "End of species" hypothesis Does demographic decline mark the end of humanity's life cycle? May ET civilizations follow the same path?
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