Why is the population of Shihezi getting smaller and smaller?

Population (English: population) is a social entity with complex content and comprehensive social relations, with gender, age and natural composition, various social composition and social relations, and economic composition and economic relations. It is the synthesis of a certain number of individuals, emphasizing scale. The birth, death and marriage of population are related to family relations, economic relations, political relations and social relations, and all social activities, social relations, social phenomena and social problems are related to the process of population development.

The population can be divided into urban population and rural population according to the place of residence, and can also be divided into different groups according to age, gender, occupation and department composition. Population is the necessary condition of social material life and the basis and subject of all social production behaviors. Due to different social conditions, different levels of economic development and different population development processes, people's understanding and reflection on population phenomena are also different, so every society has its corresponding population thoughts and theories.

Generally speaking, it refers to the spatial flow of population between two regions, which usually involves the permanent or long-term change of population residence from the place of emigration to the place of emigration. Economic reasons are the main reasons in population migration, such as getting rid of poverty and unemployment, improving life, or getting rich and seeking career success. In addition, politics, religion, culture, war and famine may also lead to immigration. The direct consequences of population migration are manifested in the different influences on the population, gender and age composition of the emigration place and the immigration place.

Generally speaking, there are more men than women, and young people are more than children and the elderly. From the indirect economic and social consequences, the population pressure in the emigration area is reduced, and remittance income may be obtained, but the labor force is reduced, especially the skilled and highly educated labor force moves out, which makes the expenses of raising and education in the emigration area suffer huge losses. For immigrant areas, due to the increase of population and labor force, it is economically beneficial, but it may also bring other social problems.

Political factors have a special influence on population migration. Among them, policy, political changes and war are important influencing factors. A country's policies, especially those related to population migration, will have an important impact on population migration. Reasonable policies can promote the reasonable and normal migration of population; But if the policy is unreasonable, or the measures to implement it are unreasonable, it may have the opposite effect.

War destroys the normal living environment of human beings and often leads to population migration. For example, during the Second World War, the population migration caused by war in Europe reached 30 million. Tribal wars in Africa, Rwanda and Congo at the end of the 20th century caused millions of people to migrate.