经济因素 经济因素对人口自然增长的作用主要表现在它决定了人口的增殖条件

Economic factors The effect of <br>economic factors on the natural population growth is mainly manifested in that it determines the population's proliferation conditions and living conditions, and affects the natural population growth rate by changing the population's birth rate and mortality rate. Under normal circumstances, when the population cannot meet the needs of economic development for labor, the population's own reproduction will be stimulated; when the population exceeds the total consumption that economic development can provide, the population's own reproduction will be contained. At the level of modern productivity, the natural growth rate of the population tends to decline as the economic level increases. Economic factors also have an important impact on the population's mechanical growth. Under normal circumstances, regions with developed economies or rapid development rates have an attractive and cohesive force to the population, and the population's mechanical growth is positive; on the contrary, areas with economic backwardness or slow economic development will have a kind of exclusion for the population Force and discrete force, population mechanical growth is generally negative. <br><br>Cultural factors <br>this factor more impact on the natural population growth. With the improvement of the level of scientific literature, the natural population growth rate tends to decline. This trend is particularly obvious in modern society. Its performance is mainly in three aspects: first, because people extend the number of years of education, the average age of marriage will be delayed accordingly; Second, the more advanced the scientific and cultural level, the richer people's physiology, parenting, and health knowledge contribute to the reduction of infant mortality; third, the higher the scientific and cultural level of people, the more attention they pay to the improvement of their qualities and their offspring. , Fewer births and better education, the limited income is used to cultivate children into modern people with higher scientific and cultural qualities. <br><br>Health factors <br>of development and progress of medical science and health care has a direct impact on the birth rate and mortality. First, it reduces the mortality due to various diseases, thereby reducing the death rate of the population and extending the average life expectancy of the population; second, it has a positive effect on birth control and the implementation of eugenics.

经济因素<br> 经济因素对人口自然增长的作用主要表现在它决定了人口的增殖条件和生存条件，通过改变人口的出生率和死亡率来影响人口的自然增率。一般情况下，当人口数量不能满足经济发展对劳动力的需求时，人口自身的再生产必将会刺激；当人口数量超越了经济发展所能提供的消费总数后，人口自身的再生产必将受到遏制。在现代生产力水平下，人口的自然增长率往往随着经济水平的提高而下降。经济因素对人口机械增长也有重要影响。通常情况下，经济发达或发展速度较快的地区，对人口具有一种吸引力和凝聚力，人口机械增长为正值；相反，经济落后或经济发展速度缓慢的地区，对人口会产生一种排斥力和离散力，人口机械增长一般为负值。 <br><br>文化因素 <br>这一因素更多地影响着人口的自然增长。随着科学文学水平的提高，人口自然增长率趋于下降，现代社会里这一趋势尤为明显，其表现主要在三个方面：一是由于人们接受教育年限的延长，平均婚龄也会相应推延；二是科学文化水平愈发达，人们的生理知识、育儿知识、保健知识就愈丰富，促成婴儿死亡率降低；三是人们的科学文化水平愈高，就愈加注意自身及其后代各项素质的提高，少生优育，把有限的收入用于将子女培养成具有更高科学文化素质的现代人。 <br><br>医疗卫生因素 <br>医学的进步和医疗卫生事业的发展对人口出生率和死亡率有着直接影响。首先，它使得因各种疾病致死的死亡率下降，从而降低人口死亡率，延长人口平均寿命；其次，它对控制生育和实行优生优育有着积极的作用。

economic factors <br>The effect of economic factors on the natural growth of population mainly lies in that it determines the conditions of population proliferation and survival, and affects the natural growth rate of population by changing the birth rate and mortality rate of population. In general, when the population can not meet the demand of economic development for labor force, the reproduction of population itself will be stimulated; when the population exceeds the total consumption provided by economic development, the reproduction of population itself will be restrained. Under the level of modern productivity, the natural growth rate of population tends to decrease with the improvement of economic level. Economic factors also have an important impact on the growth of population machinery. Generally speaking, the regions with developed economy or rapid development speed have a kind of attraction and cohesion for population, and the population mechanical growth is positive; on the contrary, the regions with backward economy or slow economic development speed will produce a kind of exclusion and dispersion force for population, and the population mechanical growth is generally negative.<br>cultural factor <br>This factor has more influence on the natural growth of population. With the improvement of scientific literature level, the natural growth rate of population tends to decline, especially in modern society, which is manifested in three aspects: first, the average age of marriage will be postponed due to the extension of people's years of education; second, the more developed the scientific and cultural level, the more abundant people's physiological knowledge, parenting knowledge, and health care knowledge, which contributes to infant death Third, the higher the level of science and culture, the more attention will be paid to the improvement of their own and their offspring's quality, the fewer the birth and the better the education, and the limited income will be used to train their children into modern people with higher scientific and cultural quality.<br>Medical and health factors<br>The progress of medicine and the development of health care have a direct impact on the birth rate and mortality. First of all, it makes the death rate of all kinds of diseases decrease, so as to reduce the death rate of the population and extend the average life span of the population; second, it has a positive effect on the control of fertility and the implementation of eugenics.<br>