population reproduction

基本解释

Information Material production and the population reproduction, are the human social existence and the nature of the development.
物质资料的生产和人口本身的再生产，是人类社会存在和发展的本质。
An important part of social modernization, the modernization of population involves modernization in population reproduction, population quality and population structure.
人口现代化是现代化的重要组成部分。人口现代化主要包括人口再生产类型现代化、人口素质现代化和人口结构现代化。
Owing to the history of population reproduction & practice of strict control of its growth rate, the abject number of old people is large and the speed of population aging is rapid.
由于人口再生产的历史和大力控制人口过速增长的实践，中国老年人口的绝对量和人口老龄化的速度在世界上是首当其冲的。

Perhaps more technically, the family lines that focused on something other than reproduction died out as a fraction of the population.
FORBES: Lemin Wu, Economic Growth and Why Humanity Can't Have Nice Things