noun
population dynamics; demographic changes
Refers to changes in population structure over time, including births, deaths, migration, and aging. Common in statistics, sociology, and policy contexts.
人口動態統計によると、出生率は過去最低を記録した。
According to vital statistics, the birth rate hit a record low.
この地域の人口動態は、高齢化と若年層の流出が特徴だ。
The population dynamics of this region are characterized by aging and the outflow of young people.