论文部分内容阅读
一、生育率与出生率生育率是指在一定时期内出生人数与育龄妇女(指15岁～49岁妇女)数之比。出生率是指在一定时期内出生人数与总人数之比。两者分子相同,分母不同。生育率是出生率的基础。生育率大于出生率。二、环境人口容量与适度人口适度人口(理想人口规模):最早是从经济、福利角度提出的。主要讨论的是区城最佳的人口规模或是理想人口规模,即一个地区的人口数量保持在多少才最适宜。环境人口容量(环境承载力):主要研究的是一个地区所能承受的最大人口容量。一般来说,一个国家或地区的适度人口应小于环境人口容量。譬如,目前我国最适宜人口数量为7亿左右,最大也就是极限人口数量为16亿左右。这里
First, the fertility rate and birth rate Fertility rate is the number of births within a certain period and the number of women of childbearing age (referring to 15-year-old to 49-year-old woman) the ratio. Birth rate is the ratio of the number of births to the total number of people within a certain period of time. The two are the same, denominator is different. Fertility is the birth rate. The birth rate is greater than the birth rate. II. Environmental Population Capacity and Moderate Population Moderate Population (ideal population size): The earliest is from economic and welfare perspectives. The main discussion is about the optimal population size or the ideal population size of a district city. That is, it is most appropriate to maintain the number of people in a region as much as possible. Environmental population capacity (environmental capacity): The main study is the capacity of a region can withstand the largest population. In general, a moderate population in a country or region should be less than the capacity of the environment. For example, at present, the most suitable population in our country is 700 million or so, and the maximum is about 1.6 billion. Here