全面的分类与评述。
揭示了民国时期受到广泛关注的中国人口问题研究的多层面特征。
《人口研究》是由中华人民共和国教育部主管、中国人民大学主办、人口与发展研究中心承办的学术期刊。办刊历史1977年6月，《人口研究》创刊。
数据准确、详实。根据查询相关公开信息显示，东方杂志人口研究文章中的人口数据是各省市报送的数据，数据准确，对人口结构等数据进行各种维度的分析，内容详实，可信度高。杂志，有固定刊名，以期、卷、号或年、月为序，定期或不定期连续出版的印刷读物，它根据一定的编辑方针，将众多作者的作品汇集成册出版，定期出版的，又称期刊。
从现有的情况来看，人口总量增加的动力缺乏，越来越难，出生人口越来越少。发展的趋势，就是越来越接近于出生人口与死亡人口相交叉的边缘。
出生人口创下新低，有育龄妇女数量减少、疫情冲击等多种因素。这其中，疫情对去年生育产生了较大影响。人口学专业期刊《人口研究》发表的一篇文章《新冠肺炎疫情对中国出生人口变动影响》引发媒体关注。
该文章指出，2020年年初的疫情暴发严重抑制人们的生育计划，导致了年末的出生人口大幅下降。
人口增加率
根据《中国统计年鉴2021》公布的数据，我国人口在2017年突破14亿大关，达到140011万人，2018年达到140541万人，2019年达到141008万人，2020年达到141212万人。
也就是说，相比较前一年，2018年增加了530万人，2019年增加了467万人，2020年增加了204万人。
以上内容参考西部网-去年我国出生率跌破1%创43年来新低 学者分析“宝宝去哪儿了”
以上内容参考凤凰网-去年我国出生率跌破1% 创43年来新低
我认为人口科学更好一点。
其实关键在于你怎么选，你选自己喜欢和合适的。
因为人口科学更实在，更接近现实，更具有实用性，未来可以做的选择性会更多。
而人口研究更偏向学术类的，需要一定的沉淀和积累才能做出相应的成就出来。
According to the end of November 2000 the fifth national census showed that people over the age of 65 has reached 88.11 million ，which is 6.69% of the total population .There are 1.3 billion people that beyond 60 years old, about 10.2% of the total population. In accordance with the definition of an aging society, that is 60 years the proportion of the total population of more than 10%, or over 65 years the proportion of the total population of 7%. So early in the year 2000, China has begun to enter the old society.
why is there such a problem arise？
Population aging arises from two (possibly related) demographic effects: increasing longevity and declining fertility. An increase in longevity rises the average age of the population by increasing the numbers of surviving older people. A decline in fertility reduces the number of babies, and as the effect continues, the numbers of younger people in general also reduce. A possible third factor is migration.
These are root causes, however, every country has own factors to pose aging problem. In China, the one of reasons is family planning. In order to control the rapid population growth, reduce population pressure caused by economic and social development, since the 80's last century, the country's basic national policy of family planning, thus greatly reducing the fertility level of the whole society. And during the initial post-liberation period, the Chinese had a "baby boom". Every family wants to have children. It is common that our or five children, five or six. These children now have moved into old team, so the elderly have the possibility of further rapid increase.
On the other hand, the economic growth quickly, scientific and technological progress, the improvement of people's medical conditions and living standards improve, so that human health and longevity have made remarkable achievements, greatly extended life expectancy.
Of these two forces, the proportion of young population reduced. The final, proportion of elderly population grow. That is aging society.
