本文从论江浙二省之人口密度等著作中,研究了竺可桢早期人口地理学思想。

Zhu Keshen, being an eminent geographer, he concerned with the problem of population for a long time. The problem he studied may be fallen into three catalogues. (1)The population density of Jiangsu and Zhejiang provinces, (2) Comparison of the population thought of HongLiangji (1746-1809), a Qing scholar and of T.R.Malthus(1766-1834), and (3)Zhu considered that the rapid expansion of popnlation of Qing Dynasty between 1741-1851 A.D. was a result of the introducing these crops of high productivity, such as corns and sweet potatoes abroad. The former was an article published, and the latter two were found in his diary between 1936-1949, the last view was also supported by J.K.Fairbank, who expounded this view in his work entitled,《The United States and China》.These three topics are the most important problems of population researches of China until present.