To address the question whether the abnormal SRB in urban China in the 1990s is a result of sex-selective childbearing of the migrant population,the paper compares SRB between rural permanent residents,urban permanent residents and urban migrant population by controlling a number of socio-demographic variables.

GIS based urban population spatial distribution model and application in Changchun;

The paper analyzed a lot of confusion on China s basic urban concepts such as "urban place" , "urban population" , "urban scale" and "urbanization" .

The relation of urbanization course and water resources use has been explored from urban population increase,urban industrial structure and urbanization course,and then the strategy for sustainable use of water resources,which fit in with urbanization development,is set up.

Up to the present time, Chinese publications still usecity non-agriculture population and city total popu-lation as the indexes for city population size.

According to the data and materials of gazetteers, this paper is trying to build models of City\|Population Degree of Jiangsu and points out that the percentage of city population, which is partly dependent on the number of city population, is mainly determined by the number of the total population in the area.

Port Development,Industry Development and Population Urbanization:A Case Study of Caofeidian Area;

The influencing factors and spatial distribution of population urbanization in China;