试论煤炭城市人口自然结构的演化特征－以淮南、淮北市为例

以淮南,淮北两个典型煤炭城市为案例,对煤炭城市的人口增长机制进行了研究,采用不同年份的人口普查资料对其人口的自然结构及其演化特征进行了分析,在此基础上初步概括了煤炭城市人口自然结构演化的基本特征。

STUDY ON THE EVOLUTION LAWS OF THE POPULATION NATURAL STRUCTURE OF COAL-DEPENDENT CITIES IN CHINA -A CASE STUDY OF HUAINAN & HUAIBEI CITY

Coal-dependent city is important one of the classes of urban function in China.It's structures of population, industry and space are different from that of the other classes of cities.The population structure of coal-dependent city has special characteristics and evolution laws. This paper stress on the evolution laws of the population natural structure.The author take Huainan and Huaibei as the typical case and engaged in on-the-spot investigation.The study conclusion makes clear that in different development stages of the coal-dependent cities, the mechanism to cause population growth was changeable.In the primary stage,the development of coal industry supplied lots of employment opportunities for the young man labours, which caused many young men labors immigration from the rural to coal-dependent city.The increase of adult population percent caused "adult type" of the population composition by age.The population sex ratio imbalance was very serious. Many coal workers married with the rural women who will gradually immigrate from rural to cities, which caused the population sex ratio of the coal-dependent cities to decrease and make indirectly the population natural increase rate to rise.In this stage,the population composition by age was "young type". When the development scale of coal industry being stable,the immigrant cut down remarkably and the population natural increase rate decreased,also. The population composition by age was "adult type" once again and the population sex ratio inclines to normal level finally.