长江流域城市发展的个性与共性问题

建国50年来，长江流域各大、中、小城市发生了巨大的变化，特别是城市经济实力、城市性质与功能结构，城市生态环境以及区域城镇体系等产生了质的飞跃，向着更高层次的城市战略目标发展。从本流域各个城市发展过程与现状特征分析，具有五个比较鲜明的个性与共性问题，共同构成了长江流域城市化的特征与趋势。着重阐述了五个特征：①城市化的速度、比例各省具有自己鲜明的特征；②流域内各省城市空间结构有自己的特点；③城市发展条件与形态有自己的个性；；④市用地的 结构性特点；⑤流域内各大中城市的合理发展模式。

INDIVIDUALITY AND COMMONNESS OF THE URBAN DEVELOPMENT IN THE YANGTZE BASIN

Over the last 50 years, especially since the introduction of thereforming and opening policy, significant changes have taken place in many large, medium and small cities in the Yangtze Basin. The actual strength of urban economy, urban ecological environment and urban system in this region has resulted in a great advance of the cities in quality. After analyzing the process of city development and the present characters of the cities in this basin, the following five distinctive problems with values of either individuality or commonness have been identified: 1 )the difference in urbanization speed and city proportion in different provinces, 2)the features in spatial structure of the cities, 3)the development condition of cities and their individual roles, 4)the rational evaluation and countermeasures for the land use, and the changes of proportion on constructive land engrossing arable land in lower and middle Changjiang River (Yangtze River), and 5) the rational development patterns for cities of different sizes.