Spatial Evolving Track and Influence Factor Analysis of Beijing Tianjin and Hebei Metropolitan Area;

Study on the development of big cities and the formation of metropolitan areas in China;

The Delineation of Metropolitan Areas in the United States and Canada and Its Implication for China;

Network of Polycentric Metropolis in Europe:Introduction of the Po/ycentnc Metropolis,Learning from Mega-city Regions in Europe;

As a density area of population, metropolis has sharp contradictory between population and eco-environment.

With the methods of principal component analysis and the cluster analysis, 238 counties, cities and districts in the Yangtze areas were explored of the structure features and spatial organi- zations of metropolis.

Based on summarizing the acid rain research status abroad and the acid rain research outcomes of our country, this study investigated systemically on the time and space distribution of the precipitation's pH and chemical composition in Chengdu urban area using the particular and integrated precipitation monitoring data of Chengdu urban area during the period from 1989 to 2000.

The Centennial History of Standards for Defining the Metropolitan Areas in America;

Study on the Concept and Definition of Metropolitan Areas;

Metropolitan Green Space System: the Basic Factor to Balance the Spatial Structure of Metropolitan Areas;

Based on the theories of new institu-tional economics,this paper analyzes the correlativity between the decentralization and the development of Chinese metropolitan areas,and divides the develop-ment of Chinese metropolitan areas into two periods in the perspective of urban institution.

In order to analyze the evolution of economical factors of the Jiangsu s metropolitan area along Yangtze River,this paper developed Uniformity Index which emphasized studies of the dynamic evolution relationship of the inter-city s economical factors.

In order to research and express the inter-action trend of regional urban economy, society and space, the analysis of agglomeration and fragmentation emphasized the dynamic evolution relationship of the inter-units, especially of the inter-cities in the metropolitan area.