选取1990年、1995年、2000年,2005年和2010年珠江三角洲各城市数据,构建综合指标体系,利用全局主成分分析测算珠三角空间组织格局演变过程,提取珠三角空间组织格局演变的城市经济、物质空间和人口空间因子。研究发现:①珠三角空间组织格局经历"单中心"向"双中心"的演变过程,并开始呈现多中心网络化趋势;②城市区域空间组织经历缓速演变、加速演变和转型演变三个阶段,效率由低级向中、高级形态变化;③从全球化、区域化、市场化、城市化和分权化等维度来解释珠三角城市区域空间组织和效率格局演变的动力机制。建议从增强城市竞争力、推进空间均衡和加强资源环境协调等角度引导珠三角空间组织格局演变。

With the rapid urbanization and development in transitional urban China, the mega-region as a spatial type of resource integration and its successive spatial organizational patterns have played an increasingly important role in city-region development. This paper mainly reviews and summarizes the research on urban spatial organization from urban geography, urban and regional planning. In this research, using data from the year of 1990, 1995, 2000, 2005, and 2010 for the Pearl River Delta (PRD) mega-region, we attempt to establish a comprehensive index system to calculate the processes of spatial organization and structural patterns over the last 20 years by the method of Global Principal Component Analysis (GPCA). The results of the study show that the factors of urban economic, physical, and population have contributed significantly to evolutions of spatial organization. Furthermore, the PRD mega- regional spatial organization experienced monocentric (single-center), duocentric (double-center), and polycentric (multiple-center) development patterns throughout its development evolution. Finally, according to qualitative and quantitative analysis, this paper endeavors to explain the dynamic mechanism of spatial organization transitional processes and spatial structure patterns from the perspectives of five dimensions:globalization, regionalization, commercialization, urbanization, and decentralization.