中文摘要：

基于1992-2012年城市夜间灯光数据，运用城市位序规模法则、加权标；住差椭圆和探索性空间数据分析等方法．对成渝城市群空间结构及其变动特征进行分析结果表明：成渝城市群城市体系呈现明显的双核首位特征，规模分布随时间逐渐由非均衡向均衡状态演变；考察期间，重庆市域城市重心向东北方向移动、四川省域城市重心向西北方向偏移，整个成渝城市体系的重心向北偏移；城市增长在长轴方向上有所收敛，而在短轴方向上有所发散，即城市体系沿西北——东南方向的增长更为显著；整个城市体系空间展布的范围有所增加，城市分布密集程度呈现下降趋势戍渝城市群空间形态演进经历了从都市区列都市囤再到城市群的阶段性变化特征在优化城市群要素结构的基础上，要强化城市群内部互联互通以及与外部空间的相互联系，并加强川渝合作．促进空间管理制度的改革与创新。

英文摘要：

Based on the data about urban nighttime lights between 1992 and 2012, the spatial structure of the Chengdu-Chongqing urban agglomeration and its change characteristics are systematically analyzed by applying such methods as the urban rank-size rule, the weighted standard deviation ellipse and the exploratory spatial data analysis. The research results show that： the urban system of the Chengdu-Chongqing urban agglomeration clearly features the dominance of double cores, and the scale distribution of the urban system has been gradually evolving toward the direction of equilibrium; during the investigation, the center of the Chongqing municipal region moved toward northeast, and the center of the Sichuan provincial region moved toward northwest, making the center of the whole Chengdu-Chongqing urban system move north; the urban growth of the Chengdu-Chongqing urban agglomeration converged in the major axis direction and slightly diverged in the minor axis direction; the spatial distribution scope of the whole urban system was expanded within the investigation period, with the urban distribution intensity continuously declining. The spatial form of the Chengdu-Chongqing urban agglomeration has undergone three evolution phases, namely, the phase of metropolitan area, the phase of metropolitan coordinating region and the phase of urban agglomeration. On the basis of optimizing the elemental structure of urban agglomeration, the interconnections and intercommunications within the urban agglomeration as well as its connections with outer space should be strengthened, Sichuan-Chongqing cooperation should be strengthened, and the retbrm and innovation of the space management system should be advanced.