By adopting an analogical ecosystem perspective and by pursuing coexistence and coprosperity of the overall spatial development of urban agglomerations can avoid disorder and vicious competition that occur among cities. However, this perspective has not been applied to the research on the Yangtze River urban agglomeration. Thus, this paper attempts to construct a more comprehensive and scientific index system for the competitiveness of Yangtze River urban agglomeration from the perspective of an ecosystem-based socio-economic system structure and analyzes the current economic development situation of the eight cities along the Yangtze River. Based on this objective, principal component analysis (PCA) method is used to comprehensively evaluate the economic development level of the eight cities. Simultaneously, the concept of the urban niche is used to derive the niche levels and dominant ecological functions of each city and to promote the optimization of the spatial structure of the Yangtze River urban agglomeration. Accordingly, this paper also explores the spatial optimization path of the Yangtze River urban agglomeration under the guidance of the analogical ecosystem concept, to provide theoretical reference for the optimization of spatial structure and strategic planning of Yangtze River urban agglomeration.

采用类比生态系统视角，追求城市群整体空间发展的共生共荣，可以避免城市间的无序和恶性竞争。然而，这一视角并未应用于长江城市群的研究。因此，本文试图从基于生态系统的社会经济系统结构的角度构建更全面、更科学的长江城市群竞争力指标体系，并分析长江沿线八市的经济发展现状。 . 基于此目标，采用主成分分析（PCA）方法对8个城市的经济发展水平进行综合评价。同时地，利用城市生态位概念推导各城市生态位层次和主导生态功能，促进长江城市群空间结构优化。据此，本文也探索了类比生态系统概念指导下的长江城市群空间优化路径，为长江城市群空间结构优化和战略规划提供理论参考。