Urban spatial performance evaluation can reveal the efficiency and balance of urban development,provide early warning for urban spatial development,and improve the government's ability to formulate urban development strategies.On the basis of elucidating the connotation of urban spatial performance,the paper constructs a spatial performance evaluation system from the perspective of"economy-society-environment",and uses the entropy method-analytic hierarchy process composite model and coupling coordination degree model to systematically study the spatial performance and system coordination evolution characteristics of 26 central cities in the Yangtze River Delta region.The results show that:(1)The comprehensive performance of urban space is in the stage of accelerating improvement.The internal structure of the three subsystems has obviously evolved,and the comprehensive performance is changing from efficiency priority to social service balance priority.(2)The overall degree of coordination of the economic performance,social performance and environmental performance of urban space is still low,but the level of coupling and coordination of the two shows that the three subsystems are in the positive coordination and optimization stage,and the evolution speed of the coordination of economic performance and social performance is high.(3)The coordination of urban spatial performance system basically follows the evolutionary path from low coordination to medium coordination,and all kinds of problem cities have the trend of spatial agglomeration.
Yangtze River Delta regionurban spatial performanceperformance evaluationsystem coordination