Spatio-temporal coupling and influencing factors of urban green innovation efficiency and ecological resilience in the Yellow River Basin

Exploring the coupled and coordinated relationship between urban green innovation efficiency and ecological resilience is of great practical significance for promoting ecological protection and high-quality development in the Yellow River Basin. The Super-SBM model and entropy weight method are used to measure the green innovation efficiency and ecological resilience level of 78 cities in the Yellow River Basin from 2010 to 2020, respectively, and to further analyze the spatial and temporal evolution characteristics of the coupled and coordinated development and the factors influencing them by using the modified coupled coordination degree model and the Tobit regression model. The results show that: ①Both green innovation efficiency and ecological resilience of cities in the Yellow River Basin in 2010—2020 show a fluctuating upward trend over time evolution, but the development level is low; both show obvious spatial variability among regions. ②The coupling degree and coordination degree of green innovation efficiency and ecological resilience in the Yellow River Basin during the study period showed a growing trend, in which the coupling degree as a whole was in the stage of friction, and the coordination degree as a whole was in the state of general coordination; from the perspective of spatial pattern, it presents the characteristics of "upstream-midstream-downstream" step increase. ③The level of economic development, transportation infrastructure, degree of openness to the outside world, and human capital have a significant positive contribution to the degree of coupling coordination, while the industrial structure and urbanization level have a significant inhibiting effect on the degree of coupling coordination.