Has green finance policy promoted ecologically sustainable development under the constraints of government environmental attention?

This study aimed to reveal how China's green finance reform and innovation demonstration zone policy affects ecologically sustainable development under the constraints of government environmental attention. Employing multi-period DID (Difference-in-Difference) and DDD (Difference-in-Difference-in-Difference) as the base model, the study tested the mechanism of the policy's effect on ecologically sustainable development, using panel data from 277 prefecture-level cities in China from 2006 to 2020. Endogeneity tests including Two-Stage Least Squares (2SLS), counterfactual tests, and other robustness checks, were employed to enhance the study's validity. The research findings are as follows: (1) The policy effectively promotes ecologically sustainable development, and this conclusion remained valid even after conducting several robustness tests. (2) The more pronounced the government's emphasis on environmental preservation, the greater its efficacy in fostering ecologically sustainable development. (3) The stimulating effect of the policy on ecologically sustainable development is more pronounced in cities with higher ecological quality and a larger population. This study not only offers new analytical perspectives for comprehensively investigating the green finance policy but also emphasizes that enhanced policy outcomes hinge on the implementation of green financial reforms and innovations tailored to local conditions. Additionally, it provides valuable policy insights for optimizing the government's role in fostering ecologically sustainable development. (e.g., optimizing the governmental role in fostering ecologically sustainable development, enhancing both the scope and intensity of green finance policy, and harnessing the synergies between green finance policy and environmental protection policy).