“…Fiscal expenditure, as an important component of environmental finance, is closely related to environmental pollution (Shao et al, 2022;Zahra et al, 2022), and the level of fiscal expenditure largely influences the differentiation of provincial economic quality development (Wang et al, 2022), and increased government public expenditure tends to significantly improve the level of local ecological and environmental quality (Lin and Zhou, 2021a;Zhu et al, 2022), and some scholars even directly argue that the proportion of government expenditure to GDP is positively related to the level of air pollution (Carlsson and Gable, 2000;López et al, 2011). On the other hand, fiscal expenditure, as a mechanism factor, has a positive impact on the stability of industrial ecosystems (Guild, 2020;Schmidt et al, 2014;Zhu et al, 2022), and existing studies found that there is a significant spatial auto correlation between local fiscal expenditure and the level of industrial ecology, and the government can promote the stable development of local industrial ecosystems by guiding social funds through public expenditure (Guild, 2020;Schmidt et al, 2014), which is conducive to promoting the improvement of the local environment. And the implementation of the policy of poverty alleviation will make the local government pay more attention to the assessment from the higher level, thus changing the investment in environmental management and increasing public expenditure according to the importance of the assessment index from the higher level (Westmore, 2018;Zeng et al, 2021), so this will help the local improvement of the environmental quality condition.…”