Fig 1.
Research framework.
Table 1.
Descriptive statistics.
Table 2.
T-mean difference test of sample groups.
Table 3.
Regression analysis of the main model.
Table 4.
The Sobel test result.
Table 5.
Regression results of robustness tests based on another measurement.
Table 6.
Results based on two-stage and GMM instrumental variable method.
Table 7.
The moderating role of R&D expenditure and environment protection investment.
Table 8.
Heterogeneity test of political connection and environmental information disclosure.
Table 9.
Heterogeneity test of regional differences.