A Study on the Spatio-Temporal Evolution and Determinants of Green Development Efficiency in the Cultural Industry of the Yangtze River Economic Belt

This study builds a super‑efficiency SBM framework that takes unintended outputs into consideration. Using the Dagum Gini index, Moran’s I statistic, and a principal component regression model, we evaluate the green development efficiency of the cultural sector across 11 provincial‑level units within the Yangtze River Economic Belt for the year 2023. The analysis uncovers both the spatial‑temporal dynamics and the driving forces behind efficiency. Our key findings are as follows. The overall gre