Research on Spatial Differentiation and Influence Mechanisms of Coupled and Coordinated Development Between New Quality Productivity and Common Prosperity: A Perspective Based on the Dagum Gini Coefficient

Common prosperity is an essential requirement of socialism with Chinese characteristics and the fundamental objective of high-quality development. New-type productive forces represent a novel form of productive force development in the new era. Logically mapping their synergistic development with common prosperity, deconstructing their mechanisms, and exploring pathways will help us pioneer new prospects for China's high-quality development. This holds significant guiding significance for solidly advancing common prosperity in the new development stage. This paper utilizes panel data from 30 provinces spanning 2012–2022. It employs the coupling coordination degree model and the Dagum Gini coefficient to measure the development level of new-type productive forces, the level of common prosperity, and their coupling coordination degree. It comprehensively analyzes the spatiotemporal evolution and distribution characteristics of the coupling coordination degree between new-type productive forces and common prosperity using the Dagum Gini coefficient and kernel three-dimensional density estimation. The findings reveal that while the coupling coordination between new-type productive forces and common prosperity has gradually improved, the overall coordination level remains relatively low. Regional disparities are diminishing overall but persist at a significant level, primarily driven by inter-regional differences. Based on these findings, policy recommendations are proposed from three perspectives: strengthening regional cooperation and collaborative innovation, implementing differentiated policy support, and continuously enhancing the level of coupling coordination.