The Coupling Coordination and Convergence of New Urbanization and Tourism Economic Development in the Nine Provinces along the Yellow River

The Yellow River Basin acts as both a national ecological barrier and a core area for high-quality development strategies. It encompasses nine provincial-level administrative regions and serves as an exemplary case for studying the cross-scale co-evolution of human-land systems. This study centers on the dual driving forces of new urbanization and tourism economy, aiming to address the critical question of “how can these two systems achieve mutual promotion and coordination?”, which has significant practical implications for optimizing the human-land relationship in the basin. Drawing on panel data from 2011 to 2022, this study applied a coupling coordination model and spatial convergence econometric methods to uncover the spatio-temporal patterns of coupling coordination between the two systems across the nine provinces and autonomous regions along the Yellow River. The key findings are threefold. (1) New urbanization demonstrated a steady yet gradual upward trend, whereas the tourism economy exhibited a “growth-decline” fluctuation pattern, revealing a notable temporal mismatch between the two systems. (2) Although the coupling coordination degree of the two systems is progressing toward an orderly structure, the overall level remains relatively low, with the new urbanization system being the primary constraint on overall coupling coordination due to significant impediments in the economic, spatial, social, and ecological dimensions of urbanization. (3) Significant convergence in the coupling coordination degree of the two systems was observed at the basin-wide level and in the upper reaches, although the influencing factors differ. In contrast, no convergence trend was evident in the middle and lower reaches, reflecting the path-dependent characteristics of the basin's gradient development pattern. This study elucidates the coupling and coordination relationship between the two systems, thereby providing a robust scientific foundation for the high-quality development of the Yellow River Basin.