Land finance plays a pivotal role and occupies an irreplaceable position in facilitating the rapid regional integration of China. This study introduced an explanatory framework that integrates both time-nonlinear and spatial factors to comprehensively investigate the impact of land finance dependency on regional integration. Furthermore, this paper employed the data between 2003 and 2017 from 108 cities within the Yangtze River Economic Belt, and utilized a spatial Durbin model to assess these effects. In terms of temporal dimension, this research uncovered an inverted U-shaped relationship between land finance dependency and regional integration. In 2017, 51 out of the 108 cities analyzed had not yet reached the optimal threshold of land finance dependency for peak regional integration. Additionally, inverted U-shaped patterns in the effects of two modes of land finance dependency on regional integration can be observed. The land transfer-centered mode demonstrated a significant impact, whereas the land investment-centered mode did not. Moreover, regional heterogeneity was evident in our analysis. The spatial effects of land finance dependency on regional integration were most pronounced in the lower reaches area, while they remained insignificant in the middle reaches area. In contrast, the influence of land finance dependency on regional integration remained positive but exhibited a marginal decline in the upper reaches area. This study delves deeply into land finance dependency from the perspective of regional integration, offering valuable insights for urban governance in the future.

中文翻译：

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揭示土地财政依赖对城市间区域一体化的影响：整合时间非线性和空间因素的解释框架


土地财政在推动我国区域快速一体化进程中发挥着举足轻重的作用，具有不可替代的地位。本研究引入了整合时间非线性和空间因素的解释框架，以全面研究土地财政依赖对区域一体化的影响。此外，本文利用长江经济带内108个城市2003年至2017年的数据，并利用空间杜宾模型来评估这些影响。从时间维度来看，本研究揭示了土地财政依赖与区域一体化之间的倒U型关系。 2017年，在分析的108个城市中，有51个城市尚未达到区域一体化峰值的土地财政依赖度最佳阈值。此外，可以观察到两种土地财政依赖模式对区域一体化影响的倒U型模式。以土地流转为中心的模式表现出显着的影响，而以土地投资为中心的模式则没有表现出显着的影响。此外，在我们的分析中，区域异质性很明显。土地财政依赖对区域一体化的空间效应在下游地区最为明显，而在中游地区则不显着。相比之下，土地财政依赖度对区域一体化的影响依然为正，但在上游地区呈现小幅下降的趋势。本研究从区域一体化的角度深入探讨土地财政依赖，为未来城市治理提供有价值的见解。