To reveal the spatiotemporal evolution patterns of the coupling and coordination between nursing human resources and medical and healthcare service capacity in the Chuan-Yu region,and to analyze the spatial heterogeneity of influencing factors,in order to provide scientific basis for the optimal allocation of regional public health resources.

Based on the coupling coordination degree model,the coupling coordination degree between nursing human resources and healthcare service capacity in the Chuan-Yu region from 2011 to 2021 was analyzed.The time series dynamic characteristics of the coupling coordination degree were depicted using the kernel density estimation method.Spatial agglomeration patterns were identified through global and local spatial autocorrelation analysis.Geographically and temporally weighted regression(GTWR) model was constructed to quantify the strength and spatial differentiation of the effects of multiple influencing factors.

From the perspective of temporal evolution,the coupling coordination degree of nursing human resources and healthcare service capacity in the Chuan-Yu region increased from 0.239 in 2011 to 0.273 in 2021.The kernel density curve presented a multimodal structure with increased peak values.The width gradually expanded,and the left trailing extension was widened.From the perspective of spatial pattern,the global Moran's index increased from -0.282 in 2011 to 0.299 in 2021.In 2021,the local spatial autocorrelation analysis clustering was dominated by "high-high" and "low-low",forming "core-periphery" polarization structure.From the perspective of influencing factors,the factors that have a positive influence on the coupling coordination degree were the end-of-year permanent resident population,urbanization rate,average salary,and the number of insured people for urban basic medical insurance.The factors that have a negative impact were the total length of highways and per capita regional GDP.

The coupling coordination degree of the two systems in the Chuan-Yu region has been continuously improving.The clustering trend of the coupling coordination degree is obvious,and regional differentiation has intensified.The coordination relationship showed positive spatial correlation,and the degree of being driven by real factors varies.Relevant departments should promote the balanced development of nursing human resources and improve the investment mechanism for medical and health services.