Barely Significant

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In 2020, the regression coefficients tended to stabilize and exhibited a spatial differentiation characteristic of “higher in the west and lower in the east.” Through vertical comparison of the spatial regression analysis results for 2010, 2015, and 2020, it can be observed that the spatial correlation between the distribution of sports venues and the industrial intensity in Xi’an exhibits distinct phased characteristics: a decreasing trend from west to east was demonstrated in both 2010 and 2020, while a “center-periphery” spatial structure was presented in 2015.
This conclusion is the same as that of Guo Yong mei 22 , Huang Chunhui 23 and Ruan Meiying 24 in the study of chilli, kiwifruit and tomato; the changes in the content of anthocyanin in the fruits of Drosera showed a trend of gradual increase, while the synthesis of flavonoids and total phenolics showed a trend of increasing, then decreasing, and then increasing again.