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Authors
XUE, Weixian
JIN, Yanzhi
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Funding
Funding for this research was provided by:
the project of National Natural Science Foundation of China (72273103)
the key project of Shaanxi Provincial Natural Science Foundation (2022JZ-41)
the Shaanxi Provincial Social Science Foundation of China (2025D028)
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Article History
Received: 10 June 2025
Accepted: 30 April 2026
First Online: 11 May 2026
Competing interests
: The authors declare no competing interests.
: This study does not involve human participants or animals. All data used in this research are secondary data obtained from publicly available statistical yearbooks and official databases. Therefore, ethical approval was not required.
: This study does not involve human participants, and no personal identifiable information is included. Therefore, informed consent is not applicable.
: This study does not involve human participants or animals. All data used in this research are secondary data obtained from publicly available statistical yearbooks and official databases. Therefore, ethical approval was not required. This article does not contain any studies with human participants performed by any of the authors.
