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Based on the monthly data of \u201cThe Tencent Internet Plus\u201d digital economy index for 31 provinces in China from 2018 to 2020, the non-linear Granger causality test and social network analysis were applied to reveal the spatial correlation effects of China\u2019s digital economy. The quadratic assignment procedure (QAP) was used to empirically examine the factors influencing the formation of non-linear spatial association networks. The results show that the spatially linked relationships of the digital economy in 31 Chinese provinces exhibit a significant non-linear spatially correlated network structure. Block model analysis reveals that the development of the digital economy between the four major sectors is closely linked, and the national linkage effect is significant. The results of the secondary assignment procedure indicate that capital stock, information infrastructure, and geographical proximity have a significant positive impact on the formation of spatial linkages in the digital economy. In contrast, technological innovation has a significant negative impact.<\/jats:p>","DOI":"10.3390\/systems11020063","type":"journal-article","created":{"date-parts":[[2023,1,25]],"date-time":"2023-01-25T04:22:16Z","timestamp":1674620536000},"page":"63","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["A Study on the Spatial Correlation Effects of Digital Economy Development in China from a Non-Linear Perspective"],"prefix":"10.3390","volume":"11","author":[{"given":"Jie","family":"Huang","sequence":"first","affiliation":[{"name":"School of Business, Research Institute of the Economic and Social Development in the Dabie Mountains, Xinyang Normal University, Xinyang 464031, China"}]},{"given":"Huali","family":"Jin","sequence":"additional","affiliation":[{"name":"School of Economics, Shandong University of Finance and Economics, Jinan 250014, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5682-9019","authenticated-orcid":false,"given":"Xuhui","family":"Ding","sequence":"additional","affiliation":[{"name":"School of Finance and Economics, Jiangsu University, Zhenjiang 212013, China"}]},{"given":"Aihua","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Resource and Environmental Science, Shijiazhuang University, Shijiazhuang 050037, China"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Ding, C.H., Liu, C., Zheng, C.Y., and Li, F. 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