AUTHOR=Lu Yuchen , Zhuang Jiakun , Yang Chenlu , Li Lu , Kong Mei TITLE=How the digital economy promotes urban–rural integration through optimizing factor allocation: theoretical mechanisms and evidence from China JOURNAL=Frontiers in Sustainable Food Systems VOLUME=9 YEAR=2025 URL=https://www.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2025.1494247 DOI=10.3389/fsufs.2025.1494247 ISSN=2571-581X