Land　is　the　foundation　of　human　survival　and　well-being.　It　is　important　to　investigate　the　land　uses　of　economic　sectors　and　recognize　critical　supply　chain　activities　influencing　land　uses.　However,　the　full-sector　land　uses　and　relevant　multiregional　supply　chain　activities　have　not　been　well　characterized.　This　study　constructs　a　new　accounting　framework　based　on　road　network,　point　of　interest　data,　and　remote　sensing　data　to　estimate　sector-specific　land　uses.　The　accounting　framework　is　applied　to　Beijing,　China.　The　multiregional　supply　chain　activities　influencing　full-sector　land　uses　in　Beijing　are　revealed　based　on　environmentally　extended　multiregional　input-output　model.　Results　show　that　the　largest　nonagricultural　land　users　are　the　wholesale　and　retail　trades　sector　and　the　accommodation　and　catering　sector.　Land　uses　of　these　sectors　are　substantially　driven　by　the　final　demand　for　the　construction　sector　and　enabled　by　the　primary　inputs　of　the　finance　sector.　Moreover,　the　final　demands　of　Henan　and　Zhejiang　as　well　as　the　primary　inputs　of　Jiangsu　and　Hebei　are　critical　impetus.　Optimizing　consumption　behavior　of　final　consumers　and　product　allocation　of　primary　suppliers　can　help　improve　land　management.　This　accounting　framework　can　be　further　applied　flexibly　to　studies　on　larger　spatial　scales　and　time-series　studies.