Resource　and　environmental　elements　as　controlling　factors　for　ecologic　and　socio-economic　are　crucial　to　seek　new　ideas　and　paths　for　development　and　prosperity.　In　this　study,　environmentally-extended　input-output　analysis　and　ecological　network　analysis　were　combined　to　develop　three　ecological　networks　including　energy　ecological　network,　water　ecological　network,　and　carbon　ecological　network　for　searching　the　complex　relationships　among　different　departments　for　water　utilization,　energy　consumption,　and　carbon　emissions　under　considering　China　as　a　superorganism　with　various　complex　metabolic　processes　and　the　most　fundamental　metabolic　materials.　The　embodied　ecological　elements　intensity,　the　indirect　consumption　and　emissions,　the　embodied　material　flows,　the　ecological　relationships,　and　the　dependence　intensities　among　sectors　was　obtained　through　transforming　the　monetary　input-output　data　to　physical　data　from　2007,　2012,　and　2017.　The　results　show　that　the　Energy　Ecological　Network　and　Water　Ecological　Network　were　in　a　relatively　stable　state　with　a　mutualism　index　greater　than　1,　and　the　relationship　among　different　sectors　in　the　CO2　Ecological　Network　needs　to　be　further　adjusted.　AM　(Advanced　Manufacture)　and　Agr　(Agriculture)　played　the　top　exporter　and　importer　roles　with　AM　as　the　largest　embodied　energy　consumer　and　CO2　emitter,　and　Agr　as　the　largest　embodied　water　user.　More　measures　about　resource　conservation　and　emission　reduction　for　AM　and　Agr　are　desired.　Con　(construction)　had　a　strong　dependence　intensity　on　other　sectors　with　amounts　of　over　90%.　Resources　and　environmental　effects　on　Con　can　be　improved　by　increasing　the　utilization　efficiency　of　intermediate　products.　The　results　could　provide　scientific　policy　implications　and　guidelines　to　promote　the　stable　and　healthy　operations　by　revealing　the　dynamic　change　of　sectors　within　the　Energy-Water-CO2　metabolic　system　in　China.　(C)　2020　Elsevier　B.V.　All　rights　reserved.