A stepwise strategy for ecological restoration of estuary areas was proposed in this pa-per,by which land-originated pollutants from river into the sea could be significantly elimina-ted.The concept of“stepwise ecological restoration”of estuary areas was analyzed and demon-strated theoretically.This strategy proposed an integrated stepwise tech-system for ecological restoration of estuary areas,including longitudinal(upstream-midstream-downstream)restora-tion technology,transversal(uppertidal-intertidal-subtidal zone)rest-oration technology,inte-grated systems of both longitudinal and transversal restorations,and integrated technology of both elimination of pollutants at the origins and successively restoration at estuary mouth.This paper provided a new insight and theoretical model of stepwise ecological restoration tech-sys-tems of estuary areas by eliminating land-originated pollutants into the sea.
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