Abstract: Reed (Phragmites australis), well grown in aquatic environments of river, lake and tidal wetlands, can be considered as high biomass and bioenergy crop for C-sequestartion ecosystems. This paper describes the role of the reed wetlands in developing terretrial ecosystems with high C-sink and potential for CO2 mitigation, discusses the problems of bioenergy production using reed in tidal wetlands and the contribution to the state capacity of terrestrial ecosystem C sink. It is recommended that extension of reed wetlands should be taken into account in the national strategy of ecosystem carbon sequestration and bio-energy development.