Abstract:Estuary of Shuangyang River,Jiangsu Province,was selected for this study.The seashore bank in this area was often eroded by typhoons and storms.Three approaches involving plan Arepairing without plantation,plan BPlantation of S. alterniflora without uses,plan C S . alterniflora Ecological Engineering(SAEE)were practiced.This article describes the EMERGY analysis of these plans. The EMERGY analysis of three approaches results as following: EMERGY inflows,A:2 84E+12 sej/a·m 2;B:3 67E+11sej/a·m ...