◆x久、 Part III The Common Theory ofEcologicafEconomy System The characteristics of E.E.S and its succession characteristics of E.E.S Thie fusion of concept system and substance system 2Theforderliness of E.E.S 3Chexdouble coupling between ecological system and economie system structure of E.E.SChapter 2 The characteristics of E.E.S and its succession Part III The Common Theory of Ecological Economy System 1. The characteristics of E.E.S 1.1 The fusion of concept system and substance system 1.2 The orderliness of E.E.S 1.3 The double coupling between ecological system and economic system 2. The structure of E.E.S