Part III The Cycle-transformation Theory of Ecological Economy System Chapter 2 The cycle between natural matter-flow and economic matter-flow 1.The transformation from natural matter-flow to economic matter-flow The natural course of transformation from natural matter-flow to economic matter-flow The transformation natural matter-flow to economic matter-flow through human's laborPart III The Cycle-transformation Theory of Ecological Economy System Chapter 2 The cycle between natural matter-flow and economic matter-flow 1. The transformation from natural matter-flow to economic matter-flow ⚫ The natural course of transformation from natural matter-flow to economic matter-flow ⚫ The transformation natural matter-flow to economic matter-flow through human’s labor