Abstract: The concept of ‘Ecological Yangtze River Estuary’ (EcoYRE) was raised but not strictly defined by the authors in 2004. It is a new idea in accor
dance with the strategies of ocean development, marine industry development, and ecological civilization proposed by Chinese government, and of strong vitality.
 In this paper, the concept of EcoYRE was defined and explained from the aspects of non-indigenous ecology, ecological construction, marine security, ecological economy, ecosystem management, and eco-city. Furthermore, the construction goal, guidelines, and implementation strategies of EcoYRE were presented, and the constructional framework, including the constructions of natural reserves system, security guarantee system, and coastal economic special zone in the Yangtze River Estuary, was discussed.

Key words: Plant-culture system, Mangrove, Bacteria ecology