Abstract:On the basis of theories and computation methods for ecological water requirement, the definition of the ecological water requirement for wetlands, the water needed by the wetland to maintain the ecosystem‘s diversity and the ecological characters, is proposed in this paper. It includes the water required by the wetland soil, the vegetation evapotranspiration, the fish breeding, the habitat, and the sediment transportation. Due to the unique geographical location and climatic characters, there are various n...