[Ditches protection in lake network based on landscape ecology]

As a typical corridor landscape in lake network, ditch is an important component of lake ecosystem. In recent years, the ecosystem quality of Hanyang lake network in Wuhan City becomes worse and worse, mainly caused by the degradation of ditch corridor's function. In order to restore its function, this paper made an optimized design of the ditches' landscape pattern on the basis of landscape ecology theories such as corridor scale effect, heterogeneity, edge effect and ecological rehabilitation, and the analyses of ditches status. The contents were to control the water quality in the whole area in a larger scale, to dredge and rebuild the ditches to strengthen the corridor function, and to project the banks of ditches to enhance the anti-disturbance ability. The study indicated that the theories of landscape ecology should be used reasonably in the ditches protection in lake networks.