Advances on the Effects of Ditch Wetland on Hydrology and Eco-environment

Ditch system is important to reduce pollution and prevent eutrophication in rivers and lakes.Firstly,this paper gives the definition of ditch and ditch wetland;secondly,we review the research advances in the effects of ditch wetland on hydrology and eco-environment at home and abroad,and explain explicitly the mechanism that ditch wetlands intercept nutrient(nitrogen and phosphorus,etc.) and contamination(pesticide and herbicide,etc.);additionally,it introduces the advances in ditch modeling and ditch management study;finally,in order to be helpful to ditch studies,we point out the present insufficient research and put forward some suggestions that include strengthening research on field monitoring,modeling ditch and managing ditch.