Non-point source pollution is becoming more and more serious in China with population growth and socioeconomic development.Thus

sloping lands are paid a great attention in order to gain much more products.While forest coverage decreases there

when heavy raining happens

soil erosion gets worsening.In this case

much more nutrients enter rivers and lakes which result in eutrophication.For controlling non-point source pollution from the sources

sloping land management in the headwater regions is necessary.It has been approved that contour hedgerow system is the most favorable art for soil and water conservation

which is considered as a vital measure to control agricultural non-point source pollution in practice.By implementing hedgerow intercropping

it can fix nitrogen through plants so as to reduce chemical fertilizers input

prevent soil erosion

uptake soil nutrients

and hold up pollutants.Through hedgerows

N and P are reduced by 89% and 80% respectively

which provides habitats for wildlife.Moreover

the planting techniques of hedgerows in sloping lands are also discussed such as design of the system

methods of site preparation

and type of planting

as well as tending and maintaining measures.