Up to now

soil and water conservation has already achieved significant benefits in China. However

the benefit assessment for soil and water conservation is far behind and remains in the stage of qualitative description and theoretical exploration. Some deep-seated issues have not been involved yet

such as the relationship between the control models of soil and water loss and their benefits

the regulations and indexes of benefit assessment

the relationships among measures

benefits and control aims

and the connection between point and area benefits of conservation. Researches and investigations on those issues will greatly push forward the construction of the theory system of benefit assessment and thus

prompt the applicability and scientific meaning of benefit assessment for soil and water conservation.