Normal level index for assessment on comprehensive benefit of Grassland Construction Engineering Project

According to the characteristics of grassland construction engineering projects, a theoretical frame for assessment on comprehensive benefit of grassland construction engineering project was put forward, which composed of five benefits, including ecological, economic, environmental, social and landscape benefits. The five benefits were regarded as normal level indexes for assessment on comprehensive benefit of grassland construction engineering projects. The concrete details, assessment contents and the relationship among the five benefits were studied in this study.