Abstract:Quantitatively setting ecological compensation standardization was a focus and also a difficulty for the establishment of ecological compensation mechanism. As a case study, the economic compensation calculation of the first stage ecological construction project in the water resource protection zone for Eastern South-to-North Water Transfer Project was discussed basis on restoration cost and ecosystem service value assessment. The ecological restoration cost of the first stage for the water resource protection zone was calculated as 146 million yuan per year, and the ecological befits calculated for the restoration area and the exterior area were 83 million yuan and 213 million yuan per year respectively based on valuation of ecosystem service added. According to the basic principle of ecological compensation, the exterior ecological benefited region should compensate the cost of the restoration project, it was proposed the compensation proportion of the exterior area to the construction cost can be calculated based on the ecological benefit proportion it gained from the restoration project, and the compensation amount of the exterior area was calculated as 111 million yuan per year.