Abstract: Natural capital,labor capital,and manufactured capital are the three capitals supporting human being’s existence and development.Compared with the latter two capitals,natural capital and its offered ecosystem services didn’t have any perfect economical valuation system.In recent years,ecosystem services valuation has made significant progress under the common concern of economists and ecologists.In this paper,the theoretical basis on ecosystem services valuation was discussed from the aspects of energetics and economy,and some improved methods and means for ecosystem services valuation were summarized,including the adjustment of unit value by biomass,identification of different spatial scales,improvement of contingent valuation method,and application of dynamic simulation models.There still exist some problems needed to be solved and improved in the future.

Key words: Bogda Mountain, Bryophyte, Species diversity, Similarity coefficient