Study on the economical loss of ecological damage by the construction of express ways

Based on the value of ecosystem services,the influence on and damage to the ecosystem by express ways construction are discussed and the indexes selection,calculation method and application conditions of economicalloss of ecological damage by the construction of express ways are studied in combination with the projects of constructed and constructing express ways in Chongqing City.Finally,the countermeasures of eco -environmental protection in the construction of express ways are put forward.