Expert Knowledge Based Valuation Method of Ecosystem Services in China

Valuation of global ecosystem services by R Costanza(1997)has attracted attention of the Chinese ecological researchers over the years.And many Chinese scientists have been using the methods to valuate the ecosystem services for forest,grassland and farmland ecosystems.However,it has been turned out that there are several shortcomings in direct adaptation of the methods,for instance,some ecosystem services have been insufficiently valuated or even ignored via using Costanza's method.To fill this gap,we have,on the basis of Costanza's method,developed a new method or 'unit value' based method for assessment of ecosystem services.Expert interviews with structured questionnaire were contacted in 2002 and 2007…