| Since Professor Costanza estimated the value of global ecosystem services in 1997,a large number of studies have been conducted in different regions by different methods.Through the valuation of natural resources,researchers can reveal the extent to which human social development disrupts ecosystems from the monetary point of view,so that policy making can protect and sustain natural resources in the formulation and implementation of relevant policies,especially on economic development use into policy formulation.With the passage of time,foreign countries have strong demand for the assessment of natural resource value,a more convenient method of value assessment,which takes into account the time,cost and other restrictions,emerges as the times require-Benefit Transfer Method.Benefit Transfer Method is a way of evaluating a new research area(Policy Site)using existing research findings(Study Site),requiring research and policy to be conducted in a socio-economic,resource environment and other aspects of a certain degree of similarity,this method is widely used in the evaluation of foreign natural resource value.Long-standing mining activities in resource-based cities have drastically disrupted regional land use and have a serious impact on ecosystem health.In view of the fact that the application of the transfer of benefits law in China has not been popularized at present,this paper,on the basis of the attempt,synthesizes the research examples of ecosystem service value in several resource-based cities in China,extracts the series of index parameters,using Meta-analysis to establish benefit transfer models for assessing ESVs of cultivated land,forest land,grassland,waters especially in mining cities,and analyze the relationship between different factors and ecosystem service value,then examining the feasibility of these models for evaluating the ESVs of Wu’an city in 1987,2001 and 2014,.The results tell us that(1)the benefit transfer method can effectively assess the ESVs in mining cities;(2)there is a declining trend after the increase in the total ESVs of Wu’an,and a significant decrease after 2001;(3)from the aspect of area,we can see that the degree of interference is cultivated land>grassland>waters>forest land from 1987 to 2014,from the aspect of the ESVs,we can see that the degree of interference is cultivated land>waters>grassland>forest land;(4)when the total area of ecological land reduces,a reasonable configuration can keep a growth total ESVs rather than decline. |
