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    Exploring variations of ecosystem service value in Hangzhou Bay Wetland, Eastern China2019

    GAO J., GUO P., LI L., LIN W., WANG D., XU D.Journaux et Revues (scientifiques)

    aide à la décision, biens et services écosystémiques, conservation, coûts / mesures de prévention / protection

    Ecosystem Services
    Volume 37, June 2019, 100944

    • The ESV (ecosystem service value) of 1990, 2000 and 2010 at the Hangzhou Bay Wetland were aggregated from 8 ecological functions with remote sensing and GIS.

    • The temporal-spatial change of wetland ESV was analyzed for three decades.

    • This paper used coefficient of sensitivity to determine the dependence of ESV on the change of ecosystem value coefficient over time.

    • The total ESV first increased and then decreased, indicating that the ecosystem environment situation remains severe in Hangzhou Bay.

    Wetlands are important natural resources, and studying wetland ecosystem values is helpful to explore the sustainable development of resources and economy. Hangzhou Bay is located in economically developed coastal area of China, where wetland values have been changed rapidly in the past few decades. Based on three sets of remote sensing data (1990, 2000 and 2010), this study has made an exploration on spatio-temporal changes of wetland area, and also made an assessment on wetland ecosystem values of eight types of service in Hangzhou Bay based on related theories of ecological economics. Results showed that the ecosystem service value of Hangzhou Bay Wetland in 1990, 2000 and 2010 were 48.7 × 108 yuan, 41.6 × 108 yuan and 45.3 × 108 yuan, respectively. If divided by wetland types, rivers and lakes were two types of wetlands that have the greatest proportion of service value, followed by paddy field and shallow waters. In the perspective of service types, water conservation and material production accounted for over 70% of the total service value. In addition, the recreation value has been increased significantly in recent years. This study, therefore, recommends developing coastal wetland tourism and coastal aquaculture based on controlling pollution emissions to protect natural wetlands.

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