Présentations Colloques

    Oral Presentation
    Session 4.01: Innovative economic instruments and institutions for achieving sustained groundwater use. Integrated socio-economic and biophysical modeling for groundwater and conjunctive use management
    Vermooten Sophie
    Sustainable use of the subsurface and groundwater- Identifying opportunities and bottlenecks using the ecosystem services concept
    In densely populated areas like the Netherlands, the use of groundwater and the subsurface for functions such as groundwater extraction, aquifer thermal energy storage and infrastructure is increasing. National and regional governments need tools to take informed decisions on the sustainable use of the subsurface and groundwater. For this purpose a technical assessment method was developed based on the concept of ecosystem services (ESS) and its relations with economic activities. The method discloses in a systematic way how activities in the subsurface and aboveground depend on ESS and what the activity’s impact is on the ESS, whether it is a positive or a negative impact. It finally shows what activities can be combined or have an adverse impact on each other. **Eleven relevant ESS of the Subsurface and Groundwater and 30 activities are described in the method. The ESS are clustered according to The Common International Classification of Ecosystem Services (CICES) into provisioning services, regulating services and cultural services. The activities are related to abstraction of groundwater, storage of water and other substances, reservations, extraction of resources (other than water), groundwater level management, aboveground activities and subsurface spatial occupation (spatial claim). Two sets of factsheets summarize key knowledge about these activities and ESS, and their interrelations. The factsheets give preliminary guidance for local and regional authorities for decision making. The method was tested on a case in the municipality of Utrecht and a case in the Province of Noord-Brabant (the Netherlands) involving all stakeholders from the private and public sector. For both cases, the method is used to create a common knowledge base on current and future activities in the first and second aquifer with the purpose to jointly identify opportunities and bottlenecks with respect to the sustainable use of the subsurface. The method proved to be an adequate tool to build a common picture of important win-win situations and trade-offs, which in a next step need to be further elaborated.**


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