Based on knowledge from the validation areas, the entire MapField concept will be tested in selected demonstration areas. Relevant local stakeholders will be included in the process. Stakeholder engagement is important, as the goal of the MapField concept is to select and place measures (such as catch crops, mini-wetlands, etc.) in the landscape optimally, in order to efficiently reduce the losses of nutrients to the aquatic environment.
In the demonstration areas, the underground is mapped to a depth of approx. 70 meters below the fields to obtain detailed knowledge of the location of sand, clay etc. (See picture 1). This is important knowledge in order to understand the transport of water. Furthermore, subsurface redox zones (i.e. whether oxic or anoxic conditions are present) are delineated and reduction rates of nitrate is measured (See picture 2). This knowledge is important in order to determine the transport of nitrate to rivers, lakes and fjords.
Based on the data from the geophysical mapping, redox zonation etc. complex, site specific models are setup and detailed retention maps for the demonstration areas are produced. The maps are presented to farmers and other stakeholders to discuss practical application in relation to agricultural production.
In the MapField project, two demonstration areas consisting of ID15 catchments have been selected. The demonstration areas are located side by side north of Skive which is illustrated on picture 3. Read more about the two demonstration areas below.
Read more about the recent geological interpretations in the demonstration areas at Salling