Maps of erosion risk on arable land
Metadata
Djodjic, F. & Markensten, H. (2019). From single fields to river basins: Identification of critical source areas for erosion and phosphorus losses at high resolution. Ambio, 48 (10), 1129–1142. https://doi.org/10.1007/s13280-018-1134-8
The maps show where there is an estimated risk of erosion occurring and cannot be used on their own to assess the risk of erosion at a site, but should be supplemented with additional information.
Data from the erosion maps are included in two web-based map stories, which can be used to, among other things, identify areas at risk of flooding and to assess risks of surface runoff and erosion. The map stories are in Swedish:
- Norrström: Rätt åtgärd på rätt plats - stöd och data för att minska näringsläckage från jordbruksmark.
- Himleån: Rätt åtgärd på rätt plats - stöd och data för att minska näringsläckage från jordbruksmark.
The erosion risk maps can be viewed online with the county administrative boards' map service: Övergödningskartan.
The maps show where there is a risk of erosion on Swedish arable land. Erosion is a process whereby soil particles are slurried into and carried away by water flowing on the ground.
The map product consists of two different types of maps: raster (geotif) maps showing where the risk of soil particles being released from the soil surface is greatest, and line polygons (shapefiles) showing where the risk is greatest for water flowing on the surface to transport large quantities of soil particles. Both types of map show the risk of erosion in seven risk classes.
The maps can be used, among other things, to identify areas where measures can be implemented to make it more difficult for soil particles to be released and to reduce erosion. They cover an area of 202 279 km², from the Dalälven river basin in the north to the Southern Baltic Sea water district in the south. The area covers 90% of Sweden's agricultural land.
Download data
Data can be downloaded from the Swedish Board of Agriculture website (the page is in Swedish only): Kartor med information om svensk åkermark.