The map shows the concentration of organic carbon in the surface layer of soil.
The soil organic carbon concentration (%) is shown in the following categories
|Low - less than 1.5 %|
|Moderate - between 1.5 and 3 %|
|High - more than 3 to 5 %|
|Humose - more than 5 to 12 %|
|Organo-mineral - more than 12 to 35 %|
|Organic - greater than 35 %|
Cultivated soils usually have lower organic carbon concentrations in their surface layer (less than 5 %) than semi-natural soils.
The topsoil organic carbon concentration in this data set has been calculated using data from the Scottish Soils Knowledge and Information Base (SSKIB).
The topsoil organic carbon map is based on the 1:250 000 soil map and calculated using data from the Scottish Soils Knowledge and Information Base (SSKIB). The topsoil carbon concentration of each soil type within the soil map unit was determined taking account of land cover. Missing data were firstly estimated using Loss on Ignition values derived from mineral and organic horizons; if this was not possible an indicative value was attributed from similar soil series. This map should be cited as: 'Lilly, A., Baggaley, N. & Donnelly, D. (2012). Map of soil organic carbon in top soils of Scotland. Map prepared for EU project GS-SOIL - Assessment and strategic development of INSPIRE compliant Geodata-Services for European Soil Data. ECP-2008-GEO-31800'.
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You can click on the map, or insert a grid reference or post code, to find out the carbon concentration in the surface layer of soil. You can also download the map data. The map covers the entire country and can be used to view regional differences in topsoil organic carbon concentrations.
Be aware: This map is produced at a fixed scale; zooming-in does not change the resolution of the map.
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