SoilGrids250m 2.0 - Cation exchange capacity at ph7
cec
Mapfile: cec
WMS / WCS: https://dev-maps.isric.org/mapserv/cec
Use this link as a WMS/WCS/WFS connection in QGIS or ArcGIS.
Preview layer: cec_0-5cm_mean (Cation exchange capacity at pH7 0-5cm mean (mmol(c)/kg))