Fig. 4. The relationship between clay content and soil organic C (SOC) concentration in 1261 agricultural soils in England and Wales. x axis = soil clay (<0.002 mm) concentration g kg-1; y axis = SOC g kg-1.
Fig. 4. The relationship between clay content and soil organic C (SOC) concentration in 1261 agricultural soils in England and Wales. x axis = soil clay (<0.002 mm) concentration g kg-1; y axis = SOC g kg-1.