Fig. 5From: The influence of grazing and cultivation on runoff, soil erosion, and soil nutrient export in the central highlands of EthiopiaMean concentration of total nitrogen (N) (a), available phosphorus (P) (b), exchangeable Potassium (K) (c), and soil organic carbon (OC) (d) from the sediment leaving the experimental plots. Different letters in each year are significantly different at 0.05 level. GL grazing land, CL cultivated land. Error bars are standard errors of the meansBack to article page