Spatial Discrepancies Between Annual Cropland Extent and Sampling-Period Agricultural-Use Extent: Consequences for Soil Organic Carbon Aggregation
Annual cropland data are widely used to delimit agricultural land for soil organic carbon (SOC) mapping and spatial aggregation, yet mapped cropland may not coincide with land under agricultural use at soil sampling. Such a mismatch changes the land entering aggregation and may alter both the aggregated mean of predict...