Evaluating Alternative Methods of Soil Erodibility Mapping in the Mediterranean Island of Crete

摘要: Abstract: Soil erodibility is among the trickiest erosion factors to estimate. This especially true for heterogeneous Mediterranean environments, where reliable and dense soil data are rarely available, interpolation methods give very low accuracies. Towards estimating erodibility, research so far has resulted in several alternatives mainly based on empirical formulas, physics-based equations or inference with expertise. The aim of this work was compare patterns derived by using United States Department Agriculture (USDA) formula from a geological map agricultural site. Kolymvari area, located western part Crete, an area covered olive groves citrus orchards, selected as study site work. Comparison spatial two showed significant differences ( i.e. , mean normalized difference value 0.52), while test “inference” alternative indicated accuracies (0.1475 RMS error). A comparison, however, values both that dissimilarities maps faded out. Moreover, highly risky areas provided were found be identical 88% whole