Regional variability of volcanic ash soils in south Ecuador : the relation with parent material, climate and land use
the soil properties, and to relate the spatial variability of these properties to the major trends in parent material, volcanic ash deposits and climate. The impact of human activities on the soil properties is assessed in a case study in the Machangara
This study assesses the impact of differences in geomorphology on soil genesis. By means of 8 soil profiles along 2 toposequences, the impact of topographic position, climate and parent material on the soil properties is evaluated. Besides