Drystone walls for soil conservation (1)
by Antonio Jordán, University of Seville, Sevilla, Spain
In the Mediterranean, soil erosion causes rock fragments to surface easily, so that stony soils are very common. The stones on the ground are collected and used for the construction fences (dry stone walls) and separating properties by farmers.
In the photo, drystone walls are used to fight against soil erosion in an olive-cropped area in the Island of Mallorca, Spain.
Antonio Jordán (distributed via imaggeo.egu.eu)