[1] Univ Valencia, Dept Geog, Soil Eros Res Grp SEDER, Valencia 46010, Spain
[2] Univ Seville, Fac Quim, Dept Cristalog Mineral & Quim Agr, MED Soil Res Grp, Seville 41012, Spain
[3] Univ Politecn Valencia, Escuela Politecn Super Alcoy, Dept Econ & Ciencias Sociales, Alicante 03801, Spain
[4] Univ Miguel Hernandez, GEA Grp Edafol Ambiental, Dept Agroquim & Medio Ambiente, Alicante 03202, Spain