Summary
Abstract Purpose Poor physical conditions are a typical feature of urban soils that reduce their functionality regarding plant production or the water cycle. However, the increasing importance of urbanization makes it necessary to carry out additional research on physical properties of urban soils. Methods In this work, we have studied 64 urban soils in Santiago de Compostela (Spain), over different parent materials and under several land uses. We assessed their physical properties in the field and laboratory, with measures of bulk density and porosity, water holding capacity, aggregate stability and water-dispersible clay, permeability and resistance to penetration. The erosion risk was assessed by estimation of the k factor in the RUSLE. Results The results show that the soils present he
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