Portugal - Atlas do Ambiente III.2 - Acidez e Alcalinidade dos Solos

Summary

The Soil Acidity and Alkalinity Map of Portugal shows the soils group- ed according to their reaction, into soil pH classes. lt is based on more than 20 000 soil pH analyses and on the «Soil Associations» of the Soil Map of Portugal drawn by Cardoso, Bessa & Marado (1973 a) in the scale 1/1 000 000. an