Data from: Fog controls biological cycling of soil phosphorus in the Coastal Cordillera of the Atacama Desert

In this study, we collected topsoil samples (0‒10 cm) from each of 54 subsites, including sites in direct adjacency (< 10 cm) and in 1 m distance to plants, along an aridity gradient across the Coastal Cordillera in the Atacama Desert. The soluble salts anions (NO3‒, Cl‒, and SO42‒) and cations (Ca2+, Na+, Mg2+ and K+) were tested. And we performed soil sequential P fractionation and the oxygen isotope values of HCl-extractable Pi (δ18OHCl-Pi).