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Forests 2017, 8(4), 135; doi:10.3390/f8040135

Chemical and Biochemical Properties of Soils Developed from Different Lithologies in Northwestern Spain (Galicia)

1
Department of Agricultural, Food and Environmental Sciences, Università Politecnica delle Marche, Ancona, 60131, Italy
2
Department of Agricultural, Food and Environmental Sciences, Università degli Studi di Perugia, Perugia, 06121, Italy
3
Department of Agronomy, Food, Natural Resources, Animals and the Environment, Università degli Studi di Padova, Legnaro, 35020, Italy
4
Department of Soil and Agronomic Chemistry, Universidade de Santiago de Compostela, Lugo, 27001, Spain
*
Author to whom correspondence should be addressed.
Academic Editors: Adele Muscolo and Miroslava Mitrovic
Received: 15 March 2017 / Revised: 11 April 2017 / Accepted: 19 April 2017 / Published: 22 April 2017
(This article belongs to the Special Issue Soil Carbon Sequestration in Forests)
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Abstract

Physical and chemical soil properties are generally correlated with the parent material, as its composition may influence the pedogenetic processes, the content of nutrients, and the element biocycling. This research studied the chemical and biochemical properties of the A horizon from soils developed on different rocks like amphibolite, serpentinite, phyllite, and granite under a relatively similar climatic regime from Galicia (northwest Spain). In particular, the effect of the parent material on soil evolution, organic carbon sequestration, and the hormone-like activity of humic and fulvic acids were tested. Results indicated that all the soils were scarcely fertile because of low concentrations of available P, exchangeable Ca (except for the soils on serpentinite and phyllite), and exchangeable K, but sequestered relevant quantities of organic carbon. The scarce soil fertility was common to all soils independently of the parent material, and we attributed this similarity to the pedogenetic pressure induced by the climatic conditions. Also, the hormone-like activity of humic and fulvic acids, similar for all the soils, was probably due to pedogenesis. We hypothesized that the hormone-like activity of the humic substances helps growth and diffusion of vegetation in low fertile soils and, consequently, soil organic carbon sequestration too. View Full-Text
Keywords: amphibolite; serpentinite; phyllite; granite; humic substances; humic acids; fulvic acids; auxin-like activity; indoleacetic acid amphibolite; serpentinite; phyllite; granite; humic substances; humic acids; fulvic acids; auxin-like activity; indoleacetic acid
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MDPI and ACS Style

Cardelli, V.; Cocco, S.; Agnelli, A.; Nardi, S.; Pizzeghello, D.; Fernández-Sanjurjo, M.J.; Corti, G. Chemical and Biochemical Properties of Soils Developed from Different Lithologies in Northwestern Spain (Galicia). Forests 2017, 8, 135.

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