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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
PC1 vs PC2 score projection of the soil mineral composition in the four zones considered. Ellipses are built at a critical T2 value at p = 0.05, 0.01 and 0.001.