Multivariate analysis for estimating the erodibility of latosols from Alagoas

• Autor(a) principal: Ferreira Martins, Felipe
• Data de Publicação: 2023
• Outros Autores: Rodrigues Nascimento, Mayara, Rodrigues do Nascimento, Maiane, Tertuliano De Gois, Renato Luis, Lins Dos Santos , Márcio Aurélio, Gomes Dos Santos, Cícero
• Tipo de documento: Artigo
• Idioma: por; eng
• Título da fonte: Diversitas Journal
• Texto Completo: https://diversitasjournal.com.br/diversitas_journal/article/view/2610
• topic: Agrupamentos; Componentes principais; Solo; Correlação; Clusters, Componentes Principales, Correlación, Suelo; Clusters; Principal components; Correlation; Soil

Soil erodibility is one of the most important factors in understanding the erosion process. Considering the need to explore methods for determining erodibility values ​​by simulated rainfall, the objective was to evaluate, using multivariate statistics tools, the erodibility of Oxisols from Alagoas influenced by physical, chemical and aggregate stability attributes. The research activities were carried out at the Campus Arapiraca, of the Federal University of Alagoas, where Oxisols in the Red, Yellow and Red-Yellow suborders were used, collected in two of the three geomorphological regions of the state of Alagoas. The prediction of the correlation metrics demonstrate that the cluster grouping indicates that the best correlations found were between the variables: clay and clay dispersed in water (r = 0.94), lime and sand (r = 90), and between WEPP and the interrill erodibility factor (r = 1.00). These strong positive correlations are proven through the scatter plots, the confidence regions, the dendrogram, the density estimate and the ellipses. Multivariate statistics allows a better understanding of the behavior of the correlations between the physical, chemical and stability attributes of aggregates with the erodibility of Oxisols of Alagoas, as well as demonstrates the relationship of the variables studied with some of the three suborders of soils of Alagoas (Oxisols of Alagoas, Red and Red-Yellow).