Avaliação da recuperação da estrutura de um solo construído em áreas de mineração de carvão utilizando um método visual

Abstract

Among the activities that most cause soil degradation is mining, which consisto f mining underground minerals such as coal, gold, silver, precious stones, sand, sílica, feldspar, among others. In this sense, qualitative measures of soil structure obtained direcly in the field can represent rapid, safe and objective evaluations ando f low cost to infer about the qaulity of the soil. Validating the methodology of visual evaluation of soil structure (VESS) in soils constructed correlating their results with the physical conditions of a soil built after coal mining is the main objective of the presente study, verifying the most suitable plant species to promote the recovery of the quality of the mined soils, mainly with respect to the improvement of the soil structure. Soil sampling was performed in the layers of 0,00 – 0,10 and 0,10 – 0,20m. Two soil samples with non-preserved struture were collected by treatment, totaling 32, which were manually derouted at their weak points anda ir dried to determine physical atributes and chemical atributes. The data were submitted to analysis of variance and, if there was treatment effect, the means were evaluated by the Pearson Correlation method (p<0,05) to verify if there is a positive correlation between the physical atributes of the soil analyzed with the results of VEE. The relationship of the methodology of the visual evaluation of the soil structure with physical atributes of the soil presented weak or moderate correlations, which suggests that, for the area of the experimente with constructed soil a visual quality can be associated to quantitative qualities.