Tesis
Condutividade hidráulica efetiva e erodibilidade entressulcos de solos da bacia do Rio das Mortes
Fecha
2016-02-23Registro en:
BOCUTI, Edwaldo Dias. Condutividade hidráulica efetiva e erodibilidade entressulcos de solos da bacia do Rio das Mortes. 2016. 75 f. Dissertação (Mestrado em Agricultura Tropical) - Universidade Federal de Mato Grosso, Faculdade de Agronomia, Medicina Veterinária e Zootecnia, Cuiabá, 2016.
Autor
Amorim, Ricardo Santos Silva
http://lattes.cnpq.br/7163717039353133
Amorim, Ricardo Santos Silva
841.493.346-91
http://lattes.cnpq.br/7163717039353133
Weber, Oscarlina Lúcia dos Santos
141.427.751-20
http://lattes.cnpq.br/6385657569274801
841.493.346-91
Chig, Léo Adriano
253.589.138-74
http://lattes.cnpq.br/6178305757778861
Institución
Resumen
For the calibration and validation of water erosion prediction models in
the areas of Cerrado is of fundamental importance the data acquisition in field. The
objective of this study was to determine the effective hydraulic conductivity (Ke) and
rill erodibility (Ki) and their correlation with physical and physical-hydric
characteristics the soil. This work was developed in two chapters, the first entitled
"Determining in field of effective hydraulic conductivity and interrill erobibilidade of
soil Mato Grosso," and the second "Correlation of effective hydraulic conductivity and
erodibility interrill with the physical attributes and physico-hidric the Cerrrado soil".
This study was conducted in six areas called Pasto ponto 1 (PP1), Pasto Ponto 2
(PP2), Agrícola ponto 1 (Ap1), Agricola ponto 2 (Ap2), Cerrado1 (C1) and Sâo
vicente1 (SV1), located in municipalities of Campo Verde and Santo Antônio do
Leverger of Mato Grosso. For determination of Ki and Ke was used and a rain
simulator. Correlation analyzes were initially performed with all six areas of study
using the following soil properties: soil particle size, water clay dispersion,
flocculation of clay, organic matter, total porosity, micro and macro porosity,
evaluation index aggregate stability, bulk density and silt / clay ratio. The erodibility
interrill are 2,44x105, 1,32x106, 1,56x105, 2,47x105, 8,56x104, 5,93x105 kg.s.m-4
to
Ap1, Ap2, Pp1, Pp2, C1 and SVp1 respectively. The determined effective hydraulic
conductivity are 81.52; 109.94; 30.63; 24.49; 48.31; and 28.37 mm h -1
for Pp1; Pp2;
Ap1, Ap2, C1 and SV1, respectively. The rill erodibility was different (p≤0.05)
between Ap2 and C1 areas. The hydraulic conductivity was different (p≤0.05)
between Pp2 and Ap2 (p≤0.05). The attributes total sand, organic matter and
percentage clay were significantly correlated with the independent effective hydraulic
conductivity of the soil textural class of the study, showing that these attributes can
be good predictors of effective hydraulic conductivity. For sandy soils attributes
coarse sand, very fine sand and aggregate stability index present greater potential
for predicting erodibility interrill. For clay soils attributes coarse sand, medium sand,
average diameter, geometric mean diameter and aggregate stability index showed
greater potential for predicting erodibility interrill.