Banca de DEFESA: RANIELE ADAME GOMES

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : RANIELE ADAME GOMES
DATE: 24/02/2022
TIME: 09:00
LOCAL: meet.google.com/ske-tpxw-zjj
TITLE:

Experimental procedure combining single ring and sprinkler infiltrometers: Hydrodynamics interpretation in soils under agroecosystems of the Sertão do Pajeú.

KEY WORDS:

Hydraulic conductivity, rain simulator, infiltration, beerkan.

PAGES: 96
BIG AREA: Engenharias
AREA: Engenharia Sanitária
SUMMARY:

Knowledge of the hydrodynamic properties of the soil is essential for simulating hydrological processes and contributes to solving problems associated with agriculture, water resources, and environmental conservation. The removal of natural vegetation from the Caatinga, the primary biome of the semi-arid region, linked to extensive periods of drought, results in a scenario of soil degradation. Agroforestry systems (SAF's) emerge as alternatives to minimize the environmental degradation of soils in this region. It is essential to understand the capacity to recover the hydraulic functioning of soils of the different management systems that make up or integrate this environment of water limitation. Thus, it was proposed to evaluate the influence of three types of soil cover (pasture, Caatinga, and agroforestry) on a set of hydrodynamic parameters inherent to the infiltration of water in the soil, such as hydraulic conductivity (K_s) and sorptivity (S), and others that help in the description of retention curves q(h) and hydraulic conductivity K(q), essential to the analysis of physical quality and understanding of water dynamics in these soils. Experimental procedures with a single ring and sprinkler infiltrometers allowed the determination of Ks and S.The semi-physical method Beerkan Estimation of Soil Transfer parameters (BEST), based on infiltration measurements and granulometric soil distribution, allowed the characterization of normalization parameters (q_s, K_s and h_g) and shape (m or n and h) that describe the curves q(h) and  K(q), according to the van Genuchten and Brooks & Corey models, respectively. Most of the results expressed differences in the physical-hydric quality of the soils, with greater emphasis on the areas of Caatinga and agroforestry system. The agroforestry system proved to be resilient to recover degraded areas, potentially replacing pasture.

BANKING MEMBERS:
Externo à Instituição - SEVERINO MARTINS DOS SANTOS NETO
Presidente - 1646186 - EDUARDO SOARES DE SOUZA
Interno - 6384946 - MARCUS METRI CORREA