Banca de QUALIFICAÇÃO: GISELLE NERINO BRITO DE SOUZA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : GISELLE NERINO BRITO DE SOUZA
DATE: 29/05/2025
TIME: 14:00
LOCAL: LASS/EMBRAPA AMAZÕNIA ORIENTAL
TITLE:

SOIL WATER FLUX AND DYNAMICS IN AN OIL PALM AGROFORESTRY SYSTEM IN THE EASTERN AMAZON

KEY WORDS:

Soil water; Agroforestry system; Hydrological modeling; Hydrus 1-D

PAGES: 70
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Ciência do Solo
SPECIALTY: Física do Solo
SUMMARY:

Agroforestry systems (SAFs) have established themselves as a more resilient and sustainable alternative for agricultural production in tropical regions. Understanding the interaction between soil, plants, water, and atmosphere is essential for the sustainable management of agricultural systems, especially in tropical regions where the effects of climate change and soil degradation have intensified. This study aimed to evaluate the dynamics of soil water under an agroforestry system (SAF) composed of oil palm (Elaeis guineensis Jacq.), cocoa (Theobroma cacao L.), açaí (Euterpe oleracea Mart.), and forest species, located on a rural property in the municipality of Tomé-Açu, Pará. The region has a humid tropical climate, with an average annual temperature of 26.4°C and precipitation around 2,300 mm, concentrated between December and May. The study used data collected, from 2019 to 2024, through a micrometeorological observation tower installed in the SAF. The tower is equipped with instruments that record meteorological variables, including precipitation, air temperature and humidity, solar radiation and wind speed, and hydrological variables, such as soil moisture in different positions of the study area and soil depths. Among these variables, rainfall and evapotranspiration data, as they are used as inputs in the simulation model, require consistency and continuity, and cannot contain gaps. During the less rainy season, which has become increasingly intense and prolonged and is influenced by climatic phenomena, there is growing concern about plant performance and the possible impacts of reduced water availability. In the Amazon, even during the less rainy periods of the year, studies indicate that trees maintain the capacity to extract water from the deepest layers of the soil, where there are signs of greater water storage. Simulations of water flows in the soil were performed using the Hydrus-1D model, considering the physical characteristics of the soil, boundary conditions, effective precipitation and crop evapotranspiration. The simulations allowed us to analyze the storage and movement of water in the soil profile over time, contributing to the understanding of water behavior in AFSs. The results provide important technical support for improving management practices that promote water and soil conservation in AFSs in the Amazon.

COMMITTEE MEMBERS:
Presidente - ***.920.632-** - ALESSANDRO CARIOCA DE ARAÚJO - UFRA
Interno - ***.474.077-** - STEEL SILVA VASCONCELOS - UFRA
Externo à Instituição - ALAILSON VENCESLAU SANTIAGO - EMBRAPA
Externo à Instituição - WENCESLAU GERALDES TEIXEIRA - EMBRAPA