Banca de DEFESA: JOSÉ ARTHUR DO NASCIMENTO RAMALHO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : JOSÉ ARTHUR DO NASCIMENTO RAMALHO
DATE: 24/01/2025
TIME: 08:00
LOCAL: Sala 212 do CTEC - UFRN - Natla - RN
TITLE:

Potential for Surface Runoff and Accelerated Erosion in the Potengi River Basin - RN

KEY WORDS:

Geoprocessing; Potengi River Basin; Multicriteria Decision Analysis; Sustainable soil management; and Territorial planning.

PAGES: 84
BIG AREA: Engenharias
AREA: Engenharia Sanitária
SUBÁREA: Recursos Hídricos
SPECIALTY: Sedimentologia
SUMMARY:

This study aimed to characterize the surface runoff potential and accelerated erosion risk in the Potengi River Basin (BHRP), located in Rio Grande do Norte, Brazil, using multicriteria analysis in a GIS environment. The methodology integrated 14 geoenvironmental variables, including lithology, slope, genesis and thickness of unconsolidated materials, permeability, drainage density, surface storage features, landforms, rainfall, land use and cover, erodibility, and soil proportions of clay and sand. Primary and secondary data were used, notably the collection of 110 soil samples and satellite imagery, resulting in two main cartographic products: the Surface Runoff Potential Map and the Accelerated Erosion Risk Map. The results indicated that the BHRP is predominantly characterized by low to moderate surface runoff potential (95% of the area with values equal to or less than 5). However, approximately 32.85% of the area presents a high risk of accelerated erosion (classes 7 and 8), attributed to factors such as crystalline basement, steep slopes, highly erodible sandy soils, and intensive anthropogenic activities, including land conversion for pasture and urbanization. The most vulnerable areas include the upper course of the basin, marked by steeper slopes, friable soils, and reduced vegetation cover, along with smaller patches in the central, northeastern, and exutory regions. The analyses highlight the importance of implementing sustainable soil management actions, such as restoring native vegetation and controlling inappropriate land use, particularly in critical areas, to mitigate erosion impacts and promote environmental sustainability.

COMMITTEE MEMBERS:
Presidente - 3060504 - CARLOS WILMER COSTA
Interno - 1149451 - OLAVO FRANCISCO DOS SANTOS JUNIOR
Externa ao Programa - 1662859 - KARINA PATRICIA VIEIRA DA CUNHA - UFRNExterno à Instituição - JOSÉ AUGUSTO DI LOLLO - UNESP