Banca de DEFESA: LEONARDO DURVAL DUARTE GUIMARAES

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : LEONARDO DURVAL DUARTE GUIMARAES
DATA : 17/02/2020
HORA: 09:00
LOCAL: Departamento de Solos, sala 24
TÍTULO:

Pedometry in the analysis of soil physical-chemical properties and interactions with heavy metals, in the Serrana Region of the State of Rio de Janeiro.

PALAVRAS-CHAVES:

Contamination, heavy metals, agrochemicals, geostatistics, data mining.

PÁGINAS: 194
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Ciência do Solo
ESPECIALIDADE: Química do Solo
RESUMO:

The present work is being carried out in two study areas, the first being the Serrana Region of the State of Rio de Janeiro, and the second agricultural area of the Micracacia of Barracão dos Mendes, Nova Friburgo - RJ. These areas are characterized by a large concentration of family farmers in the State of Rio de Janeiro, producers of vegetables to supply the Metropolitan region, making this region considered a major agricultural center. The knowledge of the natural contents of metals in soils is considered as a reference of the content in the environment, which is very interesting when studying the impacts of anthropic activities on the environment, as well as studies of contamination and soil pollution. The objective in the first area of study is to evaluate the distribution of the natural contents of heavy metals, as well as to identify which factors are influencing this distribution. And the objective in the second area of study is to evaluate the distribution of the heavy metals contents, as well as to identify which factors are influencing the enrichment of the soil with these elements. For this purpose, representative points were selected in both regions, being in the Serrana Region 62 points whose area had not suffered any or low anthropic activity of the region, to collect samples of soils at depths 0-0.2 and 0.2 to 0.4m. And in the Barracão dos Mendes Microbacia 498 points in agricultural areas. The samples were submitted to soil fertility determination and determination of total metals (Fe, Al, Mn, Cd, Co, Cr, Cu, Ni, Pb and Zn). R software was used for geostatistical analysis (ordinary kriging), as well as for the data mining methods (Random Forest, Artificial Neural Networks and Boosted Regression Trees) and the final maps of the distribution of the natural contents for the two depths will be made in ArcGIS v.10.4 software. It is expected that with the interpretation of the distribution maps of the metals contents in the Serrana Region of Rio de Janeiro we can indicate the influence of lithology, soils and relief in the natural contents of the studied metals. As with the interpretation of the distribution maps of the metals contents in Barracão dos Mendes Microbacia, we are able to identify the influence of antropic activity on the distribution of metals.

MEMBROS DA BANCA:
Interno - 386715 - EDUARDO LIMA
Interno - 387263 - NELSON MOURA BRASIL DO AMARAL SOBRINHO
Externa ao Programa - 1412091 - ERICA SOUTO ABREU LIMA
Externo à Instituição - CESAR DA SILVA CHAGAS
Externo à Instituição - WALDIR DE CARVALHO JUNIOR