Banca de DEFESA: FABIANE DA SILVA ARRUDA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : FABIANE DA SILVA ARRUDA
DATA : 29/03/2022
HORA: 14:00
LOCAL: Webconferencia
TÍTULO:

ESTIMATED CARBON STOCK IN SOILS OF THE PANTANAL BIOME UNDER
DIFFERENT TYPES OF USE IN THE CITY OF CACERES - MATO GROSSO,
BRAZIL.

PALAVRAS-CHAVES:

Climate change. Soil. Carbon stock.

PÁGINAS: 95
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Geociências
SUBÁREA: Geografia Física
ESPECIALIDADE: Geoecologia
RESUMO:

Considering that the carbon stock in soils is an alternative for mitigating greenhouse
gas emissions and global warming, the present research aimed to estimate the
carbon stock in soils of the Pantanal biome subjected to different types of use in the
city. Mato Grosso from Cáceres. For this, the methodological procedures used
included: collection of 72 soil samples in the layers of 0-10, 10-20 and 20-40 cm in 12
sampling points located in areas of Integration Crop-Livestock-Forest-ILPF, Pasture
and Forest reserve; separation of samples for granulometric analysis; determination
of soil density and total organic carbon content; quantification of carbon stock in the
soil and statistical analysis of the data obtained. The results obtained show that, in
the granulometric composition (sand, silt and clay), the predominant textural class
was the sandy loam (FrAr), being conferred by the highest concentration of sand
(coarse mining particles). The lowest density was observed in the soil of the Forest
Reserve, which is explained by its greater porosity and accumulation of biomass, in
an area with preserved native vegetation. By correlating the granulometry and total
organic carbon (TOC) variables, it was possible to observe a statistically significant
and negative correlation between clay and TOC, while for the sand variable the
correlation was significant and positive, indicating that the sand contents stood out
over the clay contents. Also the values obtained for the TOC and the soil carbon
stock (ECS) in all the treatments sampled were statistically compared, and the
differences found were significant. It was observed that the highest levels of carbon
are found in the surface layers (0-10 cm), both for TOC and for ECS, which show a
greater variation in TOC compared to the layers of 10-20 and 20-40 cm, thus
verifying that the Pasture and, later, the Forest Reserve, were the treatments that
provided the highest values of carbon content in the soil in comparison to the ILPF.
When the correlation between the layers and the carbon content in the soil was
performed, it was significant and negative, indicating that with increasing depth there
is a reduction in the carbon content in the soil. All this indicates that the local
differences identified in this research between the sampled areas and their types of
uses are reflected in differences in the levels of carbon stored in the soil, which is
consistent with other studies carried out in the state of Mato Grosso, in soils under
different uses from the earth.

MEMBROS DA BANCA:
Presidente - 130087004 - ALFREDO ZENEN DOMINGUEZ GONZALEZ
Interno - 82327001 - AMINTAS NAZARETH ROSSETE
Interno - 452.893.521-04 - JUBERTO BABILÔNIA DE SOUSA - IFMT
Externo à Instituição - MILSON EVALDO SERAFIM - IFMT