@MastersThesis{Costa:2018:BaRiCu,
author = "Costa, Lidiane Cristina Oliveira",
title = "Trajet{\'o}ria das mudan{\c{c}}as de uso e cobertura da terra em
estimativas de perda de solo em uma regi{\~a}o de expans{\~a}o
agr{\'{\i}}cola na Amaz{\^o}nia: a bacia do rio Curu{\'a}-Una,
PA",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "2018",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "2018-07-30",
keywords = "uso e cobertura da terra, perda de solo, trajet{\'o}ria, land
cover and land use, soil loss rates, trajectories.",
abstract = "Pol{\'{\i}}ticas p{\'u}blicas realizadas nas d{\'e}cadas de
1960 e 1970 com o objetivo de integrar a regi{\~a}o
amaz{\^o}nica ao sudeste do Brasil resultaram em uma
migra{\c{c}}{\~a}o intensiva e no desenvolvimento de grandes
projetos, que resultou na convers{\~a}o de vastas {\'a}reas de
cobertura florestal em diferentes tipos de uso e cobertura da
terra (UCT). As mudan{\c{c}}as de UCT podem afetar a
biodiversidade, aumentar as emiss{\~o}es de gases de efeito
estufa e afetar a qualidade da {\'a}gua atrav{\'e}s da
eros{\~a}o, sedimenta{\c{c}}{\~a}o e eutrofiza{\c{c}}{\~a}o.
A identifica{\c{c}}{\~a}o e o monitoramento das {\'a}reas mais
suscet{\'{\i}}veis {\`a}s mudan{\c{c}}as de UCT poderiam
apoiar pol{\'{\i}}ticas p{\'u}blicas e planejamento
territorial. Seguindo essa abordagem, o objetivo deste estudo foi
avaliar as taxas de perda de solo na Bacia do Rio Curu{\'a}-Una,
sudoeste do Par{\'a}, de 1984 a 2014. Essa regi{\~a}o tem
sofrido grandes altera{\c{c}}{\~o}es na cobertura florestal
desde a d{\'e}cada de 70 e, mais recentemente, sofreu o impacto
da expans{\~a}o do agroneg{\'o}cio, que ocorreu
preferencialmente nas {\'a}reas de planalto. Diferentes tipos de
modelo t{\^e}m sido utilizados para estimar perda de solos. Nesse
estudo, utilizamos o modelo USLE e diferentes tabelas de
refer{\^e}ncia para estimar fatores associados {\`a}
prote{\c{c}}{\~a}o exercida pela cobertura da terra e {\`a}
erodibilidade. As trajet{\'o}rias das taxas de perda de solo e as
mudan{\c{c}}as de UCT foram identificadas, e uma an{\'a}lise
combinada das mesmas foi realizada. Os resultados mostraram que as
taxas de perda de solo na Bacia de Curu{\'a}-Una aumentaram 243%
de 1984 a 2014, com as maiores incertezas associadas {\`a}s
mudan{\c{c}}as de UCT e os fatores de erodibilidade. As
trajet{\'o}rias da UCT mostraram uma maior remo{\c{c}}{\~a}o da
cobertura vegetal no munic{\'{\i}}pio de Uruar{\'a}, que possui
relevo acidentado e cobertura de pastagens dominantes, e nos
munic{\'{\i}}pios de Belterra, Moju{\'{\i}} dos Campos e
Santar{\'e}m, em uma {\'a}rea de cultivo anual plana. Nestas
{\'a}reas, ocorreram maiores taxas de perda de solo pr{\'o}ximo
{\`a} barragem de Curu{\'a}-Una, indicando poss{\'{\i}}veis
impactos nos corpos d'{\'a}gua. A an{\'a}lise revelou
padr{\~o}es importantes de perda de solo e vegeta{\c{c}}{\~a}o
que devem ser considerados no planejamento ambiental territorial e
poderiam ser usados como um guia para a defini{\c{c}}{\~a}o
adequada do uso da terra que busca solo, {\'a}gua,
conserva{\c{c}}{\~a}o florestal. ABSTRACT: Public policies
carried out in the 1960s and 1970s aiming to integrate the Amazon
region into south-eastern Brazil resulted in an intensive
migration and the development of huge projects, which trigged the
conversion of vast areas of forest cover into different types of
land cover and land use (LCLU). Changes in LCLU can affect
biodiversity, increase greenhouse gas emissions, and impact water
quality through erosion, sedimentation and eutrophication. The
identification and monitoring of the most susceptible areas to
changes in LCLU could support public policies and territorial
planning. Following this approach, the objective of this study was
to evaluate the soil loss rates at Curu{\'a}-Una River Basin,
southwest of Par{\'a} state, from 1984 to 2014. Since 1970s, the
forest in this area has been impacted by human activity, and
recently, also by agribusiness expansion, which occurred
preferentially in plateau areas. Different models have been used
to estimate soil loss rates. In this study, the Universal Soil
Loss Equation (USLE) was used with different data sources of
erodibility and LCLU values. LCLU and soil loss rates trajectories
were identified, and a combined analysis of them was carried out.
Results showed that soil loss rates in the Curu{\'a}-Una Basin
have increased by 243% from 1984 to 2014, with the highest
uncertainties associated with the LCLU and the erodibility
factors. The LCLU trajectories showed a greater removal of
vegetation cover in Uruar{\'a} municipality, which has a rugged
relief and pastureland cover dominant, and in Belterra,
Moju{\'{\i}} dos Campos and Santar{\'e}m municipalities, on a
flatted annual crop area. In these areas, occurred increased soil
loss rates near Curu{\'a}-Una dam indicating potential impacts in
the water bodies. The analysis revealed important patterns of soil
and vegetation loss that should be considered in territorial
environmental planning and could be used as a guide for adequated
land use definition that seeks soil, water, forest conservation.",
committee = "Kampel, Silvana Amaral (presidente) and Escada, Maria Isabel
Sobral (orientadora) and Affonso, Adriana Gomes (orientadora) and
Giarolla, Ang{\'e}lica and Monteiro, Ant{\^o}nio Miguel Vieira
and Val{\'e}rio Filho, Mario",
englishtitle = "Trajectories of land use and land cover changes in soil loss rates
in a agribusiness expansion area in the Amazon: the Curu{\'a}-Una
Basin, PA.",
language = "pt",
pages = "100",
ibi = "8JMKD3MGP3W34R/3RFKPAP",
url = "http://urlib.net/ibi/8JMKD3MGP3W34R/3RFKPAP",
targetfile = "publicacao.pdf",
urlaccessdate = "27 abr. 2024"
}