Interfaces entre unidades de conservação e bacias hidrográficas na região de Terra Ronca
Nenhuma Miniatura disponível
Data
2016-10-07
Autores
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Goiás
Resumo
The study area has approximately 6 thousand km2 and is composed of four basins (Água
Quente, São Mateus, São Vicente and São Domingos) tributaries of the Paranã River and
located in a transition area between the Vão do Paranã (GO) and Oeste Baiano (BA). Among
these four basins, (São Mateus and São Vicente) are overlain by two conservation units
(Parque Estadual de Terra Ronca and APA Serra Geral de Goiás). The other two basins (Água
Quente and São Domingos) are contiguous to the former. The study area contains karstic
environments concerning the geological unit of the Bambuí Group, as well as the sandstones
of the Urucuia Group, that associated to a polygenic morphosculture and to poorly structured
soils make this area naturally vulnerable. In these terms, the research aims to analyze the
environmental dynamics between the UC and the hydrographic basins, since the basins
inserted in the UC can have their use and dynamically disciplined by the environmental
characteristics, while the outer basins do not. The objective is also to understand how the
expansion and consolidation of the agricultural frontier in the area of study can be related to
the intensification of the vulnerability processes of the study region between 1990 and 2014.
It also aims to understand how the variables environmental conditions favor the occupation
of the region's lands, as well as understanding soil degradation and alteration mantles (water
erosion processes and mass movements). The research uses as theoretical foundation the
integrated analysis of the landscape from the interaction between hydrographic basins and UC
as units of analysis. The selected method was the multitemporal monitoring of land use and
coverage, as well as observation of morphopedological and climatic variables, as well as the
empirical analysis of the erosive phenomenon and mass movements, which allowed the
distinction of vulnerable sectors to soil loss. Thus, it was verified that the most vulnerable
basin is the Água Quente river basin, followed by basin of the São Mateus, São Domingos and
São Vicente rivers. It was also observed that the low sectors of these basins are predominantly
pasture-occupied, while the high sectors has for predominance the agricultural commodities
areas. The most suppressed phytophysiognomies were clean field and dirty field for settlement
of agriculture and cerrado ralo for the pastures. The anthropogenic occupation of this region
was encouraged by several policies, which contributed to the agricultural activities. In this
sense, the UC are important in resources maintaining, since the presented area in 2014 was
just over 50% of the remaining vegetation. In addition, the study area is strongly influenced
by the morphological conditions, since the remaining vegetation is, predominantly in rocky
areas and poorly structured soils. Finally, it can be said that, the collection, treatment and
understanding of these different informations was fundamental importance for the evaluation
of the synergy between the hydrographic basins and UC in the area of the study.
Descrição
Palavras-chave
Citação
ROSA, L. E. Interfaces entre unidades de conservação e bacias hidrográficas na região de Terra Ronca. 2016. 147 f. Dissertação (Mestrado em Geografia) - Universidade Federal de Goiás, Goiânia, 2016.