Implicações naturais e antrópicas responsáveis pelo desencadeamento de feições erosivas no Parque do Goiabal em Ituiutaba (MG)
Data
2017-03-09
Autores
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Universidade Federal de Goiás
Resumo
Municipal Park of Goiabal in the city of Ituiutaba (MG). This Park is located in the southern
portion of the city and it is the only Sustainable Use Conservation Unit in the city. Goiabal was
founded in 1977 but it was only inaugurated on May 1, 1986, in order to protect the exceptional
attributes of the region's nature, to fully protect flora, fauna and other natural resources and to be
used for educational, scientific, recreational and tourist purposes. The literature review sought to
insert the research area in a broader context of soil degradation in protected areas, mainly due to
soil characteristics and anthropic actions. The data of area characterization, sample collection,
photographic records and erosion dimensions were obtained through fieldwork. The physical and
mechanical characteristics of the soil were obtained through laboratory analysis of two samples
taken at different points of the study, with grain size, humidity, particle density, compaction,
organic matter and pH. Regarding the dimensions, the feature is 171 meters long, depth between 1
and 5.6 meters and width between 2.5 and 12.4 meters. The environmental problems in the Park are
directly related to the use of the soil in the adjacent areas of the CU. This happens, although
Goiabal's main function is to preserve and to explore tourism and environment, because it presents
several conflicting situations as it is located within the urban area of the city and suffers all the
possible pressures of an urban area. One of the main factors responsible for the soil degradation of
the area is the decrease in rainwater infiltration and the increase of the velocity and volume of the
surface runoff, due to soil sealing and a poor drainage system, increasing the erosive potential of
rainfall. The analyzed soils presented, mostly, sandy texture, composed by clay minerals and acid
pH. The compaction curve showed that the soil in the first erosion step requires less moisture to
reach the maximum compaction point than the soil that is in the second step. Thus, it is necessary
to think about the problem of urban erosion from the point of view of bad planning in the
implementation of allotments and the appropriate disposal of rainwater.
Descrição
Palavras-chave
Erosão, Erosão urbana, Solo, Parque do Goiabal, Ituiutaba (MG), Erosion, Urban erosion, Soil, Goiabal Park
Citação
BRAGHIROLI, T. L. P. Implicações naturais e antrópicas responsáveis pelo desencadeamento de feições erosivas no Parque do Goiabal em Ituiutaba (MG). 2017. 171 f. Dissertação (Mestrado em Geografia) - Universidade Federal de Goiás, Catalão, 2017.