Chuvas, erosividade, erodibilidade, uso do solo e suas relações com focos erosivos lineares na alta bacia do rio Araguaia
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Data
2007-12
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Resumo
The intensive process of land occupation by farmers in the tropical savanna region of Midwest
Brazil during the last three decades has promoted several environment impacts, such as the
occurrence of gully erosion processes as a consequence of intensive deforestation. Just in the
Upper Araguaia River Basin, it was identified more than 300 large and medium gully features,
which are related with the high natural susceptibility of the sandy soils; high erosivity and erodibility; inadequate land-use; lack of soil conservation practices; and a high annual rainfall
index during the rainy season. The objective of this research was to identify spatial relationships
between rainfall distribution, erosivity, erodibility, land-use, and gully erosion distribution,
which may support environmental planning actions related to land use conservation.
Quantitative results show a high correlation between gully erosion distribution and high
erosivity/erodibility and inadequate land-use.
Descrição
Palavras-chave
Chuvas, Rainfall, Erosão hídrica, Erodibilidade, Uso e ocupação do solo, Risco à erosão, Erosivity, Erosion risks, Gully erosion, Erodibility, Land use and management
Citação
SANTANA, Neiva Maria Pio de; CASTRO, Selma Simões de; STONE, Luis Fernando; SILVA, Silvando Carlos da. Chuvas, erosividade, erodibilidade, uso do solo e suas relações com focos erosivos lineares na alta bacia do rio Araguaia. Sociedade & Natureza, Uberlândia, v. 19, n. 2, p. 103-121, dez. 2007.