@Article{GomesSimForOmeDal:2017:UsGeEs,
author = "Gomes, Luciene and Sim{\~o}es, Silvio J. C. and Forti, Maria
Cristina and Ometto, Jean Pierre Henry Balbaud and Dalla Nora,
El{\'o}i Lennon",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Universidade Estadual Paulista (UNESP)} and {Instituto Nacional
de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)}",
title = "Using geotechnology to estimate annual soil loss rate in the
brazilian cerrado",
journal = "Journal of Geographic Information System",
year = "2017",
volume = "9",
pages = "420--439",
keywords = "Erosion, Soil Conservation, Geographic Information System (GIS),
Tropical Savanna, MATOPIBA.",
abstract = "Soil erosion is a serious environmental problem that has adversely
affected the worlds food production through the reduction of land
productivity and water availability. The present study estimated
annual soil loss rate and its spatial distribution in the most
important Brazils agricultural region, the Brazilian Cerrado,
using Revised Soil Loss Equation (RUSLE) model into Geographic
Information System (GIS) framework. For this purpose, the soil
erosion annual rate was determined in function of RUSLE model
factors: rainfall erosivity (R), soil erodibility (K), topography
(LS), crop management (C) and supporting conservation practice
(P). All factors were obtained from literature. They were
processed and integrated into a GIS, resulting in a map of annual
soil loss rate. The methodology applied showed acceptable
precision and it was possible to identify the most susceptible
areas to water erosion. The average estimated rate of soil loss
for the entire Cerrado was 12.8 t\∙ha\−1
\∙yr\−1 . Large part of the Cerrado is under low
soil loss zone corresponding to 79.91% of total surface area,
while 15.70%, 3.74%, and 0.66% are under moderate, high, and very
high, respectively. The average estimated rate of soil loss in
areas used for silviculture was 52.1 t\∙ha\−1
\∙yr\−1 . In semi-perennial, perennial, and annual
crops cultivation were 29.3, 23.9, and 9.8 t\∙ha\−1
\∙yr\−1 , respectively, while in the pasture was
13.3 t\∙ha\−1 \∙yr\−1 . Except for
annual crops, all farm and silviculture areas showed average soil
loss ranging from moderate to high rate. These results suggest
that the implementation of more effective management techniques
and conservation practices are necessary for the Cerrado to
maintain and to improve land productivity by ensuring national and
international food demands.",
doi = "10.4236/jgis.2017.94026",
url = "http://dx.doi.org/10.4236/jgis.2017.94026",
issn = "2151-1950",
language = "en",
targetfile = "gomes_using.pdf",
urlaccessdate = "27 abr. 2024"
}