@InProceedings{MedeirosGiarOliv:2017:EsFaL,
author = "Medeiros, Grasiela de Oliveira Rodrigues and Giarolla,
Ang{\'e}lica and Oliveira, Gilvan Sampaio de",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "Estimativa do fator L da Equa{\c{c}}{\~a}o Universal da Perda de
Solo em escala regional ? aplica{\c{c}}{\~a}o para o Estado de
S{\~a}o Paulo",
booktitle = "Anais...",
year = "2017",
editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz
Eduardo Oliveira e Cruz de",
pages = "1724--1731",
organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 18. (SBSR)",
publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
address = "S{\~a}o Jos{\'e} dos Campos",
abstract = "To integrate studies in the Earth System Science context, erosion
models were applied only in local scale have been adapted to
regional scales such as the Universal Equation for Soil Loss
(USLE). Among the parameters required by USLE to estimate soil
loss rates the slope length (L) is the main factor favored by
advances in the acquisition of Remote Sensing data, especially
topographical, and the development of Geographic Information
Systems (GIS) and it responsible for satisfactory local-regional
adaptation of the model. In this context, the aim of this study
was to obtain the L factor map for the Sao Paulo State using the
equation of Desmet and Govers (1996), a methodology that employs
the concepts of flow direction and accumulate area. Therefore, it
was used ArcGIS software and elevation data from TOPODATA project
that have a spatial resolution of 30 m. The results showed that
the lowest values occurred in interfluves (hilltops) and larger
towards the bottom of the valley where there is significant
distances from the turning point and flow convergence, and steep
slopes (same behavior as the accumulative area). Thus, the higher
the L value, the greater the speed and the concentration of
runoff, which allows us to infer that these are the areas more
conducive to the occurrence of erosion.",
conference-location = "Santos",
conference-year = "28-31 maio 2017",
isbn = "978-85-17-00088-1",
label = "59665",
language = "pt",
organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
ibi = "8JMKD3MGP6W34M/3PSLP7S",
url = "http://urlib.net/ibi/8JMKD3MGP6W34M/3PSLP7S",
targetfile = "59665.pdf",
type = "Risco ambiental",
urlaccessdate = "27 abr. 2024"
}