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Processo de erosão de um argissolo utilizando o modelo Wepp

Authors: Ibiapina, Thiago Vinicius Barros;

Processo de erosão de um argissolo utilizando o modelo Wepp

Abstract

A erosão do solo tem sido assunto de grande preocupação mundial devido às grandes mudanças no planeta. Dentre elas, estão as mudanças climáticas e as perdas na biodiversidade do planeta, mas outras mudanças pouco comentadas, mas não menos importantes são as mudanças nos ciclos de nitrogênio e fósforo. Parte deste estudo comprova que o carreamento de sedimentos gerados por erosão pode ser o grande vilão das eutrofizações de corpos de água. O presente trabalho foi realizado em área localizada no município de Tabapuã, noroeste do Estado de São Paulo, cujas coordenadas geográficas são: Latitude 21º 05' 57, S e Longitude 49º 01' 02 W. O objetivo principal deste trabalho foi estimar a erosão com o modelo WEPP em área cultivada de Tabapuã - SP, e com os seguintes objetivos específicos: 1) adaptar o modelo para uso em climas tropicais, como o clima brasileiro; 2) aplicar o modelo para a mensuração de cenários dos possíveis impactos causados pela erosão hídrica para cultivos de cana-de-açúcar, milho e soja na área de estudo. Tem-se como resultado a composição granulométrica do sedimento dividida em cinco frações que correspondem às frações argila, silte, areia muito fina, areia fina e areia grossa, respectivamente. Nas condições do estudo, a cultura da cana-de-açúcar mostrou-se a menos protecionista quando comparada com as culturas de milho e soja. Com a geração da componente clima para a cidade do experimento, têm-se dados mais confiáveis para a mensuração dos impactos causados pelo manejo na perda de solos da área do estudo. O modelo WEPP foi eficiente na geração dos valores de erosão líquida para a área em estudo onde, na bacia, há a deposição de sedimentos

Soil erosion has been the subject of great concern worldwide due to major changes in the planet. These include climate change, and biodiversity loss on the planet, but little commented other changes, but no less important are the changes in nitrogen and phosphorus cycles. Part of this study shows that the carrying of sediments generated by erosion can be the villain of eutrofizações bodies of water. This work was carried out in an area located in the municipality of Tabapuã, northwest of São Paulo, whose geographical coordinates are: Latitude 21 05 '57 S and Longitude 49 01' 02 W. The main objective of this study was to estimate the erosion with the WEPP model in acreage of Tabapuã (SP), and with the following specific objectives: 1) to adjust the model for use in tropical climates like Brazil's climate; 2) apply the model to measure scenarios of possible impacts caused by water erosion for cane sugar crops, corn and soybeans in the study area. There has resulted in the particle size composition of the sediment divided into five fractions corresponding fractions clay, silt, very fine sand, fine sand and sand respectively. Under the conditions of the study the culture of cane sugar was shown to be less protectionist when compared to corn and soybeans. With the generation of climate component to the city of the experiment have been more reliable data to measure the impacts of management in the loss of the study area soils. The WEPP model was efficient in the generation of net erosion values for the studied area in the basin where there is a deposition of sediments

Pós-graduação em Agronomia (Ciência do Solo) - FCAV

Country
Brazil
Keywords

Solos - Erosão, Erosion, Erosão, Impacto ambiental, Sedimentos (Geologia), Microbacias Hidrográficas

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    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green
Related to Research communities
Italian National Biodiversity Future Center