Impacts of Agricultural Expansion on Surface Runoff: A Case Study of a River Basin in the Brazilian Legal Amazon

dc.contributor.author Maeda, E.
dc.contributor.author Formaggio, A.
dc.contributor.author Kaleita, Amy
dc.contributor.author Shimabukuro, Y.
dc.contributor.author Kaleita, Amy
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-14T12:23:07.000
dc.date.accessioned 2020-06-29T22:40:38Z
dc.date.available 2020-06-29T22:40:38Z
dc.date.copyright Thu Jan 01 00:00:00 UTC 2009
dc.date.embargo 2014-09-05
dc.date.issued 2009-09-01
dc.description.abstract <p>This work presents an analysis of the Land Use and Land Cover (LULC) changes of a region in the Brazilian Legal Amazon, and an evaluation of their impacts on the surface runoff regime. This case study took place at the Suiá-Miçu River basin, located in the northeast region of Mato Grosso State. LULC maps were produced for the years 1973, 1984 and 2005 using remote sensing data. After analyzing the agricultural expansion in the study area, the Automated Geospatial Watershed Assessment Tool (AGWA) was applied in performing the surface runoff modeling for each of the analyzed years using the SCS curve number method. The results showed that by 1984, 13% of the natural vegetation had been replaced by pasture in this drainage basin. These changes were responsible for a 5.7% increase in the annual average surface runoff volume when compared with the baseline values of 1973. In 2005, the agricultural areas increased to around 40% of the drainage basin, being 28% occupied by pasture and 12% by crop fields. In this last scenario, the annual average surface runoff was 37% higher than in 1973.</p>
dc.description.comments <p>This article is from <em>International Journal of Geoinformatics</em> 5 (2009): L.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_pubs/534/
dc.identifier.articleid 1817
dc.identifier.contextkey 6082871
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/534
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1311
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_pubs/534/2009_Maeda_ImpactsAgricultural.pdf|||Sat Jan 15 00:51:26 UTC 2022
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.disciplines Geographic Information Sciences
dc.subject.disciplines Water Resource Management
dc.title Impacts of Agricultural Expansion on Surface Runoff: A Case Study of a River Basin in the Brazilian Legal Amazon
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 8a405b08-e1c8-4a10-b458-2f5a82fcf148
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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