Fecha/hora: 03/06/2024 14:34:36

Biblioteca(s): | INIA La Estanzuela.
Tipo de la producción científica: | Artículos en Revistas Indexadas Internacionales
Circulación/Nivel: | Internacional - --
Fecha corriente: | 30/08/2017
Fecha de la última actualización: | 08/09/2022
Autoria: | CARRASCO-LETELIER, L.; BERETTA, A.
Afiliación: | LEONIDAS CARRASCO-LETELIER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANDRES NICOLAS BERETTA BLANCO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.
Título: | Soil erosion by water estimated for 99 Uruguayan basins.
Año de publicación: | 2017
Fuente/Imprenta: | Ciencia e Investigación Agraria, v.44, n.2, p.184-194. 2017
DOI: | 10.7764/rcia.v44i2.1717
Idioma: | Inglés
Notas: | Article history: Received June 13, 2016.// Accepted May 09, 2017.

Contenido:

Abstract:
. Soil erosion can be accelerated by agricultural intensification, and the soil loss can alter the quality of water bodies. Sustainable agricultural production therefore requires the management of erosion and potential water pollution. In Uruguay, where there is heavy use of soil for agriculture, there is a need to continually develop and update erosion management policies. In this framework, we estimated the erosion in 99 drainage basins by analyzing and managing the information required (K, L, S, C and R-factors) in the universal soil loss equation (USLE) and the revised universal soil loss equation (RUSLE) in a geographical information system (GIS). The studied drainage basins encompass 73% of the area of Uruguay. The results include the following values: the K-factor range from 0.0073 to 0.088 (t ha h)(ha MJ mm)-1, the R-factor range from 3,547 to 9,342 (MJ mm)(ha h yr)-1, the C-factor range from 0 to 0.155, the slope gradients are less than 4.3% in 78% of the soils, and the multiplicative products of L and S are less than 0.73 in 75% of the cases. The drainage basin characteristics allowed the identification of 4 homogeneous regions based on their erosion behavior. The northern-western-southern basins cluster and Sierras del Este basins clusters indicate the possibility of managing their erosion through control of vegetation cover, which is represented by the C-factor. In general, this forecast of soil erosion by water (92.9% of the soil polygons and 99.9% of the drainage basins) indicates a mean soil loss of less than 7 t (ha yr)-1 corresponding to the land cover surveyed in 2011

Palabras-Clave: | EROSION; GIS; RUSLE; USLE; WATERSHEDS.
Thesagro: | EROSIÓN; URUGUAY.
Categoría del tema: | P36 Erosión  conservación y recuperación del suelo
URL: | http://www.ainfo.inia.uy/digital/bitstream/item/7236/1/2017-Carrasco-Letelier-Beretta-Blanco-RCIA-44-2.pdf
Registro original: | INIA La Estanzuela (LE)
Ejemplares: | LE - (102187-1) - PXI - AP - DD - PP/Ciencia e Investigación Agraria/2017 -  -  - DIS