The effects of afforestation on Uruguay's water resources
The development of industrial afforestation in Uruguay leaded to the substitution of natural grasslands mainly used for cattle grazing by Eucalyptus and Pinus plantations. This land use modification caused concern regarding its effects on the country’s natural resources, particularly water and soils. Therefore, research studies were undertaken in order to find hydro-environmental indicators of sustainable forest management. This paper shows the progress and current state of knowledge regarding the effects of afforestation on Uruguay’s water resources, based on investigations carried out by the University Net on Agricultural Engineering. The paper describes studies in a macro-basin of 2.097 km2 , with a forestry surface of about 540 km2 and two experimental micro-basins with different land cover, located in the same region, under similar hydrological conditions. Available results allows to quantify trends related to: 1) the effects on hydrographs (runoff volumes and maximum peaks); 2) the effect of the Eucalyptus and Pinus plantations on the macro-basin’s runoff, distinguishing between annual and seasonal behavior, for the period before afforestation (1975-1993), where the cattle use prevailed, and the period after afforestation (1994-2002); 3) the amount of direct rainfall and stemflow, two of the three components of rainfall redistribution in forests; 4) the relationship between soil humidity and field capacity.
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Coeditada entre Facultad de Agronomía - Udelar y el Instituto Nacional de Investigación Agropecuaria (INIA)
2006
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oai:oai.agrocienciauruguay.uy:article-9312022-02-09T22:46:49Z The effects of afforestation on Uruguay's water resources Efecto de las plantaciones forestales sobre el recurso agua en el Uruguay Silveira, L. Alonso, J. Martínez, L. Eucalyptus Pinus grasslands runoff sustainable management Eucalyptus Pinus tapiz herbáceo escorrentía sustentabilidad The development of industrial afforestation in Uruguay leaded to the substitution of natural grasslands mainly used for cattle grazing by Eucalyptus and Pinus plantations. This land use modification caused concern regarding its effects on the country’s natural resources, particularly water and soils. Therefore, research studies were undertaken in order to find hydro-environmental indicators of sustainable forest management. This paper shows the progress and current state of knowledge regarding the effects of afforestation on Uruguay’s water resources, based on investigations carried out by the University Net on Agricultural Engineering. The paper describes studies in a macro-basin of 2.097 km2 , with a forestry surface of about 540 km2 and two experimental micro-basins with different land cover, located in the same region, under similar hydrological conditions. Available results allows to quantify trends related to: 1) the effects on hydrographs (runoff volumes and maximum peaks); 2) the effect of the Eucalyptus and Pinus plantations on the macro-basin’s runoff, distinguishing between annual and seasonal behavior, for the period before afforestation (1975-1993), where the cattle use prevailed, and the period after afforestation (1994-2002); 3) the amount of direct rainfall and stemflow, two of the three components of rainfall redistribution in forests; 4) the relationship between soil humidity and field capacity. El desarrollo de la forestación industrial en el Uruguay, sustituyendo tierras de pastoreo para uso ganadero por plantaciones de Eucalyptus y Pinus, ha causado preocupación respecto a sus efectos sobre los recursos naturales, particularmente aguas y suelos. En ese contexto se emprenden estudios de investigación con el propósito de obtener indicadores de manejo forestal sustentable. Este trabajo presenta los avances en el conocimiento de los efectos de la forestación sobre el recurso hídrico en el Uruguay, en base a los resultados obtenidos hasta el presente en proyectos de investigación de la Red Temática de Ingeniería Agrícola de la Universidad de la República. Se describen los estudios realizados en una macrocuenca de 2.097 km2 , con una superficie forestada de 540 km2 y en dos microcuencas experimentales, la primera forestada con Eucalyptus y la testigo con tapiz herbáceo para uso ganadero, ubicadas en la misma región, bajo condiciones hidrológicas similares. Los resultados disponibles permiten cuantificar tendencias en cuanto al: 1) efecto de las plantaciones sobre hidrogramas de tormentas (volúmenes escurridos y caudales máximos); 2) efecto de las plantaciones de Eucalyptus y Pinus sobre la escorrentía en macrocuencas, distinguiendo entre comportamiento anual y estacional, en el período preforestación (1975-1993), y el período posforestación (1994-2002); 3) precipitación directa y fustal, dos de las tres componentes en que se distribuye la lluvia en una plantación forestal; 4) relación entre humedad del suelo y capacidad de campo. Coeditada entre Facultad de Agronomía - Udelar y el Instituto Nacional de Investigación Agropecuaria (INIA) 2006-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://agrocienciauruguay.uy/index.php/agrociencia/article/view/931 10.31285/AGRO.10.931 Agrociencia Uruguay; Vol. 10 No. 2 (2006); 75- 93 Agrociencia Uruguay; Vol. 10 Núm. 2 (2006); 75- 93 Agrociencia Uruguay; v. 10 n. 2 (2006); 75- 93 2730-5066 spa https://agrocienciauruguay.uy/index.php/agrociencia/article/view/931/991 Copyright (c) 2006 Agrociencia Uruguay |
| institution |
UDELAR |
| collection |
OJS |
| country |
Uruguay |
| countrycode |
UY |
| component |
Revista |
| access |
En linea |
| databasecode |
rev-agrociencia-uy |
| tag |
revista |
| region |
America del Sur |
| libraryname |
Biblioteca de la Facultad de Agronomía de la UDELAR de UY |
| language |
spa |
| format |
Digital |
| author |
Silveira, L. Alonso, J. Martínez, L. |
| spellingShingle |
Silveira, L. Alonso, J. Martínez, L. The effects of afforestation on Uruguay's water resources |
| author_facet |
Silveira, L. Alonso, J. Martínez, L. |
| author_sort |
Silveira, L. |
| title |
The effects of afforestation on Uruguay's water resources |
| title_short |
The effects of afforestation on Uruguay's water resources |
| title_full |
The effects of afforestation on Uruguay's water resources |
| title_fullStr |
The effects of afforestation on Uruguay's water resources |
| title_full_unstemmed |
The effects of afforestation on Uruguay's water resources |
| title_sort |
effects of afforestation on uruguay's water resources |
| description |
The development of industrial afforestation in Uruguay leaded to the substitution of natural grasslands mainly used for cattle grazing by Eucalyptus and Pinus plantations. This land use modification caused concern regarding its effects on the country’s natural resources, particularly water and soils. Therefore, research studies were undertaken in order to find hydro-environmental indicators of sustainable forest management. This paper shows the progress and current state of knowledge regarding the effects of afforestation on Uruguay’s water resources, based on investigations carried out by the University Net on Agricultural Engineering. The paper describes studies in a macro-basin of 2.097 km2 , with a forestry surface of about 540 km2 and two experimental micro-basins with different land cover, located in the same region, under similar hydrological conditions. Available results allows to quantify trends related to: 1) the effects on hydrographs (runoff volumes and maximum peaks); 2) the effect of the Eucalyptus and Pinus plantations on the macro-basin’s runoff, distinguishing between annual and seasonal behavior, for the period before afforestation (1975-1993), where the cattle use prevailed, and the period after afforestation (1994-2002); 3) the amount of direct rainfall and stemflow, two of the three components of rainfall redistribution in forests; 4) the relationship between soil humidity and field capacity. |
| publisher |
Coeditada entre Facultad de Agronomía - Udelar y el Instituto Nacional de Investigación Agropecuaria (INIA) |
| publishDate |
2006 |
| url |
https://agrocienciauruguay.uy/index.php/agrociencia/article/view/931 |
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