Aplicación de diferentes métodos para evaluar la erosionabilidad en suelos deforestados de ladera

  1. J. Santiago 1
  2. M. Varela 1
  3. E. de Blas 1
  4. I. López 1
  5. E. Benito 1
  1. 1 Universidade de Vigo. Departamento de Bioloxía Vexetal e Ciencia do Solo
Libro:
Actas del Congreso de Ordenación y Gestión Sostenible de Montes : (Santiago de Compostela, 4-9 de octubre de 1999)
  1. Alberto Rojo Alboreca (coord.)
  2. Ignacio Javier Díaz-Maroto Hidalgo (coord.)
  3. Juan Gabriel Alvarez González (coord.)
  4. Marcos Barrio Anta (coord.)
  5. Fernando Castedo Dorado (coord.)
  6. Guillermo Riesco Muñoz (coord.)
  7. Antonio Rigueiro Rodríguez (coord.)

Editorial: Consellería de Medio Ambiente, Territorio e Vivenda ; Junta de Galicia = Xunta de Galicia

ISBN: 84-931244-2-7,  84-931244-4-3

Ano de publicación: 2000

Volume: 2

Páxinas: 171-180

Congreso: Congreso de Ordenación y Gestión Sostenible de Montes : (Santiago de Compostela, 4-9 de octubre de 1999) (1. 1999. Santiago de Compostela)

Tipo: Achega congreso

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Resumo

Human activities, such as deforestation, which involve the alteration or the elimination of the soil cover have a great impact on the soil, making it more susceptible to water erosion. The area of study, located in a place with steep slopes, has recently been subjected to a massive deforestation and to different transformation activities with the use of heavy machinery. Within this area we selected different zones according to the condition of the vegetation and to the different soil management practices carried out there. The erodibility has been estimated by using a rainfall simulator, and by applying some indices calculated according to the inherent characteristics of the soil. The results obtained show that the erodibility of the soils under study is very low. Among all the indices used only the modified K-factor (DISSMEYER & FOSTER, 1984), and the aggregates stability test seem to reflect the increase in the erodibility due to the effect of soil management. The application of simulated rainfall clearly shows the impact that deforestation and the different soil management practices performed on the soils of the hillside, have on the sediment yield, confirming the favorable effect that the vegetable cover has on the decrease in the surface runoff and the soil loss.

Fonte de datos: Dialnet