SciELO - Scientific Electronic Library Online

 
vol.29 issue3Water safety plans. Fundamentals and prospects for implementing them in ColombiaBiosignal data preprocessing: a voice pathology detection application author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


Ingeniería e Investigación

Print version ISSN 0120-5609

Abstract

ALVAREZ-HERRERA, Javier Giovanni  and  FERNANDEZ RODRIGUEZ, Juan Pablo. Evaluating erosion in an Inceptisol (soil) in Tunja (Boyacá department, Colombia) having different coverage regarding the impact of simulated rainfall. Ing. Investig. [online]. 2009, vol.29, n.3, pp.86-91. ISSN 0120-5609.

The area surrounding the city of Tunja in the Boyacá department has a heterogeneous climate and adverse conditions facilitating erosion. Scarce vegetation cover does little to reduce the impact of the rain and increases runoff. This study was aimed at analysing different types of rainfall coverage, intensity and duration by simulation. A experimental 3x3 Latin square design was used, with 3 rainfall intensities (10, 20 and 30 mm•h-1), 3 rainfall durations (1, 2 and 3 hours) and 3 types of soil coverage (kikuyo, natural coverage, bare). Each Latin square had 3 repetitions, giving a total of 27 experimental units. Significant differences were found between rainfall intensities evaluated; 30 mm•h-1 rainfall intensity generated 2,218.6 kg•ha-1 of soil loss caused by run-off. Kikuyo coverage was the vegetal cover presenting the least soil loss and greatest infiltration (1,019.1 kg•ha-1 soil loss by run-off and 0.88 cm accumulated infiltration). Rainfall duration did not affect soil loss due to run-off and infiltration. Tunja’s annual rainfall pattern showed that 2006 presented the greatest soil loss (46,663 kg•ha-1 for bare soil). This meant that corrective action must be taken quickly by implementing vegetal cover to mitigate the effects of rainfall on exposed soil to reduce the loss of such valuable resource.

Keywords : soil loss; simulator; rainfall; runoff; infiltration.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License