SciELO - Scientific Electronic Library Online

 
vol.20 issue1Light habitat, structure, diversity and dynamic of the tropical dry forest 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


Colombia Forestal

Print version ISSN 0120-0739

Abstract

CAMACHO-TAMAYO, Jesús H.; FORERO-CABRERA, Nathalia M.; RAMIREZ-LOPEZ, Leonardo  and  RUBIANO, Yolanda. Near-infrared spectroscopic assessment of soil texture in an oxisol of the eastern plains of Colombia. Colomb. for. [online]. 2017, vol.20, n.1, pp.5-18. ISSN 0120-0739.  https://doi.org/10.14483/udistrital.jour.colomb.for.2017.1.a01.

Techniques such as near infrared spectroscopy (NIR) can be used to identify classes and properties of soils with good precision. The aim of this study was to calibrate models to predict the content of clay, silt and sand of a Typic Hapludox by NIR spectroscopy. The study was carried out in the Carimagua Experimental Station located in the municipality of Puerto Gaitán, Meta, Colombia. A grid design was used, 1200 samples were collected in an area of 5100 ha. The development of the models made by partial least squares regression. A low representatively models were obtained for sand and silt contents, with values of R2 (0.41 and 0.34, respectively).The model clay content showed a high R2 (0.76). For the clay was possible the development of digital maps and digital spectrum maps similar. The results for the clay content indicate that laboratory analyses can be substituted, in large part, by spectral models. In the case of sand and silt, it would be convenient to improve the model so that, in the future, laboratory analyses can be substituted, for this soil class.

Keywords : soil mapping; diffuse reflectance; Typic Hapludox.

        · 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