Shadow analysis: A method for measuring soil surface roughness

García Moreno, Rosario; Saa Requejo, Antonio; Tarquis Alfonso, Ana Maria; Barrington, S. y Diaz Alvarez, Maria Cruz (2008). Shadow analysis: A method for measuring soil surface roughness. "Geoderma", v. 146 (n. 1-2); pp. 201-208. ISSN 0016-7061. https://doi.org/10.1016/j.geoderma.2008.05.026.

Descripción

Título: Shadow analysis: A method for measuring soil surface roughness
Autor/es:
  • García Moreno, Rosario
  • Saa Requejo, Antonio
  • Tarquis Alfonso, Ana Maria
  • Barrington, S.
  • Diaz Alvarez, Maria Cruz
Tipo de Documento: Artículo
Título de Revista/Publicación: Geoderma
Fecha: Julio 2008
Volumen: 146
Materias:
Palabras Clave Informales: Micro-relief, Soil surface roughness, Pin meter, Ro0ughness indexes, Image analysis.
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Edafología [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Erosion potential and the effects of tillage can be evaluated from quantitative descriptions of soil surface roughness. The present study therefore aimed to fill the need for a reliable, low-cost and convenient method to measure that parameter. Based on the interpretation of micro-topographic shadows, this new procedure is primarily designed for use in the field after tillage. The principle underlying shadow analysis is the direct relationship between soil surface roughness and the shadows cast by soil structures under fixed sunlight conditions. The results obtained with this method were compared to the statistical indexes used to interpret field readings recorded by a pin meter. The tests were conducted on 4-m2 sandy loam and sandy clay loam plots divided into 1-m2 subplots tilled with three different tools: chisel, tiller and roller. The highly significant correlation between the statistical indexes and shadow analysis results obtained in the laboratory as well as in the field for all the soil–tool combinations proved that both variability (CV) and dispersion (SD) are accommodated by the new method. This procedure simplifies the interpretation of soil surface roughness and shortens the time involved in field operations by a factor ranging from 12 to 20.

Más información

ID de Registro: 2981
Identificador DC: http://oa.upm.es/2981/
Identificador OAI: oai:oa.upm.es:2981
Identificador DOI: 10.1016/j.geoderma.2008.05.026
URL Oficial: http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235807%232008%23998539998%23695231%23FLA%23&_cdi=5807&_pubType=J&_auth=y&_acct=C000047350&_version=1&_urlVersion=0&_userid=885385&md5=05dc898e38a5cd32828855c9723800a4
Depositado por: Memoria Investigacion
Depositado el: 03 May 2010 10:09
Ultima Modificación: 20 Abr 2016 12:35
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