Shadow Analysis of Soil Surface Roughness Compared to the Chain Set Method and Direct Measurement of Micro-relief.

Tarquis Alfonso, Ana Maria and Diaz Alvarez, Maria Cruz and Saa Requejo, Antonio and García Moreno, Rosario and Paz González, Antonio (2010). Shadow Analysis of Soil Surface Roughness Compared to the Chain Set Method and Direct Measurement of Micro-relief.. "Biogeosciences", v. 7 (n. 8); pp. 2477-2487. ISSN 1726-4170.

Description

Title: Shadow Analysis of Soil Surface Roughness Compared to the Chain Set Method and Direct Measurement of Micro-relief.
Author/s:
  • Tarquis Alfonso, Ana Maria
  • Diaz Alvarez, Maria Cruz
  • Saa Requejo, Antonio
  • García Moreno, Rosario
  • Paz González, Antonio
Item Type: Article
Título de Revista/Publicación: Biogeosciences
Date: August 2010
Volume: 7
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Matemática Aplicada a la Ingeniería Agronómica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

More information

Item ID: 15464
DC Identifier: http://oa.upm.es/15464/
OAI Identifier: oai:oa.upm.es:15464
Official URL: http://www.biogeosciences.net/7/issue8.html
Deposited by: Memoria Investigacion
Deposited on: 28 May 2013 12:03
Last Modified: 21 Apr 2016 15:32
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