Regionalized soil roughness indices
The soil roughness at the field level is an easy visually perceptible notion, but difficult to describe numerically. The objective of this paper is to propose a method to establish quantitative and descriptive soil roughness indices. A measurement system was developed using a laptop-computer and a laser cell. The elevation data are measured on the ground along a square array. They are treated with geostatistics methods. For a given direction, the semi-variogram shape, depending on the distance, is always comparable with ground relief, and reflects in a positive way the variations of this relief. New quantitative indices are proposed. They are derived from semi-variogram and they characterize the roughness in both vertical and horizontal planes. For the five plots the main results are : on crusted soil without soil tillage, the semi-variogram is nearly flat in isohypsic direction and has a parabolic shape in the slope direction. On an isohypsic bank the semi-variogram presents a shape with a hole effect upright to the bank. For an oriented knife soil tillage, the semi-variogram is bimodal, with a hollow effect in the axis perpendicular to the vine-rows. With a not clearly oriented soil tillage, the semi-variograms in all directions have a practically similar feature with a sill. The semi-variogram corresponding to the direction transversal to a gutter has a bell-slope.
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Subjects: | P33 - Chimie et physique du sol, trait morphologique du sol, type de sol, technique analytique, http://aims.fao.org/aos/agrovoc/c_7179, http://aims.fao.org/aos/agrovoc/c_7204, http://aims.fao.org/aos/agrovoc/c_1513, |
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dig-cirad-fr-3903572024-01-27T23:21:42Z http://agritrop.cirad.fr/390357/ http://agritrop.cirad.fr/390357/ Regionalized soil roughness indices. Guillobez Serge, Arnaud Michel. 1998. Soil and Tillage Research, 45 : 419-432.https://doi.org/10.1016/S0933-3630(97)00031-7 <https://doi.org/10.1016/S0933-3630(97)00031-7> Regionalized soil roughness indices Guillobez, Serge Arnaud, Michel eng 1998 Soil and Tillage Research P33 - Chimie et physique du sol trait morphologique du sol type de sol technique analytique http://aims.fao.org/aos/agrovoc/c_7179 http://aims.fao.org/aos/agrovoc/c_7204 http://aims.fao.org/aos/agrovoc/c_1513 The soil roughness at the field level is an easy visually perceptible notion, but difficult to describe numerically. The objective of this paper is to propose a method to establish quantitative and descriptive soil roughness indices. A measurement system was developed using a laptop-computer and a laser cell. The elevation data are measured on the ground along a square array. They are treated with geostatistics methods. For a given direction, the semi-variogram shape, depending on the distance, is always comparable with ground relief, and reflects in a positive way the variations of this relief. New quantitative indices are proposed. They are derived from semi-variogram and they characterize the roughness in both vertical and horizontal planes. For the five plots the main results are : on crusted soil without soil tillage, the semi-variogram is nearly flat in isohypsic direction and has a parabolic shape in the slope direction. On an isohypsic bank the semi-variogram presents a shape with a hole effect upright to the bank. For an oriented knife soil tillage, the semi-variogram is bimodal, with a hollow effect in the axis perpendicular to the vine-rows. With a not clearly oriented soil tillage, the semi-variograms in all directions have a practically similar feature with a sill. The semi-variogram corresponding to the direction transversal to a gutter has a bell-slope. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/390357/1/390357.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1016/S0933-3630(97)00031-7 10.1016/S0933-3630(97)00031-7 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=90132 info:eu-repo/semantics/altIdentifier/doi/10.1016/S0933-3630(97)00031-7 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1016/S0933-3630(97)00031-7 |
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P33 - Chimie et physique du sol trait morphologique du sol type de sol technique analytique http://aims.fao.org/aos/agrovoc/c_7179 http://aims.fao.org/aos/agrovoc/c_7204 http://aims.fao.org/aos/agrovoc/c_1513 P33 - Chimie et physique du sol trait morphologique du sol type de sol technique analytique http://aims.fao.org/aos/agrovoc/c_7179 http://aims.fao.org/aos/agrovoc/c_7204 http://aims.fao.org/aos/agrovoc/c_1513 |
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P33 - Chimie et physique du sol trait morphologique du sol type de sol technique analytique http://aims.fao.org/aos/agrovoc/c_7179 http://aims.fao.org/aos/agrovoc/c_7204 http://aims.fao.org/aos/agrovoc/c_1513 P33 - Chimie et physique du sol trait morphologique du sol type de sol technique analytique http://aims.fao.org/aos/agrovoc/c_7179 http://aims.fao.org/aos/agrovoc/c_7204 http://aims.fao.org/aos/agrovoc/c_1513 Guillobez, Serge Arnaud, Michel Regionalized soil roughness indices |
description |
The soil roughness at the field level is an easy visually perceptible notion, but difficult to describe numerically. The objective of this paper is to propose a method to establish quantitative and descriptive soil roughness indices. A measurement system was developed using a laptop-computer and a laser cell. The elevation data are measured on the ground along a square array. They are treated with geostatistics methods. For a given direction, the semi-variogram shape, depending on the distance, is always comparable with ground relief, and reflects in a positive way the variations of this relief. New quantitative indices are proposed. They are derived from semi-variogram and they characterize the roughness in both vertical and horizontal planes. For the five plots the main results are : on crusted soil without soil tillage, the semi-variogram is nearly flat in isohypsic direction and has a parabolic shape in the slope direction. On an isohypsic bank the semi-variogram presents a shape with a hole effect upright to the bank. For an oriented knife soil tillage, the semi-variogram is bimodal, with a hollow effect in the axis perpendicular to the vine-rows. With a not clearly oriented soil tillage, the semi-variograms in all directions have a practically similar feature with a sill. The semi-variogram corresponding to the direction transversal to a gutter has a bell-slope. |
format |
article |
topic_facet |
P33 - Chimie et physique du sol trait morphologique du sol type de sol technique analytique http://aims.fao.org/aos/agrovoc/c_7179 http://aims.fao.org/aos/agrovoc/c_7204 http://aims.fao.org/aos/agrovoc/c_1513 |
author |
Guillobez, Serge Arnaud, Michel |
author_facet |
Guillobez, Serge Arnaud, Michel |
author_sort |
Guillobez, Serge |
title |
Regionalized soil roughness indices |
title_short |
Regionalized soil roughness indices |
title_full |
Regionalized soil roughness indices |
title_fullStr |
Regionalized soil roughness indices |
title_full_unstemmed |
Regionalized soil roughness indices |
title_sort |
regionalized soil roughness indices |
url |
http://agritrop.cirad.fr/390357/ http://agritrop.cirad.fr/390357/1/390357.pdf |
work_keys_str_mv |
AT guillobezserge regionalizedsoilroughnessindices AT arnaudmichel regionalizedsoilroughnessindices |
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1792491342392197120 |