EFFECT OF SOIL MANAGEMENT ON THEIR THERMAL PROPERTIES

In order to determine the effect of soil management on its thermal properties, undisturbed soil samples were taken from two tillage treatments (conventional and conservation treatment) at two depths (0-30cm and 30-60cm) of a Stagnic Luvisol (silt loam) before and after directly wheeling. The experim...

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Autores principales:	Dec,Dorota, Dörner,José, Horn,Rainer
Lenguaje:	English
Publicado:	Sociedad Chilena de la Ciencia del Suelo 2009
Materias:	heat capacity heat conductivity thermal diffusivity tillage system
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000100003
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spelling	oai:scielo:S0718-279120090001000032009-06-26EFFECT OF SOIL MANAGEMENT ON THEIR THERMAL PROPERTIESDec,DorotaDörner,JoséHorn,Rainer heat capacity heat conductivity thermal diffusivity tillage system In order to determine the effect of soil management on its thermal properties, undisturbed soil samples were taken from two tillage treatments (conventional and conservation treatment) at two depths (0-30cm and 30-60cm) of a Stagnic Luvisol (silt loam) before and after directly wheeling. The experimental field, located in Harste/Goettingen, Germany, was cultivated with sugar beet (Beta vulgaris). To calculate thermal properties of the soil, the volumetric water content (TDR needles) and temperature (pT 100 thermistors) during the simulation of the daily fluctuation of temperature were registered in laboratory and then the thermal conductivity, volumetric heat capacity and heat diffusivity were calculated following the damping depth method and the statistical-physical model. The results showed that different tillage systems as well as compaction influenced soil thermal properties. Conservational tillage treatment with more stable and better developed soil structure at a depth of 0-30cm (which represents ploughing depth and decides differences between soil management) presented higher water content as the main factor deciding soil thermal properties. According to this, values of thermal conductivity and volumetric heat capacity under this treatment were greater than under conventional. Thermal diffusivity, however, was lower. From the latter we can conclude that under conservation tillage treatment the soil can store more heat, but at the same time and as a result of the lower thermal diffusivity, the atmospheric variations do not affect the soil thermal regime strongly.info:eu-repo/semantics/openAccessSociedad Chilena de la Ciencia del SueloRevista de la ciencia del suelo y nutrición vegetal v.9 n.1 20092009-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000100003en10.4067/S0718-27912009000100003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	heat capacity heat conductivity thermal diffusivity tillage system
spellingShingle	heat capacity heat conductivity thermal diffusivity tillage system Dec,Dorota Dörner,José Horn,Rainer EFFECT OF SOIL MANAGEMENT ON THEIR THERMAL PROPERTIES
description	In order to determine the effect of soil management on its thermal properties, undisturbed soil samples were taken from two tillage treatments (conventional and conservation treatment) at two depths (0-30cm and 30-60cm) of a Stagnic Luvisol (silt loam) before and after directly wheeling. The experimental field, located in Harste/Goettingen, Germany, was cultivated with sugar beet (Beta vulgaris). To calculate thermal properties of the soil, the volumetric water content (TDR needles) and temperature (pT 100 thermistors) during the simulation of the daily fluctuation of temperature were registered in laboratory and then the thermal conductivity, volumetric heat capacity and heat diffusivity were calculated following the damping depth method and the statistical-physical model. The results showed that different tillage systems as well as compaction influenced soil thermal properties. Conservational tillage treatment with more stable and better developed soil structure at a depth of 0-30cm (which represents ploughing depth and decides differences between soil management) presented higher water content as the main factor deciding soil thermal properties. According to this, values of thermal conductivity and volumetric heat capacity under this treatment were greater than under conventional. Thermal diffusivity, however, was lower. From the latter we can conclude that under conservation tillage treatment the soil can store more heat, but at the same time and as a result of the lower thermal diffusivity, the atmospheric variations do not affect the soil thermal regime strongly.
author	Dec,Dorota Dörner,José Horn,Rainer
author_facet	Dec,Dorota Dörner,José Horn,Rainer
author_sort	Dec,Dorota
title	EFFECT OF SOIL MANAGEMENT ON THEIR THERMAL PROPERTIES
title_short	EFFECT OF SOIL MANAGEMENT ON THEIR THERMAL PROPERTIES
title_full	EFFECT OF SOIL MANAGEMENT ON THEIR THERMAL PROPERTIES
title_fullStr	EFFECT OF SOIL MANAGEMENT ON THEIR THERMAL PROPERTIES
title_full_unstemmed	EFFECT OF SOIL MANAGEMENT ON THEIR THERMAL PROPERTIES
title_sort	effect of soil management on their thermal properties
publisher	Sociedad Chilena de la Ciencia del Suelo
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000100003
work_keys_str_mv	AT decdorota effectofsoilmanagementontheirthermalproperties AT dornerjose effectofsoilmanagementontheirthermalproperties AT hornrainer effectofsoilmanagementontheirthermalproperties
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EFFECT OF SOIL MANAGEMENT ON THEIR THERMAL PROPERTIES

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