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| Titel |
Evaluation of soil heat flux density as a function of soil management practices |
| VerfasserIn |
R. Moratiel Yugueros, R. García Moreno |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250060259
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| Zusammenfassung |
| Soil energy is an important parameter in order to understand the flux of energy between the
plant and the soil. This parameter could determine the potential for future production of soil.
Pattern of surface energy flux varies depending on several factors, mainly on coverage. Also,
this behaviour is strongly conditioned by the physical condition of soil. In order to evaluate
the trend and behaviour of soil energy depending on soil coverage the aim of the present
study was to evaluate soil heat flux density (G) in three different soil conditions depending on
seasonal weather temperatures. Therefore, the authors monitored soil energy every half
hour from soil located on bare soil, on soil covered by crops at root level and in
between crop rows. The selected crop was corn. Soil heat flux density was measured
with a heat flux plate sensor buried at a depth of 0.05 m in experimental sites. The
change in heat storage in the soil layer above the heat flux plates was measured by
inserting temperature sensors at an angle from near the bottom to near the top of the
soil layer (above the plate sensor). The results indicated that the soil energy flux
depends mainly on radiation and soil conditions. Although net radiation (Rn) was
the same for all the sites, the evolution for G is different. Greater G fluctuation is
produced in bared soils and decreases as soil is covered by the crops, especially at root
level. |
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