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| Titel |
Soil heat flux density measurements to evaluate soil conservation practices in semiarid conditions |
| VerfasserIn |
Rosario García Moreno, Ruben Moratiel Yugueros, María Cruz Díaz Álvarez, Francisca Guerrero |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250046272
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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 determines the potential for future
production of soil. In the case of bare and protected soils the balance is quite different
because of the pattern of surface energy flux. This behaviour is conditioned by
the erosion condition of the soil. In order to evaluate the relation between erosion
conditions and soil energy, the authors monitored from fall to spring two different
types of bared soils. One of the experimental sites was characterized for being a
cereal cropping soil left resting during fall and winter. The other experimental site
was chosen in the area of transit of the tractors near the first site. Soil heat flux
density was measured with a heat flux plate sensor buried at a depth of 0.05 m
in both experimental sites. The change in heat storage in the soil layer above the
heat flux plates was measured by inserting metallic sensors at an angle from near
the bottom to near the top of the soil layer (roughly about 4 to 1 cm below the
soil surface).The parameter chosen to evaluate the relation of the soil energy to
potential erosion process was soil surface roughness. This indicator was measured once
per week. Also some evaluations of the biological activity of the soils served to
complement the parameters. The results indicated that the losses in the energy in
the soil surface are greater when the roughness decreases and the compaction is
increased. |
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