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| Titel |
Comparing soil surface roughness patterns at different colour and organic matter conditions using shadow analysis method |
| VerfasserIn |
R. García Moreno, M. C. Díaz Alvarez, Antonio Saa Requejo, F. Guerrero López |
| 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 |
250060261
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| Zusammenfassung |
| The method based on the shadow analysis has shown to be one of the most convenient
techniques to characterize SSR in the field when used in arid and semi-arid regions. However,
the technique has not been proved with soils having more than 3% of organic matter and soil
with very dark colours. In order to proof that the technique is able to function at field trials
with soils richer in organic matter and with different colours, the project compared SSR
resulting in 5 different types of soils after passing chisel. The main variation amongst the
soils was the colour, brown soils, grey pale soils and yellow soils and the organic matter
associated, 1 to 6%. All the plots measured 1m2 and were used for crop production. For each
site 6 plots were considered and all the data was captured during summer time to avoid the
influence of rain.
The SSR obtained varied from 44 to 62% showing that the results were not significantly
related to the darkness of colour and the content of organic matter. The variations were
strongly related to the amount of clay found on different soils. This difference could be
introduced by the difficulty in some cases to pass the chisel when soil is too dried since the
acquisition of field data was done after chisel tool was passed on different sites. The
parameters demonstrated that the method can be used to study the influence of wind and
water erosion on soil surface at field conditions with independence of colour and organic
matter properties. |
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