 |
| Titel |
Evaluation of soil organic carbon changes in forest soils from Mediterranean natural areas |
| VerfasserIn |
Maria Luisa Fernández-Romero, Luis Parras-Alcántara, Beatriz Lozano-García |
| Konferenz |
EGU General Assembly 2015
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250101264
|
| Publikation (Nr.) |
 EGU/EGU2015-376.pdf |
|
|
|
|
|
| Zusammenfassung |
| This study evaluated soil organic carbon (SOC), nitrogen (N), and the stratification ratio (SR)
of SOC in regosols of a toposequence (Summit, backslope and toeslope) in natural forest
areas located in a typical Mediterranean area of South Spain. Recent research has
demonstrated the importance of the relationship of soil properties with the different
topographical positions, as this can be of relevance for an efficient and effective management
of natural areas.
Total SOC was low in all the studied soils. Values were 69 g kg-1 (Summit), 65.1 g kg-1
(Backslope) and 49.2 g kg-1 (Toeslope). Consequently, these results show a pattern of
decrease from the highest (Summit) to the lowest topographical position (Toeslope). Also,
SOC decreased with depth in all topographical positions. The total SOC stock remained
evenly distributed in the three topographical positions.
N had a pattern of decrease with depth in all topographical positions. However, total N
was higher in the backslope than in the other two topographical positions. Nitrogen stock
followed the same pattern, with a higher value in the backslope than in the summit or in the
toeslope.
SR of SOC increased when deeper sections were taken into account at the backslope and
toeslope. However, the SR of SOC did not change significantly with depth in the summit. An
increase of this measure with depth has been associated with a higher SOC sequestration and
higher carbon stability by several authors.
Therefore, the results showed that soil quality was higher in lower topographical
positions. |
|
|
|
|
|
|