Advanced Search
MyIDEAS: Login

Olive Cultivation, its Impact on Soil Erosion and its Progression into Yield Impacts in Southern Spain in the Past as a Key to a Future of Increasing Climate Uncertainty

Contents:

Author Info

  • José A. Gómez

    ()
    (Institute for Sustainable Agriculture, CSIC, Alameda del Obispo s/n. Córdoba 14004, Spain)

  • Juan Infante-Amate

    (Agroecosystems History Laboratory, Pablo de Olavide University, Carretera de Utrera, km 1, Sevilla 41013, Spain)

  • Manuel González de Molina

    ()
    (Agroecosystems History Laboratory, Pablo de Olavide University, Carretera de Utrera, km 1, Sevilla 41013, Spain)

  • Tom Vanwalleghem

    ()
    (Department of Agronomy, University of Cordoba, Campus de Rabanales, Córdoba 14014, Spain)

  • Encarnación V. Taguas

    ()
    (Department of Rural Engineering, University of Cordoba, Campus Rabanales, Córdoba 14014, Spain)

  • Ignacio Lorite

    ()
    (IFAPA-Alameda del Obispo. Avda. Menenez Pidal s/n. Córdoba 14004, Spain)

Registered author(s):

    Abstract

    This article is intended as a review of the current situation regarding the impact of olive cultivation in Southern Spain (Andalusia) on soil degradation processes and its progression into yield impacts, due to diminishing soil profile depth and climate change in the sloping areas where it is usually cultivated. Finally, it explores the possible implications in the regional agricultural policy these results might have. It tries to show how the expansion and intensification of olive cultivation in Andalusia, especially since the late 18th century, had as a consequence an acceleration of erosion processes that can be identified by several indicators and techniques. Experimental and model analysis indicates that the rate of soil erosion accelerated since the expansion of mechanization in the late 1950s. In addition, that unsustainable erosion rates have prevailed in the region since the shift to a more intense olive cultivation systems by the end of the 17th Century. Although agroenvironmental measures implemented since the early 2000s have reduced erosion rates, they are still unsustainably high in a large fraction of the olive area in the region. In the case of olive orchards located in steeper areas with soils of lower water-holding capacity (due to coarse texture and stone content), cumulative erosion has already had a high impact on reducing their potential productivity. This is one of the factors that contributes towards increasing the gap between these less intensified orchards in the mountainous areas and those in the hilly areas with more gentle slopes, such as for instance the lower stretches of the Guadalquivir River Valley. In the case of olive orchards in the hilly areas with better soils, easier access to irrigation and lower production costs per unit, the efforts on soil conservation should be oriented towards limiting off-site damage, since the soil water-storage function of these soils may be preserved in the medium term even at the current soil erosion rates. The assessment made in this manuscript should be regarded as an initial approximation, since additional efforts in terms of increasing experimental records (for current or historical erosion) and of improving model analysis, with more comprehensive studies and more robust calibration and validation processes, are required.

    Download Info

    If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
    File URL: http://www.mdpi.com/2077-0472/4/2/170/pdf
    Download Restriction: no

    File URL: http://www.mdpi.com/2077-0472/4/2/170/
    Download Restriction: no

    Bibliographic Info

    Article provided by MDPI, Open Access Journal in its journal Agriculture.

    Volume (Year): 4 (2014)
    Issue (Month): 2 (June)
    Pages: 170-198

    as in new window
    Handle: RePEc:gam:jagris:v:4:y:2014:i:2:p:170-198:d:36999

    Contact details of provider:
    Web page: http://www.mdpi.com/

    Related research

    Keywords: olive; history; soil erosion; water balance; Southern Spain; yield; climate change;

    Find related papers by JEL classification:

    References

    No references listed on IDEAS
    You can help add them by filling out this form.

    Citations

    Lists

    This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

    Statistics

    Access and download statistics

    Corrections

    When requesting a correction, please mention this item's handle: RePEc:gam:jagris:v:4:y:2014:i:2:p:170-198:d:36999. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (XML Conversion Team).

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If references are entirely missing, you can add them using this form.

    If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.