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| Titel |
Landscape scale assessment of soil and water salinization processes in agricultural coastal area. |
| VerfasserIn |
Aplena Elen Bless, Stéphane Follain, François Coiln, Armand Crabit |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250149109
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| Publikation (Nr.) |
 EGU/EGU2017-13429.pdf |
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| Zusammenfassung |
| Soil salinization is among main land degradation process around the globe. It reduces soil
quality, disturbs soil function, and has harmful impacts on plant growth that would threaten
agricultural sustainability, particularly in coastal areas where mostly susceptible on land
degradation because of pressure from anthropogenic activities and at the same time need to
preserve soil quality for supporting food production.
In this presentation, we present a landscape scale analysis aiming to assess salinization
process affecting wine production. This study was carried out at Serignan estuary delta in
South of France (Languadoc Roussillon Region, 43˚ 28’N and 3˚ 31’E). It is a
sedimentary basin near coastline of Mediterranean Sea. Field survey was design
to characterize both space and time variability of soil and water salinity through
water electrical conductivity (ECw) and soil 1/5 electrical conductivity (EC1∕5).
For water measurements, Orb River and groundwater salinity (piezometers) were
determined and for soil 1737 samples were randomly collected from different soil depths
(20, 50, 80, and 120 cm) between year 2012 and 2016 and measured. In order to
connect with agricultural practices observations and interviews with farmers were
conducted.
We found that some areas combining specific criteria presents higher electrical
conductivity: positions with lower elevation (a.s.l), Cambisols (Calcaric) / Fluvisols soil type
(WRB) and dominated clay textures. These observations combined with geochemical
determination and spatial analysis confirm our first hypothesis of sea salt intrusion as the
main driven factor of soil salinity in this region.
In this context, identification of salinization process, fine determination of pedological
specificities and fine understanding of agricultural practices allowed us to proposed
adaptation strategies to restore soil production function.
Please fill in your abstract text.
Key Words: Salinity, Coastal Agriculture, Landscape, Soil, Water |
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