Irrigation and SOC sequestration in the region of Navarre in Spain
Fecha
2021Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Capítulo de libro / Liburuen kapitulua
Versión
Versión publicada / Argitaratu den bertsioa
Impacto
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10.4060/cb6598en
Resumen
The project REGADIOX, funded by the European Commission LIFE Program was based on the establishment
of a regional-scale network of representative agricultural plots in three irrigation districts in Navarre (NE Spain).
The project allowed for a rational evaluation of soil organic C (SOC) sequestration and greenhouse gases (GHG)
emissions balances by using paired comparisons in terms of soil cha ...
[++]
The project REGADIOX, funded by the European Commission LIFE Program was based on the establishment
of a regional-scale network of representative agricultural plots in three irrigation districts in Navarre (NE Spain).
The project allowed for a rational evaluation of soil organic C (SOC) sequestration and greenhouse gases (GHG)
emissions balances by using paired comparisons in terms of soil characteristics in irrigated vs rainfed plots. The
results showed a clear influence of irrigation in soil condition, arising from greater SOC storage. The net effect
was however modulated by soil characteristics and management practices, in so far as the different agricultural
strategies did have different potential to sequester SOC and/or reduce GHG emissions. While permanent crops
with green cover (which was possible thanks to irrigation) or semi-permanent crops as alfalfa were win-win
strategies with positive C balances, intensive systems with two crops per year, although they also contributed to
SOC gains, represented increased GHG emissions.
The observed changes in SOC associated to irrigation with different managements also showed that irrigation
adoption can alter the soils’ capacity to provide key ecosystem services beyond biomass production, as changes
in soils properties related to SOC, such as water-holding capacity or soil erodibility were also observed. These
changes were, however, not straightforward and varied depending on soil type, climate and time under
irrigation. [--]
Materias
Adequate irrigation practices,
Organic agriculture,
Crop rotations,
Drylands
Editor
FAO
Publicado en
FAO; ITPS.: Recarbonizing global soils: a technical manual of recommended management practices: Vol. 4. Cropland, grassland, integrated systems and farming approaches: case studies. FAO, 2021, pp. 206-213, 978-92-5-134897-0
Departamento
Universidad Pública de Navarra. Departamento de Ciencias /
Nafarroako Unibertsitate Publikoa. Zientziak Saila