Organic carbon storage and dynamics as affected by the adoption of irrigation in a cultivated calcareous mediterranean soil

Antón Sobejano, Rodrigo; Derrien, Delphine; Urmeneta Martín-Calero, Henar; Van der Heijden, Gregory; Enrique Martín, Alberto; Virto Quecedo, Íñigo

Organic carbon storage and dynamics as affected by the adoption of irrigation in a cultivated calcareous mediterranean soil

dc.contributor.author	Antón Sobejano, Rodrigo
dc.contributor.author	Derrien, Delphine
dc.contributor.author	Urmeneta Martín-Calero, Henar
dc.contributor.author	Van der Heijden, Gregory
dc.contributor.author	Enrique Martín, Alberto
dc.contributor.author	Virto Quecedo, Íñigo
dc.contributor.department	Zientziak	eu
dc.contributor.department	Estatistika, Informatika eta Matematika	eu
dc.contributor.department	Institute on Innovation and Sustainable Development in Food Chain - ISFOOD	en
dc.contributor.department	Ciencias	es_ES
dc.contributor.department	Estadística, Informática y Matemáticas	es_ES
dc.contributor.funder	Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa	es
dc.date.accessioned	2022-06-08T12:10:37Z
dc.date.available	2022-06-08T12:10:37Z
dc.date.issued	2022
dc.date.updated	2022-06-08T12:00:26Z
dc.description.abstract	Irrigation is in the spotlight of land-use planning in semi-arid and sub-humid regions. It can be a promising practice to promote soil organic C storage (SOC), although it may also involve an increase in soil GHG emissions. Assessing the impact of its adoption on SOC storage is crucial to better understand its potential role in terms of agricultural sustainability and climate policies. In this study, we measured and modeled the changes in soil organic C storage and dynamics in the tilled soil layer (0-30 cm) of an experimental field on a calcareous soil with two different crops (maize, a C4 plant, and wheat, a C3 plant), cultivated with and without irrigation for 7 years. We hypothesized that changes in SOC storage occur when introducing irrigation and/or different crops in an agrosystem, and that they would be related to changes in the incorporation of crop residues, their partitioning between the labile and the stable fraction, and C losses bymineralization. Our results validated theses hypotheses only partially. Over the 7-year study period, irrigation significantly increased total (TOC) and sand-size (50-2,000 µm) particulate organic C (POC50-2,000) stocks in the tilled layer (0-30 cm): +7.1%TOC and +12.1%POC50-2,000 for maize, and +7.0 and +12.3% for wheat. A parallel two-pool SOC model based on TOC and POC50-2,000 fractions and the C3-C4 plant shift allowed understanding that the observed changes in SOC storage were most likely related to an increase in C inputs from crop residues, and to a more efficient incorporation of these residues with irrigation. The mean residence time of SOC in the two modeled pools did not allow to support our hypothesis of changes in SOC mineralization with irrigation. The limitations of SOC fractionation, which implied that some labile fractions might have been lost from POC50-2,000 and recovered in the fraction identified as slow-turning, together with the interaction of the carbonate-rich mineral phase of this soil can explain at least partially this observation. We conclude that irrigation can contribute to effectively increase SOC storage in themid-term, but its effectmight be dependent upon the type of crops and soil.	en
dc.description.sponsorship	The authors thank funding from INIA, Spanish Agency (Grant INIA RTA2009-00052-C02-02), and the European Commission Integrated Life Program (Life NADAPTA Project, LIFE 16 IPC/ES/000001). RA was awarded a pre-doctoral fellowship by Universidad Pública de Navarra.	en
dc.format.extent	18 p.
dc.format.mimetype	application/pdf	en
dc.format.mimetype	application/zip	en
dc.identifier.citation	Antón, R.; Derrien, D.; Urmeneta, H.; van-der-Heijden, G.; Enrique, A.; Virto, I.. (2022). Organic carbon storage and dynamics as affected by the adoption of irrigation in a cultivated calcareous mediterranean soil. Frontiers in Soil Science. 2,831775 1-18 .	en
dc.identifier.doi	10.3389/fsoil.2022.831775
dc.identifier.issn	2673-8619
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/43109
dc.language.iso	eng	en
dc.publisher	Frontiers Media	en
dc.relation.ispartof	Frontiers In Soil Science, 2022, 2 (831775),1-18	en
dc.relation.publisherversion	https://doi.org/10.3389/fsoil.2022.831775
dc.rights	© 2022 Antón, Derrien, Urmeneta, van der Heijden, Enrique and Virto. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.	en
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/
dc.subject	Carbon sequestration	en
dc.subject	Irrigation	en
dc.subject	Calcareous soils	en
dc.subject	Maize	en
dc.subject	Soil organic C modeling	en
dc.subject	Stable carbon isotopes	en
dc.title	Organic carbon storage and dynamics as affected by the adoption of irrigation in a cultivated calcareous mediterranean soil	en
dc.type	info:eu-repo/semantics/article
dc.type.version	info:eu-repo/semantics/publishedVersion
dspace.entity.type	Publication
relation.isAuthorOfPublication	234e884d-33c7-488e-b1ca-0319926c2819
relation.isAuthorOfPublication	bbb02c0b-cef5-4e8a-a4ef-2ee7c66ca301
relation.isAuthorOfPublication	53c4e0ea-0230-4409-9301-b6237b5c7ea3
relation.isAuthorOfPublication	82a7f816-92e7-455e-a217-bf3dee861db9
relation.isAuthorOfPublication.latestForDiscovery	234e884d-33c7-488e-b1ca-0319926c2819