Soil organic carbon and root distribution in a temperate arable agroforestry system

dc.contributor.authorUpson, Matthew A.
dc.contributor.authorBurgess, Paul J.
dc.date.accessioned2016-09-01T15:19:41Z
dc.date.available2016-09-01T15:19:41Z
dc.date.issued2013-06-01
dc.description.abstractAim To determine, for arable land in a temperate area, the effect of tree establishment and intercropping treatments, on the distribution of roots and soil organic carbon to a depth of 1.5 m. Methods A poplar (Populus sp.) silvoarable agroforestry experiment including arable controls was established on arable land in lowland England in 1992. The trees were intercropped with an arable rotation or bare fallow for the first 11 years, thereafter grass was allowed to establish. Coarse and fine root distributions (to depths of up to 1.5 m and up to 5 m from the trees) were measured in 1996, 2003, and 2011. The amount and type of soil carbon to 1.5 m depth was also measured in 2011. Results The trees, initially surrounded by arable crops rather than fallow, had a deeper coarse root distribution with less lateral expansion. In 2011, the combined length of tree and understorey vegetation roots was greater in the agroforestry treatments than the control, at depths below 0.9 m. Between 0 and 1.5 m depth, the fine root carbon in the agroforestry treatment (2.56 t ha-1) was 79% greater than that in the control (1.43 t ha-1). Although the soil organic carbon in the top 0.6 m under the trees (161 t C ha-1) was greater than in the control (142 t C ha-1), a tendency for smaller soil carbon levels beneath the trees at lower depths, meant that there was no overall tree effect when a 1.5 m soil depth was considered. From a limited sample, there was no tree effect on the proportion of recalcitrant soil organic carbon. Conclusions The observed decline in soil carbon beneath the trees at soil depths greater than 60 cm, if observed elsewhere, has important implication for assessments of the role of afforestation and agroforestry in sequestering carbon.en_UK
dc.identifier.citationUpson, M. A., Burgess, P. J. (2013) Soil organic carbon and root distribution in a temperate arable agroforestry system, Vol. 373, Iss. 1, pp. 43-58en_UK
dc.identifier.issn0032-079X
dc.identifier.urihttp://dx.doi.org/10.1007/s11104-013-1733-x
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/10483
dc.language.isoenen_UK
dc.publisherSpringeren_UK
dc.rightsAttribution-Non-Commercial-No Derivatives 3.0 Unported (CC BY-NC-ND 3.0). You are free to: Share — copy and redistribute the material in any medium or format. The licensor cannot revoke these freedoms as long as you follow the license terms. Under the following terms: Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Information: Non-Commercial — You may not use the material for commercial purposes. No Derivatives — If you remix, transform, or build upon the material, you may not distribute the modified material. No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.en_UK
dc.rightsThe final publication is available at Springer via http://dx.doi.org/10.1007/s11104-013-1733-xen_UK
dc.subjectAgroforestryen_UK
dc.subjectRootsen_UK
dc.subjectSoilen_UK
dc.subjectCarbonen_UK
dc.subjectCarbon fractionsen_UK
dc.subjectPopulusen_UK
dc.subjectCarbon sequestrationen_UK
dc.titleSoil organic carbon and root distribution in a temperate arable agroforestry systemen_UK
dc.typeArticleen_UK

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