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dc.contributor.authorLeinonen Ien
dc.contributor.authorEory Ven
dc.contributor.authorMacLeod Men
dc.date.accessioned2018-11-08T08:34:30Z
dc.date.available2018-11-08T08:34:30Z
dc.date.issued2018
dc.identifier.citation209en
dc.identifier.urihttps://doi.org/10.1016/j.jclepro.2018.10.236
dc.identifier.urihttp://hdl.handle.net/11262/11546
dc.description.abstractAchieving an optimal nutrient balance is one of the main targets of sustainable agriculture. The aim of this study was to identify “hotspots” of agricultural nutrient imbalance. This was done by developing a modelling framework and using it to analyse the spatial distribution of agricultural nitrogen and phosphorus flows. The nutrient flows for the main livestock species in Scotland (namely cattle, sheep, pigs and chickens), were quantified using the Scottish Agricultural Emission Model (SAEM). The model was used in connection with agricultural census data for Scotland, which provided spatial distribution of the livestock production, including numbers of animals in certain livestock categories. The average fertiliser application rates for the main crops in Scotland were obtained from the British Survey of Fertiliser Practice and were used as an indicator of the nutrient demand for these crops. The Scottish agricultural census data were used to determine the spatial distribution of different arable crops and grassland in Scotland. This spatial information was combined with the nutrient excretion results to determine the nutrient balance. The results show that the areas with highest nitrogen fertiliser application rate are mainly located in central and eastern Scotland, including the areas where cereal production mainly occurs, while areas where the availability of excreted nutrients is highest are located in southern and north eastern Scotland, i.e. in the main cattle production areas. The higher stability of excreted phosphorus compared to nitrogen allowed a more detailed analysis of a regional phosphorus balance. In major parts of the agricultural production areas in eastern Scotland, the fertiliser application rate (crop nutrient demand) exceeds the amount of phosphorus excreted by the livestock. There are also areas where high phosphorus fertiliser application rate (crop production) and organic phosphorus output (from animal production) overlap, indicating that in these areas there is a high potential to re-use the phosphorus excreted by livestock. Compared to other spatial models for nutrient flows, the modelling framework utilizing a process-based livestock model provides scope to analyse the effects of livestock management and potential changes in livestock systems on regional nutrient balances in more detail.en
dc.description.sponsorshipScottish Government RESAS Strategic Research Programme (RD1.4.2, RD2.4.3)en
dc.language.isoenen
dc.relation.isformatof14961en
dc.relation.ispartofJournal of Cleaner Productionen
dc.rightsCopyright © 2018 Elsevier B.V. All rights reserved. This manuscript version is made available after the end of the 12 month embargo period under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectNitrogenen
dc.subjectPhosphorusen
dc.subjectAgricultural nutrient flowsen
dc.subjectNutrient imbalanceen
dc.subjectLivestock modelen
dc.titleApplying a process-based livestock model to predict spatial variation in agricultural nutrient flows in Scotlanden
dc.typeArticleen
dc.description.versionAccepted manuscript
dc.extent.pageNumbers180-189en
rioxxterms.publicationdate2018-10-23
rioxxterms.typeJournal Article/Reviewen
dcterms.dateAccepted2018-10-22
refterms.accessExceptionNAen
refterms.dateDeposit2018-11-08
refterms.dateEmbargoEnd2019-10-23
refterms.dateFreeToDownload2019-10-23
refterms.dateFreeToRead2019-10-23
refterms.dateToSearch2019-10-23
refterms.depositExceptionNAen
refterms.panelUnspecifieden
refterms.technicalExceptionNAen
refterms.versionAMen


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