Long-term impacts of season of grazing on soil carbon sequestration and selected soil properties in the arid Eastern Cape, South Africa

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dc.contributor.author Talore, Deribe Gemiyo
dc.contributor.author Tesfamariam, Eyob Habte
dc.contributor.author Hassen, Abubeker
dc.contributor.author Du Toit, J.C.O.
dc.contributor.author Klumpp, Katja
dc.contributor.author Soussana, J.F.
dc.date.accessioned 2015-09-02T05:16:14Z
dc.date.available 2015-09-02T05:16:14Z
dc.date.issued 2015-12
dc.description.abstract BACKGROUND AND AIMS : The karoo biomes of South Africa are major feed resources, yet soil nutrient depletion and degradation is a major problem. The objective of this study was to assess impacts of long-term (>75 years) grazing during spring (SPG), summer (SUG), winter (WG) and exclosure (non-grazed control) treatments on soil nutrients, penetration resistance and infiltration tests. METHODS : A soil sampling campaign was carried out to collect soil to a depth of 60 cm to analyse bulk density, soil physical and chemical parameters as well as soil compaction and infiltration. RESULTS : Generally, grazing treatments reduced soil organic C (SOC) stocks and C:N ratios, and modified soil properties. There was higher SOC stock (0.128 Mg ha-1 yr-1) in the exclosure than in the SPG (0.096 Mg ha-1 yr- 1), SUG (0.099 Mg ha-1 yr-1) and WG (0.105 Mg ha-1 yr-1). The C:N ratios exhibited similar pattern to that of C. From the grazing treatments, the WG demonstrated 7 to 10% additional SOC stock over the SPG and SUG, respectively. CONCLUSIONS : Short period animal exclusion could be an option to be considered to improve plant nutrients in sandy soils of South Africa. However, this may require a policy environment which supports stock exclusion from such areas vulnerable to land degradation, nutrient and C losses by grazing-induced vegetation and landscape changes. en_ZA
dc.description.embargo 2016-12-31 en_ZA
dc.description.librarian hb2015 en_ZA
dc.description.sponsorship Department of Science and Technology University of Pretoria) and the European Communities, 7th framework program under the grant agreement No. 266018, ANIMALCHANGE project. en_ZA
dc.description.uri http://link.springer.com/journal/11104 en_ZA
dc.identifier.citation Talore, DG, Tesfamariam, EH, Hassen, A, Du Toit, JCO, Klumpp, K & Soussana, JF 2015, 'Long-term impacts of season of grazing on soil carbon sequestration and selected soil properties in the arid Eastern Cape, South Africa', Plant and Soil, vol. 397, no. 1, pp. 317-329. en_ZA
dc.identifier.issn 0032-079X (print)
dc.identifier.issn 1573-5036 (online)
dc.identifier.other 10.1007/s11104-015-2625-z
dc.identifier.uri http://hdl.handle.net/2263/49686
dc.language.iso en en_ZA
dc.publisher Springer en_ZA
dc.rights © Springer International Publishing Switzerland 2015. The original publication is available at : http://link.springer.comjournal/11104. en_ZA
dc.subject Arid ecosystem en_ZA
dc.subject Exclosure en_ZA
dc.subject Grazing season en_ZA
dc.subject Organic matter en_ZA
dc.subject Soil organic carbon en_ZA
dc.subject Total nitrogen en_ZA
dc.title Long-term impacts of season of grazing on soil carbon sequestration and selected soil properties in the arid Eastern Cape, South Africa en_ZA
dc.type Postprint Article en_ZA


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