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Land use and fertilisation affect priming in tropical andosols

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dc.date.accessioned 2019-01-22T20:43:19Z
dc.date.available 2019-01-22T20:43:19Z
dc.date.issued 2018
dc.identifier.issn 1164-5563
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/148444
dc.description.abstract © 2018 Elsevier Masson SAS Input of available carbon and/or mineral fertilisation can accelerate mineralisation of soil organic matter i.e. priming effect. However, studies to priming effects in andic soils are absent despite their unique physicochemical and biological properties. Nutrients and 14C labelled glucose were added to Andosols of Mt. Kilimanjaro from six ecosystems: (1) savannah (2) maize fields (3) lower montane forest (4) coffee plantation (5) grasslands and (6) Chagga homegardens. Carbon-dioxide production was measured for 60 days. Maximal and minimal mineralisation rates immediately after glucose additions were observed in lower montane forest with N + P (9.1% ± 0.83 d −1) and in savannah with N (0.9% ± 0.17 d −1), respectively. Land use significantly influenced glucose induced priming effect measured as additional CO2 compared to unfertilised soil. Variations of the priming effect in land use without fertilisation are attributed to differences in microbial biomass content. Depending on land use, nutrient addition increased or decreased glucose induced priming effect. Maximal and minimal priming effect were observed in grassland soils (0.171 mg C-CO2 g−1 soil) with P and in soils under maize fields (0.009 mg C-CO2 g−1) fertilized with N, respectively. Microorganisms in Chagga homegarden soils incorporated the highest glucose percentage (6.47% ± 1.16), which was 3 times higher compared to grassland soils (2.18% ± 0.39). 50-60% of the 14C input was retained in bulk soil. Land use and fertilisation (N and P) affected priming in Andosols. Andosols occurring at Mt. Kilimanjaro, especially those under the Chagga homegardens shows great potential for soil C sequestration.
dc.relation.ispartofseries European Journal of Soil Biology
dc.subject Andosols
dc.subject C sequestration
dc.subject Chagga homegardens
dc.subject Mt. kilimanjaro
dc.subject Nutrients
dc.subject Priming effect
dc.title Land use and fertilisation affect priming in tropical andosols
dc.type Article
dc.relation.ispartofseries-volume 87
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 9
dc.source.id SCOPUS11645563-2018-87-SID85045623992


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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