Sequestration of P fractions in the soils of an incipient ferralisation chronosequence on a humid tropical volcanic island

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dc.contributor.authorChiu, Chih‑Yu
dc.contributor.authorBaillie, Ian
dc.contributor.authorJien, Shih‑Hao
dc.contributor.authorHallett, Liam
dc.contributor.authorHallett, Stephen
dc.date.accessioned2022-01-03T12:28:17Z
dc.date.available2022-01-03T12:28:17Z
dc.date.issued2021-12-02
dc.description.abstractBackground: Phosphorus (P) is the limiting nutrient in many mature tropical forests. The ecological significance of declining P stocks as soils age is exacerbated by much of the remaining P being progressively sequestered. However, the details of how and where P is sequestered during the ageing in tropical forest soils remains unclear. Results: We examined the relationships between various forms of the Fe and Al sesquioxides and the Hedley fractions of P in soils of an incipient ferralitic chronosequence on an altitudinal series of gently sloping benches on Green Island, off the southeastern coast of Taiwan. These soils contain limited amounts of easily exchangeable P. Of the sesquioxide variables, only Fe and Al crystallinities increased significantly with bench altitude/soil age, indicating that the ferralisation trend is weak. The bulk of the soil P was in the NaOH and residual extractable fractions, and of low lability. The P fractions that correlated best with the sesquioxides were the organic components of the NaHCO3 and NaOH extracts. Conclusions: The amorphous sesquioxides, Feo and Alo, were the forms that correlated best with the P fractions. A substantial proportion of the labile P appears to be organic and to be associated with Alo in organic-aluminium complexes. The progression of P sequestration appears to be slightly slower than the chemical and mineralogical indicators of ferralisation.en_UK
dc.identifier.citationChiu CY, Baillie I, Jien SH, et al., (2021) Sequestration of P fractions in the soils of an incipient ferralisation chronosequence on a humid tropical volcanic island, Botanical Studies, Volume 62, Issue 1, December 2021, Article number 20en_UK
dc.identifier.issn1817-406X
dc.identifier.urihttps://doi.org/10.1186/s40529-021-00326-5
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/17358
dc.language.isoenen_UK
dc.publisherSpringeren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectSoil Pen_UK
dc.subjectHedley fractionsen_UK
dc.subjectSesquioxidesen_UK
dc.subjectChronosequenceen_UK
dc.subjectTaiwanen_UK
dc.titleSequestration of P fractions in the soils of an incipient ferralisation chronosequence on a humid tropical volcanic islanden_UK
dc.typeArticleen_UK

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