Stoichiometry of cationic nutrients in Phaeozems derived from skarn and Acrisols from other parent materials in lowland forests of Thailand

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dc.contributor.authorBaillie, Ian C.
dc.contributor.authorBunyavejchewin, Sarayudh
dc.contributor.authorKaewfoo, Manop
dc.contributor.authorBaker, Patrick J.
dc.contributor.authorHallett, Stephen H.
dc.date.accessioned2017-11-22T13:40:11Z
dc.date.available2017-12-14T13:40:11Z
dc.date.issued2017-11-07
dc.description.abstractSome soils under tropical forests in western Thailand are derived from skarn complexes of hydrothermally metamorphosed granitic, calcareous and ultramafic rocks. We used data from six large, long-term forest ecological research plots to compare the soils derived from skarn with forest soils derived from granites and sedimentary parent materials elsewhere Thailand. The soils derived from skarn are Vermic Phaeozems and have deep, dark, worm-worked topsoils and bimodal particle size distributions of coarse sand and grit in clay or fine loam matrices. They are eutrophic with respect to both labile and non-labile forms of the mineral nutrients. The soils derived from other parent materials are mostly Acrisols. Analyses of variance for the cationic nutrients taken independently clearly distinguished the Phaeozems from the Acrisols. The two groups are also stoichiometrically distinct with respect to the main cationic nutrients, as depicted graphically by nutrient roses and as quantified as M+:TEB ratios. The cationic stoichiometric proportions also differentiated between the Acrisols on different plots and parent materials; and between the Phaeozems in our study and eutrophic soils in lowland forests elsewhere in the lowland tropics, with the Phaeozems having lower exchangeable Ca and Mg contents but higher exchangeable K. Subsoil cationic stoichiometric profiles appear to derive from parent materials, but those of the topsoil may be modified by selective biotic recycling. Nonetheless, inherited lithogenic stoichiometric ratios are still apparent in our topsoils. The forests on skarn in West Thailand are varied and overlap with those on Acrisols and other soils. This confirms earlier findings that climate and disturbance history have more influence than soils on the regional distribution of forest types in Thailand, although soils can be important at more local scales.en_UK
dc.identifier.citationBaillie IC, Bunyavejchewin S, Kaewfoo M, Baker PJ, Hallett SH, Stoichiometry of cationic nutrients in Phaeozems derived from skarn and Acrisols from other parent materials in lowland forests of Thailand, Geoderma, Volume 12, March 2018, pp. 1-9en_UK
dc.identifier.issn0016-7061
dc.identifier.urihttp://dx.doi.org/10.1016/j.geodrs.2017.11.002
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/12753
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rightsAttribution 4.0 International (CC BY 4.0) You are free to: Share — copy and redistribute the material in any medium or format Adapt — remix, transform, and build upon the material for any purpose, even commercially. 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: No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectNutrient roseen_UK
dc.subjectVermicen_UK
dc.subjectEarthwormsen_UK
dc.subjectTermitesen_UK
dc.subjectPhaeozemsen_UK
dc.subjectMollisolsen_UK
dc.subjectAcrisolsen_UK
dc.subjectUltisolsen_UK
dc.titleStoichiometry of cationic nutrients in Phaeozems derived from skarn and Acrisols from other parent materials in lowland forests of Thailanden_UK
dc.typeArticleen_UK

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