Micro-scale heterogeneity of soil phosphorus depends on soil substrate and depth

Abstract Soils comprise various heterogeneously distributed pools of lithogenic, free organic, occluded, adsorbed, and precipitated phosphorus (P) forms, which differ depending on soil forming factors. Small-scale heterogeneity of element distributions recently has received increased attention in so...

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Autores principales:	Florian Werner, Carsten W. Mueller, Jürgen Thieme, Alessandra Gianoncelli, Camille Rivard, Carmen Höschen, Jörg Prietzel
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/616c8778dbe442edbb3fa51619229417
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spelling	oai:doaj.org-article:616c8778dbe442edbb3fa516192294172021-12-02T11:40:44ZMicro-scale heterogeneity of soil phosphorus depends on soil substrate and depth10.1038/s41598-017-03537-82045-2322https://doaj.org/article/616c8778dbe442edbb3fa516192294172017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03537-8https://doaj.org/toc/2045-2322Abstract Soils comprise various heterogeneously distributed pools of lithogenic, free organic, occluded, adsorbed, and precipitated phosphorus (P) forms, which differ depending on soil forming factors. Small-scale heterogeneity of element distributions recently has received increased attention in soil science due to its influence on soil functions and soil fertility. We investigated the micro-scale distribution of total P and different specific P binding forms in aggregates taken from a high-P clay-rich soil and a low-P sandy soil by combining advanced spectrometric and spectroscopic techniques to introduce new insights on P accessibility and availability in soils. Here we show that soil substrate and soil depth determine micro-scale P heterogeneity in soil aggregates. In P-rich areas of all investigated soil aggregates, P was predominantly co-located with aluminium and iron oxides and hydroxides, which are known to strongly adsorb P. Clay minerals were co-located with P only to a lesser extent. In the low-P topsoil aggregate, the majority of the P was bound organically. Aluminium and iron phosphate predominated in the quartz-rich low-P subsoil aggregate. Sorbed and mineral P phases determined P speciation in the high-P top- and subsoil, and apatite was only detected in the high-P subsoil aggregate. Our results indicate that micro-scale spatial and chemical heterogeneity of P influences P accessibility and bioavailability.Florian WernerCarsten W. MuellerJürgen ThiemeAlessandra GianoncelliCamille RivardCarmen HöschenJörg PrietzelNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Florian Werner Carsten W. Mueller Jürgen Thieme Alessandra Gianoncelli Camille Rivard Carmen Höschen Jörg Prietzel Micro-scale heterogeneity of soil phosphorus depends on soil substrate and depth
description	Abstract Soils comprise various heterogeneously distributed pools of lithogenic, free organic, occluded, adsorbed, and precipitated phosphorus (P) forms, which differ depending on soil forming factors. Small-scale heterogeneity of element distributions recently has received increased attention in soil science due to its influence on soil functions and soil fertility. We investigated the micro-scale distribution of total P and different specific P binding forms in aggregates taken from a high-P clay-rich soil and a low-P sandy soil by combining advanced spectrometric and spectroscopic techniques to introduce new insights on P accessibility and availability in soils. Here we show that soil substrate and soil depth determine micro-scale P heterogeneity in soil aggregates. In P-rich areas of all investigated soil aggregates, P was predominantly co-located with aluminium and iron oxides and hydroxides, which are known to strongly adsorb P. Clay minerals were co-located with P only to a lesser extent. In the low-P topsoil aggregate, the majority of the P was bound organically. Aluminium and iron phosphate predominated in the quartz-rich low-P subsoil aggregate. Sorbed and mineral P phases determined P speciation in the high-P top- and subsoil, and apatite was only detected in the high-P subsoil aggregate. Our results indicate that micro-scale spatial and chemical heterogeneity of P influences P accessibility and bioavailability.
format	article
author	Florian Werner Carsten W. Mueller Jürgen Thieme Alessandra Gianoncelli Camille Rivard Carmen Höschen Jörg Prietzel
author_facet	Florian Werner Carsten W. Mueller Jürgen Thieme Alessandra Gianoncelli Camille Rivard Carmen Höschen Jörg Prietzel
author_sort	Florian Werner
title	Micro-scale heterogeneity of soil phosphorus depends on soil substrate and depth
title_short	Micro-scale heterogeneity of soil phosphorus depends on soil substrate and depth
title_full	Micro-scale heterogeneity of soil phosphorus depends on soil substrate and depth
title_fullStr	Micro-scale heterogeneity of soil phosphorus depends on soil substrate and depth
title_full_unstemmed	Micro-scale heterogeneity of soil phosphorus depends on soil substrate and depth
title_sort	micro-scale heterogeneity of soil phosphorus depends on soil substrate and depth
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/616c8778dbe442edbb3fa51619229417
work_keys_str_mv	AT florianwerner microscaleheterogeneityofsoilphosphorusdependsonsoilsubstrateanddepth AT carstenwmueller microscaleheterogeneityofsoilphosphorusdependsonsoilsubstrateanddepth AT jurgenthieme microscaleheterogeneityofsoilphosphorusdependsonsoilsubstrateanddepth AT alessandragianoncelli microscaleheterogeneityofsoilphosphorusdependsonsoilsubstrateanddepth AT camillerivard microscaleheterogeneityofsoilphosphorusdependsonsoilsubstrateanddepth AT carmenhoschen microscaleheterogeneityofsoilphosphorusdependsonsoilsubstrateanddepth AT jorgprietzel microscaleheterogeneityofsoilphosphorusdependsonsoilsubstrateanddepth
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Micro-scale heterogeneity of soil phosphorus depends on soil substrate and depth

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