Changes in organic phosphorus composition in boreal forest humus soils: the role of iron and aluminium

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Changes in organic phosphorus composition in boreal forest humus soils: the role of iron and aluminium. / Vincent, Andrea G.; Schleucher, Jurgen; Grobner, Gerhard; Vestergren, Johan; Persson, Per; Jansson, Mats; Giesler, Reiner.

In: Biogeochemistry, Vol. 108, 2012, p. 485-499.

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Harvard

Vincent, AG, Schleucher, J, Grobner, G, Vestergren, J, Persson, P, Jansson, M & Giesler, R 2012, 'Changes in organic phosphorus composition in boreal forest humus soils: the role of iron and aluminium', Biogeochemistry, vol. 108, pp. 485-499. https://doi.org/10.1007/s10533-011-9612-0

APA

Vincent, A. G., Schleucher, J., Grobner, G., Vestergren, J., Persson, P., Jansson, M., & Giesler, R. (2012). Changes in organic phosphorus composition in boreal forest humus soils: the role of iron and aluminium. Biogeochemistry, 108, 485-499. https://doi.org/10.1007/s10533-011-9612-0

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Author

Vincent, Andrea G. ; Schleucher, Jurgen ; Grobner, Gerhard ; Vestergren, Johan ; Persson, Per ; Jansson, Mats ; Giesler, Reiner. / Changes in organic phosphorus composition in boreal forest humus soils: the role of iron and aluminium. In: Biogeochemistry. 2012 ; Vol. 108. pp. 485-499.

RIS

TY - JOUR

T1 - Changes in organic phosphorus composition in boreal forest humus soils: the role of iron and aluminium

AU - Vincent, Andrea G.

AU - Schleucher, Jurgen

AU - Grobner, Gerhard

AU - Vestergren, Johan

AU - Persson, Per

AU - Jansson, Mats

AU - Giesler, Reiner

N1 - 1-3

PY - 2012

Y1 - 2012

N2 - Organic phosphorus (P) is an important component of boreal forest humus soils, and its concentration has been found to be closely related to the concentration of iron (Fe) and aluminium (Al). We used solution and solid state P-31 NMR spectroscopy on humus soils to characterize organic P along two groundwater recharge and discharge gradients in Fennoscandian boreal forest, which are also P sorption gradients due to differences in aluminium (Al) and iron (Fe) concentration in the humus. The composition of organic P changed sharply along the gradients. Phosphate diesters and their degradation products, as well as polyphosphates, were proportionally more abundant in low Al and Fe sites, whereas phosphate monoesters such as myo-, scyllo- and unknown inositol phosphates dominated in high Al and Fe soils. The concentration of inositol phosphates, but not that of diesters, was positively related to Al and Fe concentration in the humus soil. Overall, in high Al and Fe sites the composition of organic P seemed to be closely associated with stabilization processes, whereas in low Al and Fe sites it more closely reflected inputs of organic P, given the dominance of diesters which are generally assumed to constitute the bulk of organic P inputs to the soil. These gradients encompass the broad variation in soil properties detected in the wider Fennoscandian boreal forest landscape, as such our findings provide insight into the factors controlling P biogeochemistry in the region but should be of relevance to boreal forests elsewhere.

AB - Organic phosphorus (P) is an important component of boreal forest humus soils, and its concentration has been found to be closely related to the concentration of iron (Fe) and aluminium (Al). We used solution and solid state P-31 NMR spectroscopy on humus soils to characterize organic P along two groundwater recharge and discharge gradients in Fennoscandian boreal forest, which are also P sorption gradients due to differences in aluminium (Al) and iron (Fe) concentration in the humus. The composition of organic P changed sharply along the gradients. Phosphate diesters and their degradation products, as well as polyphosphates, were proportionally more abundant in low Al and Fe sites, whereas phosphate monoesters such as myo-, scyllo- and unknown inositol phosphates dominated in high Al and Fe soils. The concentration of inositol phosphates, but not that of diesters, was positively related to Al and Fe concentration in the humus soil. Overall, in high Al and Fe sites the composition of organic P seemed to be closely associated with stabilization processes, whereas in low Al and Fe sites it more closely reflected inputs of organic P, given the dominance of diesters which are generally assumed to constitute the bulk of organic P inputs to the soil. These gradients encompass the broad variation in soil properties detected in the wider Fennoscandian boreal forest landscape, as such our findings provide insight into the factors controlling P biogeochemistry in the region but should be of relevance to boreal forests elsewhere.

U2 - 10.1007/s10533-011-9612-0

DO - 10.1007/s10533-011-9612-0

M3 - Article

VL - 108

SP - 485

EP - 499

JO - Biogeochemistry

T2 - Biogeochemistry

JF - Biogeochemistry

SN - 1573-515X

ER -