Small-scale spatial distribution of phosphorus fractions in soils from silicate parent material with different degree of podzolization

Werner, Florian; Haye, Tilman René de la; Spielvogel, Sandra; Prietzel, Jörg

doi:10.1016/j.geoderma.2017.04.026

Cited by 29 publications

(20 citation statements)

References 59 publications

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“…Pedogenesis in humid climates is strongly influenced by chemical weathering, involving acidification, weathering of primary minerals, loss of soluble elements, accumulation of Si-poor secondary clay minerals, enrichment of clay and sesquioxides (mainly Fe and Al oxides), and translocation of P-bearing compounds (Muhs, 2001;Nieuwenhuyse and Van Breemen, 1997;Werner et al, 2017). As a result of these processes, solum thickness, clay content, Fe ox+di and the total Fe and Al concentrations all increase, while SiO 2 , Na 2 O, MgO and CaO concentrations decrease (Muhs, 2001;Nieuwenhuyse and van Breemen, 1997;.…”

Section: Soil Properties and Effects Of Aeolian Dust Inputsmentioning

confidence: 99%

Aeolian dust deposition and the perturbation of phosphorus transformations during long-term ecosystem development in a cool, semi-arid environment

Hart

Turner

et al. 2019

Geochimica et Cosmochimica Acta

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Aeolian dust deposition is an important phosphorus (P) input to terrestrial ecosystems, but its influence on P dynamics during long-term ecosystem development remains poorly understood. In this study, we characterized P speciation using P K-edge XANES spectroscopy in surface soils (0-15 cm, A horizon) and contemporary aeolian dust collected at each site of a 3000-ky volcanic soil chronosequence in a cool, semi-arid environment. Phosphorus speciation in dust was dominated by calcium-bound P (Ca-P; 54-74%), with 11-23% iron and aluminum-bound P [(Fe + Al)-P] and 7-25% organic P (P o). In soils, P o contributed 1-23% of total P, being greater in older soils; however, the proportions of CaP (16-39%) and (Fe + Al)-P (48-82%) fluctuated with increasing weathering over the soil chronosequence. These soil fluctuations resulted from the accumulation and preservation of alkaline aeolian dust during pedogenesis in the semi-arid climate, which significantly increased soil CaP while decreasing the total amounts and relative abundances of soil (Fe + Al)-P. We suggest that the effects of an aeolian dust input on soil P transformations are functions of the relative magnitude and chemical composition of the dust input and the soil weathering intensity. For a given source of dust, when the net dust flux is greater than the weathering rate, dust accumulates and thus alters the pattern of P transformations during pedogenesis; otherwise, the dust influence on soil P transformations is negligible. By accurately identifying the chemical nature of P pools, our work highlights the advantage of P K-edge XANES spectroscopy over chemical extractions in examining soil P dynamics, and demonstrates how dust inputs can modify the Walker and Syers model of pedogenic P transformations in semi-arid environments. Overall, this work provides a foundation for understanding how dust influences P cycling during soil and ecosystem development, and indicates that dust inputs and composition, and the soil weathering rate, all must be considered for developing integrated climate-biogeochemical models with predictive power in terrestrial ecosystems.

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Section: Soil Properties and Effects Of Aeolian Dust Inputsmentioning

confidence: 99%

Aeolian dust deposition and the perturbation of phosphorus transformations during long-term ecosystem development in a cool, semi-arid environment

Hart

Turner

et al. 2019

Geochimica et Cosmochimica Acta

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“…Recent studies on some German spruce forest sites have inferred that forest P cycle strategies could evolve from 'acquiring system' to 'recycling system' as the soil P availability decreases (Lang et al 2017). The level of podsolization could be used an important indicator to know the forest ecosystem's P status-the later stage podsolization is, the more dominant by organic P cycling (recycling system) (Werner et al 2017). The high Al 3+ exchangeable sites and low soil C:P ratio (data not shown) at Klintaskogen indicate that the site is still at the early-mediate stage of podsolization.…”

Section: The Modeled Forest P Cyclementioning

confidence: 99%

Modeling the forest phosphorus nutrition in a southwestern Swedish forest site

Zanchi

Akselsson

et al. 2018

Ecological Modelling

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In this study, a phosphorus (P) module containing the biogeochemical P cycle has been developed and integrated into the forest ecosystem model ForSAFE. The model was able to adequately reproduce the measured soil water chemistry, tree biomass (wood and foliage), and the biomass nutrient concentrations at a spruce site in southern Sweden. Both model and measurements indicated that the site showed signs of P limitation at the time of the study, but the model predicted that it may return to an N-limited state in the future if N deposition declines strongly. It is implied by the model that at present time, the plant takes up 0.50 g P m-2 y-1 , of which 80% comes from mineralization and the remainder comes from net inputs, i.e. deposition and weathering. The sorption/desorption equilibrium of P contributed marginally to the supply of bioavailable P, but acted as a buffer, particularly during disturbances.

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“…Most of the P in soil will be in the top few centimetres, both in natural (Smeck, 1973;Lalibert e et al, 2012) and in agricultural systems (Dick, 1983;Holanda et al, 1998), especially under no-tillage conditions (Guertal et al, 1991;Cade-Menun et al, 2010). There is very little quantitative information in the literature about how P availability might vary in a horizontal direction (Werner et al, 2017), and this aspect is not explored in this review.…”

Section: Introductionmentioning

confidence: 99%

Costs of acquiring phosphorus by vascular land plants: patterns and implications for plant coexistence

et al. 2018

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Content Summary1420I.Introduction1421II.Root adaptations that influence P acquisition1422III.Costs of P acquisition: general1423IV.Costs of P acquisition that are independent of soil P concentrations1423V.Costs of P acquisition that increase as soil P concentrations decline1424VI.Discussion and conclusions1424Acknowledgements1425References1425 Summary We compare carbon (and hence energy) costs of the different modes of phosphorus (P) acquisition by vascular land plants. Phosphorus‐acquisition modes are considered to be mechanisms of plants together with their root symbionts and structures such as cluster roots involved in mobilising or absorbing P. Phosphorus sources considered are soluble and insoluble inorganic and organic pools. Costs include operating the P‐acquisition mechanisms, and resource requirements to construct and maintain them. For most modes, costs increase as the relevant soil P concentration declines. Costs can thus be divided into a component incurred irrespective of soil P concentration, and a component describing how quickly costs increase as the soil P concentration declines. Differences in sensitivity of costs to soil P concentration arise mainly from how economically mycorrhizal fungal hyphae or roots that explore the soil volume are constructed, and from costs of exudates that hydrolyse or mobilise insoluble P forms. In general, modes of acquisition requiring least carbon at high soil P concentrations experience a steeper increase in costs as soil P concentrations decline. The relationships between costs and concentrations suggest some reasons why different modes coexist, and why the mixture of acquisition modes differs between sites.

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Small-scale spatial distribution of phosphorus fractions in soils from silicate parent material with different degree of podzolization

Cited by 29 publications

References 59 publications

Aeolian dust deposition and the perturbation of phosphorus transformations during long-term ecosystem development in a cool, semi-arid environment

Aeolian dust deposition and the perturbation of phosphorus transformations during long-term ecosystem development in a cool, semi-arid environment

Modeling the forest phosphorus nutrition in a southwestern Swedish forest site

Costs of acquiring phosphorus by vascular land plants: patterns and implications for plant coexistence

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