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Transport preferences of P forms in wind-blown sediments of two susceptible soils
- Wind erosion of agricultural soils affects their stock of essential elements for plants, like phosphorus (P). It is known that the composition of the eroded sediments varies with height, according to the size and density of the transported substances. Aim of this study was to analyze the concentration and enrichment ratios of P forms in sediments transported by the wind. A wind-tunnel study was performed on a sandy-and a sandy loam soil in order to measure P forms concentrations in the saltating sediments. P concentrations were also measured in the particulate matter (PM) of each soil, gained with the Easy Dust Generator. In both soils, inorganic-(Pi) and organic P (Po) were preferentially transported in PM, with enrichment ratios of 1.8 and 5.5, respectively. Nevertheless, a Pi/Po of 0.9 indicated that the accumulation of the minor Po in PM was more pronounced than Pi. This agrees with P-rich light and easily erodible organic compounds, almost exclusively accumulated in PM, and in relatively heavy and less erodible minerals, likeWind erosion of agricultural soils affects their stock of essential elements for plants, like phosphorus (P). It is known that the composition of the eroded sediments varies with height, according to the size and density of the transported substances. Aim of this study was to analyze the concentration and enrichment ratios of P forms in sediments transported by the wind. A wind-tunnel study was performed on a sandy-and a sandy loam soil in order to measure P forms concentrations in the saltating sediments. P concentrations were also measured in the particulate matter (PM) of each soil, gained with the Easy Dust Generator. In both soils, inorganic-(Pi) and organic P (Po) were preferentially transported in PM, with enrichment ratios of 1.8 and 5.5, respectively. Nevertheless, a Pi/Po of 0.9 indicated that the accumulation of the minor Po in PM was more pronounced than Pi. This agrees with P-rich light and easily erodible organic compounds, almost exclusively accumulated in PM, and in relatively heavy and less erodible minerals, like apatites, in lower height sediments. Labile P (Pl) was preferentially transported in saltating sediments of both soils. This was attributed to the selective Bray & Kurtz I's extraction of the abundant inorganic P forms of these sediments. Total P (Pt) copied the transport trends of Pi, the major form. According to the transporting trends, Pi and Po would be re-sedimented at longer distances from the source than Pl. Outcomes become useful for modeling the influence of wind erosion on P cycling.…
Author details: | Laura Antonela IturriORCiD, Roger FunkORCiD, Michael SommerORCiDGND, Daniel BuschiazzoORCiD |
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DOI: | https://doi.org/10.1016/j.aeolia.2022.100776 |
ISSN: | 1875-9637 |
Title of parent work (English): | Aeolian research : an international journal on wind erosion research / International Society of Aeolian Research |
Publisher: | Elsevier |
Place of publishing: | Amsterdam [u.a.] |
Publication type: | Article |
Language: | English |
Date of first publication: | 2022/03/01 |
Publication year: | 2022 |
Release date: | 2024/03/20 |
Tag: | Nutrient; Semiarid; Soil fertility; Wind erosion; Wind tunnel |
Volume: | 55 |
Article number: | 100776 |
Number of pages: | 9 |
Funding institution: | Cooperation Project MINCyT (Argentina); CONICET (Argentina); DFG; (Germany) [FU247/10- 1]; PICT 2017, FONCyT (Argentina) [2111]; PIO 2015,; CONICET; UNLPam (Argentina) [02, 01]; FONCyT (Argentina) [2154] |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Umweltwissenschaften und Geographie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften |
Peer review: | Referiert |