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- W3198375700 abstract "Abstract As an essential component of enzymes, higher N availability from agricultural runoff to forest soils may boost the activity of phosphatase, increasing the bioavailability of phosphate. The objective of this study was to evaluate P mineralization rates in temperate floodplain soils as a function of inorganic N species (i.e., ammonium and nitrate) and amendment rate (1.5–3.5 g N kg −1 ). Accordingly, the soil was amended with nitrate and ammonium, and P dynamics were monitored during a 40-day incubation. The addition of ammonium significantly boosted acid and alkaline phosphatase activity by 1.39 and 1.44 µmol p -nitrophenol P (pNP) g −1 h −1 , respectively. The degree of increase was positively correlated with the amendment rate. Likewise, the P mineralization rate increased by 0.27 mg P kg −1 in the 3.5 g N kg −1 ammonium treatment. 31 P nuclear magnetic resonance spectroscopic analysis further supported the reduction in organic orthophosphate diesters on day 30. Meanwhile, the addition of nitrate promoted P mineralization to a lesser degree but did not increase phosphatase activity. While floodplain soils have great potential to sequester anthropogenic P, high availability of inorganic N, especially ammonium, could promote P mineralization, potentially increasing P fertility and/or reducing P the sequestration capacity of floodplain soils." @default.
- W3198375700 created "2021-09-13" @default.
- W3198375700 creator A5002032369 @default.
- W3198375700 creator A5088531333 @default.
- W3198375700 date "2021-08-31" @default.
- W3198375700 modified "2023-09-24" @default.
- W3198375700 title "Nitrogen species specific phosphorus mineralization in temperate floodplain soils" @default.
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