Nitrogen species specific phosphorus mineralization in temperate floodplain soils

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 func...

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Autores principales:	Mary R. Arenberg, Yuji Arai
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fd60beb4e82a4035a881e8ebb16ae508
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spelling	oai:doaj.org-article:fd60beb4e82a4035a881e8ebb16ae5082021-12-02T19:04:11ZNitrogen species specific phosphorus mineralization in temperate floodplain soils10.1038/s41598-021-96885-52045-2322https://doaj.org/article/fd60beb4e82a4035a881e8ebb16ae5082021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96885-5https://doaj.org/toc/2045-2322Abstract 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. 31P 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.Mary R. ArenbergYuji AraiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mary R. Arenberg Yuji Arai Nitrogen species specific phosphorus mineralization in temperate floodplain soils
description	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. 31P 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.
format	article
author	Mary R. Arenberg Yuji Arai
author_facet	Mary R. Arenberg Yuji Arai
author_sort	Mary R. Arenberg
title	Nitrogen species specific phosphorus mineralization in temperate floodplain soils
title_short	Nitrogen species specific phosphorus mineralization in temperate floodplain soils
title_full	Nitrogen species specific phosphorus mineralization in temperate floodplain soils
title_fullStr	Nitrogen species specific phosphorus mineralization in temperate floodplain soils
title_full_unstemmed	Nitrogen species specific phosphorus mineralization in temperate floodplain soils
title_sort	nitrogen species specific phosphorus mineralization in temperate floodplain soils
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/fd60beb4e82a4035a881e8ebb16ae508
work_keys_str_mv	AT maryrarenberg nitrogenspeciesspecificphosphorusmineralizationintemperatefloodplainsoils AT yujiarai nitrogenspeciesspecificphosphorusmineralizationintemperatefloodplainsoils
_version_	1718377245486088192

Nitrogen species specific phosphorus mineralization in temperate floodplain soils

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