Impact of microbial activity on the leaching of soluble N forms in soil

A - Papers appearing in refereed journals

Carswell, A. M., Hill, P. W., Jones, D. L., Blackwell, M. S. A., Johnes, P. J., Dixon, E. R. and Chadwick, D. R. 2018. Impact of microbial activity on the leaching of soluble N forms in soil. Biology And Fertility Of Soils. 54 (1), pp. 21-25. https://doi.org/10.1007/s00374-017-1250-9

AuthorsCarswell, A. M., Hill, P. W., Jones, D. L., Blackwell, M. S. A., Johnes, P. J., Dixon, E. R. and Chadwick, D. R.
Abstract

The hydrological transport of low-molecular weight organic nitrogen (LMWON) compounds has received little attention in the literature, particularly relative to inorganic nitrogen (N), with less attention given to the decoupling of the carbon (C) and N cycles following rainfall events. We determined the impacts of the soil biota on the transport of N compounds in a loam soil, using 15N and 13C to trace the vertical transport of 15N13C-urea, 15N13C-amino acids, 15NO3, and 15NH4 through the soil profile, following simulated rainfall events. This research has demonstrated that biotic assimilation leads to rapid decoupling of the C and N cycles during leaching, with C transport limited to the soil surface (< 2 cm), whereas N which was stored within the soil profile during a single rainfall event could be remobilised and leached (a further 2–6 cm) following an additional rainfall event.

Year of Publication2018
JournalBiology And Fertility Of Soils
Journal citation54 (1), pp. 21-25
Digital Object Identifier (DOI)https://doi.org/10.1007/s00374-017-1250-9
Open accessPublished as ‘gold’ (paid) open access
FunderNatural Environment Research Council
Lawes Agricultural Trust
Publisher's version
Output statusPublished
Publication dates
Online19 Oct 2017
Publication process dates
Accepted11 Oct 2017
PublisherSpringer Nature
Springer
Copyright licenseCC BY
Grant IDNE/K01093X/1
ISSN0178-2762

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