Soil carbon and nitrogen mineralization after the initial flush of CO2

Soil carbon and nitrogen mineralization after the initial flush of CO2

Abstract Soil health evaluation with biological activity requires standardization for greater understanding across environments. Soil‐test biological activity (STBA) may be an important indicator of soil N availability, but how it relates to long‐term soil N mineralization (NMIN) has not been docume...

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Main Author: Alan J. Franzluebbers
Format: Article
Language:English
Published: Wiley 2020-01-01
Series:Agricultural & Environmental Letters
Online Access:https://doi.org/10.1002/ael2.20006
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spelling doaj-cc64b381dcef4b1aa33d6e66bbce89a22021-02-05T06:02:44ZengWileyAgricultural & Environmental Letters2471-96252020-01-0151n/an/a10.1002/ael2.20006Soil carbon and nitrogen mineralization after the initial flush of CO2Alan J. Franzluebbers0USDA Agricultural Research Service 3218 Williams Hall, NCSU Campus Box 7620 Raleigh NC 27695 USAAbstract Soil health evaluation with biological activity requires standardization for greater understanding across environments. Soil‐test biological activity (STBA) may be an important indicator of soil N availability, but how it relates to long‐term soil N mineralization (NMIN) has not been documented. This study evaluated short‐ and longer‐term C and N mineralization in five soils from Georgia and North Carolina to validate associations between STBA and net NMIN. Although mathematical descriptions of cumulative C mineralization (CMIN) were logical and consistent among soil types, descriptions of net NMIN were complicated by the need to fit to single and double exponential models for different soil types. Rather than relying on exponential model fitting, emphasis on associations between linked processes of CMIN and NMIN resulted in simple, logical, and relatable interpretations. Soil‐test biological activity is a simple, rapid, and robust indicator that shows strong association with soil NMIN for up to 150 d.https://doi.org/10.1002/ael2.20006
collection DOAJ
language English
format Article
sources DOAJ
author Alan J. Franzluebbers
spellingShingle Alan J. Franzluebbers
Soil carbon and nitrogen mineralization after the initial flush of CO2
Agricultural & Environmental Letters
author_facet Alan J. Franzluebbers
author_sort Alan J. Franzluebbers
title Soil carbon and nitrogen mineralization after the initial flush of CO2
title_short Soil carbon and nitrogen mineralization after the initial flush of CO2
title_full Soil carbon and nitrogen mineralization after the initial flush of CO2
title_fullStr Soil carbon and nitrogen mineralization after the initial flush of CO2
title_full_unstemmed Soil carbon and nitrogen mineralization after the initial flush of CO2
title_sort soil carbon and nitrogen mineralization after the initial flush of co2
publisher Wiley
series Agricultural & Environmental Letters
issn 2471-9625
publishDate 2020-01-01
description Abstract Soil health evaluation with biological activity requires standardization for greater understanding across environments. Soil‐test biological activity (STBA) may be an important indicator of soil N availability, but how it relates to long‐term soil N mineralization (NMIN) has not been documented. This study evaluated short‐ and longer‐term C and N mineralization in five soils from Georgia and North Carolina to validate associations between STBA and net NMIN. Although mathematical descriptions of cumulative C mineralization (CMIN) were logical and consistent among soil types, descriptions of net NMIN were complicated by the need to fit to single and double exponential models for different soil types. Rather than relying on exponential model fitting, emphasis on associations between linked processes of CMIN and NMIN resulted in simple, logical, and relatable interpretations. Soil‐test biological activity is a simple, rapid, and robust indicator that shows strong association with soil NMIN for up to 150 d.
url https://doi.org/10.1002/ael2.20006
work_keys_str_mv AT alanjfranzluebbers soilcarbonandnitrogenmineralizationaftertheinitialflushofco2
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