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Erschienen in:

2013 | OriginalPaper | Buchkapitel

How Important Is Microbial Biodiversity in Controlling the Mineralisation of Soil Organic Matter?

verfasst von : Phil Brookes, Sarah Kemmitt

Erschienen in: Functions of Natural Organic Matter in Changing Environment

Verlag: Springer Netherlands

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Abstract

Nearly all soil organic matter is extensively humified, with some fractions existing for more than 1,000 years. Soil microorganisms are surrounded by about 50 times their mass of soil organic matter but can only metabolise it very slowly (‘basal mineralisation’ rate). Here, we show that the rate-limiting step in soil organic matter mineralisation is independent of microbial biomass size, community structure or activity. We suggest that the rate-limiting step is governed by abiological processes (the ‘regulatory gate’ hypothesis). This has significant implications for our understanding of carbon mineralisation in soils and the role of soil microorganisms in the global carbon cycle.

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Vorheriges Kapitel Interactions Between Silver Nanoparticles and Dissolved Natural Organic Matter Under Estuarine Conditions

Nächstes Kapitel The Influence of Humic Acids on the Activities of Lysozyme and Urease

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Titel: How Important Is Microbial Biodiversity in Controlling the Mineralisation of Soil Organic Matter?
verfasst von: Phil Brookes
Sarah Kemmitt
Verlag: Springer Netherlands
Buch: Functions of Natural Organic Matter in Changing Environment
Print ISBN: 978-94-007-5633-5

Electronic ISBN: 978-94-007-5634-2

Copyright-Jahr: 2013
DOI: https://doi.org/10.1007/978-94-007-5634-2_147