Publication Details

Category Text Publication
Reference Category Book chapters
DOI 10.1016/B978-0-12-811687-6.00005-5
Title (Primary) SOM and microbes—what is left from microbial life
Title (Secondary) The future of soil carbon : its conservation and formation
Author Kästner, M.; Miltner, A. ORCID logo
Publisher Garcia, C.; Nannipieri, P.; Hernandez, T.
Year 2018
Department UBT
Page From 125
Page To 163
Language englisch
Keywords microbial necromass; stabilization; SOM; microbial pump; carbon sequestration; cell envelope fragments
Abstract Understanding processes of soil organic matter (SOM) formation is crucial for sustainable land use and for mitigation of global change. In recent decades, novel analytical tools have allowed significant progress in this field. SOM is now considered to be a continuum of plant and microbial residues at various stages of decay. Microbial residues play a particularly important role in SOM formation, which is embedded in the trilateral interrelationship between soil, plants, and microorganisms. Plant-derived material is processed by microorganisms into microbial biomass and finally necromass. Microbial carbon-use efficiency and stabilized necromass are thus the key flux-controlling factors. Carbon use efficiency depends on microbial metabolism and on environmental factors. Further degradation of microbial necromass is prevented by its spatial organization and by interactions with soil minerals. Here we provide the latest insights into these processes, with the aim of providing considerable help in developing and improving process-based models of SOM turnover and sustainable soil management.
Persistent UFZ Identifier
Kästner, M., Miltner, A. (2018):
SOM and microbes—what is left from microbial life
In: Garcia, C., Nannipieri, P., Hernandez, T. (eds.)
The future of soil carbon : its conservation and formation
Elsevier, London, p. 125 - 163 10.1016/B978-0-12-811687-6.00005-5