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DTSTAMP:20260814T221534Z
DESCRIPTION:Soil is a dynamic and hierarchically organized system of organi
 c and inorganic constituents\, the spatial structure of which defines a la
 rge\, complex and heterogeneous biogeochemical interface of pores and aggr
 egates. The aggregates are resulting from soil forming processes involving
  association of organic and mineral materials at the molecular scale\, and
  determine major soil functions. Our approach consists of controlled incub
 ation experiments combined with investigations of natural soils taking adv
 antage of natural gradients of soil texture or time of soil formation. The
  spatial distribution of elements characteristic of organic matter (OM) (C
  or N) and minerals (e.g.\, Fe\, Al\, O\, or Si) in soils at the sub-micro
 meter scale allows to map different soil components and to elucidate their
  association within the soil microstructure. These studies reveal that OM 
 occurs in patches\, and the surface is only partly covered with OM. This s
 ustains a coexistence of soil functions provided by mineral surfaces beyon
 d OM sequestration. The decoupling of OM sequestration from the proportion
  of mineral surfaces in the soil implies that there is no limit predetermi
 ned by clay content for the capacity of soils to sequester organic carbon.
 \n***\nInvited by Stefan Peiffer\, Hydrology
DTSTART;TZID=Europe/Berlin:20210617T121500
DTEND;TZID=Europe/Berlin:20210617T134500
SUMMARY:Prof. Dr. Ingrid Kögel-Knabner\, Chair of Soil Science\, Life Scien
 ces Centre Weihenstephan\, Technische Universität München (Homepage): Mine
 ral surfaces and organic matter accrual in soils
TRANSP:TRANSPARENT
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