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A 13 C‐NMR study on the formation of soil organic matter from grass residues
Author(s) -
Leinweber Peter,
Fründ Rüdiger,
Reuter Gerhard
Publication year - 1993
Publication title -
zeitschrift für pflanzenernährung und bodenkunde
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 0044-3263
DOI - 10.1002/jpln.19931560507
Subject(s) - organic matter , loam , chemistry , silt , soil organic matter , carbon 13 nmr , composition (language) , marl , soil test , soil water , environmental chemistry , organic chemistry , soil science , geology , paleontology , linguistics , philosophy , structural basin
The development of C‐distribution on functional groups in soil organic matter (SOM) was investigated in whole soil samples and organomineral particle‐size fractions from the 34‐year‐old pot experiment Hu3‐Loamy marl at Rostock. CPMAS‐ 13 C‐NMR spectra of grass roots and whole soil samples indicated the enrichment of carboxyl‐C, aliphatic C and aromatic C in SOM, Only minor changes were observed in the SOM‐C distribution on functional groups between 13th and 34th experimental year. The investigation of organomineral clay and silt‐size fractions showed a specific retention of aliphatics in clay. The most obvious changes in organic matter composition in size‐fractions were the increase of carbohydrate‐C and decrease of aromatic C.