A C-13-NMR STUDY ON THE FORMATION OF SOIL ORGANIC-MATTER FROM GRASS RESIDUES
Autor(en): | LEINWEBER, P FRUND, R REUTER, G |
Stichwörter: | 20-YEAR EXPERIMENTS; Agriculture; Agronomy; FOREST; HUMUS FORMATION; MASS-SPECTROMETRY; PARTICLE-SIZE FRACTIONS; Plant Sciences; ROSTOCK; Soil Science | Erscheinungsdatum: | 1993 | Herausgeber: | VCH PUBLISHERS INC | Enthalten in: | ZEITSCHRIFT FUR PFLANZENERNAHRUNG UND BODENKUNDE | Band: | 156 | Ausgabe: | 5 | Startseite: | 415 | Seitenende: | 420 | Zusammenfassung: | 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-C-13-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. |
ISSN: | 00443263 | DOI: | 10.1002/jpln.19931560507 |
Zur Langanzeige
Seitenaufrufe
4
Letzte Woche
0
0
Letzter Monat
3
3
geprüft am 06.06.2024