Aufsatz in einer Fachzeitschrift
Near-infrared spectroscopy for determination of soil organic C, microbial biomass C and C and N fractions in a heterogeneous sample of German arable surface soils



Details zur Publikation
Autor(inn)en:
Linsler, D.; Sawallisch, A.; Hoeper, H.; Schmidt, H.; Vohland, M.; Ludwig, B.
Verlag:
TAYLOR & FRANCIS LTD
Publikationsjahr:
2017
Zeitschrift:
Archives of Agronomy and Soil Science
Seitenbereich:
1499-1509
Jahrgang/Band:
63
Heftnummer:
11
Erste Seite:
1499
Letzte Seite:
1509
Seitenumfang:
11
ISSN:
0365-0340

Zusammenfassung, Abstract
Visual and near-infrared spectroscopy (vis-NIRS) is an established method to estimate soil properties. However, only limited information is available to estimate C and N fractions in a heterogeneous sample. The objectives of our study were to determine estimation accuracies of vis-NIRS using two software for soil organic carbon (SOC), total nitrogen (N-t), pH, texture, and C and N fractions (light (LF), mineral (MF), labile, intermediate and passive fractions) in a heterogeneous sample (consisting of 51 units with different mineralogy) and to compare these results with those obtained by mid-infrared spectroscopy (MIRS). Analyzing vis-NIRS spectra and the mentioned properties showed a possibility to distinguish between high and low values for SOC (residual prediction deviation (RPD)=1.90) and N-t (RPD=1.93). Sand and clay could be estimated, whereas pH and silt could not. No useful estimation was possible for N-LF, passive C, intermediate C or intermediate N. C-LF, C-MF and N-MF could be differentiated between high and low values, whereas for passive N the estimation was approximate quantitative. MIRS reached one or two times higher estimation categories than vis-NIRS for SOC, N-t, pH and texture, suggesting that MIRS has a higher potential to estimate soil properties in a heterogeneous sample.


Schlagwörter
carbon fractions, cross-validation, Heterogeneous sample, nitrogen fractions


Autor(inn)en / Herausgeber(innen)

Zuletzt aktualisiert 2019-25-07 um 19:34