Die chronologische Liste zeigt aktuelle Veröffentlichungen aus dem Forschungsbetrieb der Hochschule Weihenstephan-Triesdorf. Zuständig ist das Zentrum für Forschung und Wissenstransfer (ZFW).
Carbon sequestration in soils under agricultural use can contribute to climate change mitigation.Spatial–temporal soil organic carbon (SOC) monitoring requires more efficient data acquisition.This study aims to evaluate the potential of spectral on-the-go proximal measurements toserve these needs. The study was conducted as a long-term field experiment. SOC values rangedbetween 14 and 25 g kg−1 due to different fertilization treatments. Partial least squares regressionmodels were built based on the spectral laboratory and field data collected with two spectrometers(site-specific and on-the-go). Correction of the field data based on the laboratory data was done bytesting linear transformation, piecewise direct standardization, and external parameter orthogonalization(EPO). Different preprocessing methods were applied to extract the best possible informationcontent from the sensor signal. The models were then thoroughly interpreted concerning spectralwavelength importance using regression coefficients and variable importance in projection scores.The detailed wavelength importance analysis disclosed the challenge of using soil spectroscopy forSOC monitoring. The use of different spectrometers under varying soil conditions revealed shifts inwavelength importance. Still, our findings on the use of on-the-go spectroscopy for spatial–temporalSOC monitoring are promising.
Wir verwenden Cookies. Einige sind notwendig für die Funktion der Webseite, andere helfen uns, die Webseite zu verbessern. Um unseren eigenen Ansprüchen beim Datenschutz gerecht zu werden, erfassen wir lediglich anonymisierte Nutzerdaten mit „Matomo“. Um unser Internetangebot für Sie ansprechender zu gestalten, binden wir außerdem externe Inhalte unserer Social-Media-Kanäle ein.