Details zur Publikation

Kategorie Datenpublikation
DOI 10.48758/ufz.12211
Titel (primär) Crop N-uptake responses to fertilization and its upscaling for catchment water quality modeling
Autor Yang, X.; Rode, M.; Jomaa, S.; Merbach, I.; Tetzlaff, D.; Soulsby, C.; Borchardt, D.
Quelle Data Investigation Portal UFZ
Erscheinungsjahr 2022
Department ASAM; BZF
Sprache englisch
Topic T5 Future Landscapes
UFZ Querschnittsthemen TERENO; MOSES;
Abstract Diffuse Nitrogen pollution from agriculture maintains high pressures on groundwater and aquatic ecosystems. Further mitigation requires targeted measures that reconcile agricultural interests in environmental protection. However, the agriculture-related processes of catchment N modeling remain poorly defined due to discipline-specific data and knowledge gaps. Using field-experimental data, crop N uptake responses to fertilizer management were parsimoniously conceptualized and integrated into a catchment diffuse-N model. The improved catchment modeling further facilitated integration with agricultural budget-based assessments. The integrated analysis in a mesoscale catchment disentangled contrasting agri-environment functional mechanisms in typically flashy chemodynamic and transport-limited chemostatic export regimes. Moreover, the former was actively responsive to inter-annual climatic variability and agricultural practices; the latter exhibited drought-induced enhancement of N enrichment, which could likely be mitigated through reduced fertilization. This interdisciplinary integration of data and methods provided an insightful evidence base for multi-sector targeted measures, especially under cumulative impacts of changing climate and fertilizer-use intensities.
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Yang, X., Rode, M., Jomaa, S., Merbach, I., Tetzlaff, D., Soulsby, C., Borchardt, D. (2022):
Crop N-uptake responses to fertilization and its upscaling for catchment water quality modeling
Data Investigation Portal UFZ 10.48758/ufz.12211