Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1111/sum.12881 |
Lizenz  |
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| Titel (primär) | Simulating the soil phosphorus dynamics of four long term field experiments with a novel phosphorus model |
| Autor | Gasser, S.A.A.; Nielsen, K.; Eichler-Löbermann, B.; Armbruster, M.; Merbach, I.; Franko, U. |
| Quelle | Soil Use and Management |
| Erscheinungsjahr | 2023 |
| Department | BZF; BOSYS |
| Band/Volume | 39 |
| Heft | 2 |
| Seite von | 867 |
| Seite bis | 880 |
| Sprache | englisch |
| Topic | T5 Future Landscapes |
| Keywords | soil P dynamics; soil process modelling; CNP-model; total P and available P |
| Abstract | Phosphorus is a non-renewable resource which is required for crop
growth and to maintain high yields. The soil P cycle is very complex, and new
model approaches can lead to a better understanding of those processes and
further guide to research gaps. The objective of this study is to present a P-submodel which has been integrated in the existing Carbon Candy Balance (CCB) model that, already comprises a C and N module. The P module is linked to the C mineralization and the associated C-pools via the C/P ratio of fresh organic material. Besides the organic P cycling the module implies a plant available P-pool (Pav), which is in a dynamic equilibrium with the non available P-pool (Pna) that comprises the strongly sorbed and occluded P fraction. The model performance was tested and evaluated on four long-term field experiments with mineral P fertilization, farm yard manure as organic fertilizer and control plots without fertilization. The C dynamics as well as the Pav dynamics were modelled with overall good results. The relative RMSE for the C was below 10% for all treatments while the relative RMSE for Pav was below 15% for most treatments. To accommodate for the rather small variety of available P models, the presented CNP-model is designed for agricultural field sites with a relatively low data input, namely air temperature, precipitation, soil properties, yields and management practices. The CNP-model offers a low entry threshold model approach to predict the C-N and now the P dynamics of agricultural soils. |
| dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=26098 |
| Gasser, S.A.A., Nielsen, K., Eichler-Löbermann, B., Armbruster, M., Merbach, I., Franko, U. (2023): Simulating the soil phosphorus dynamics of four long term field experiments with a novel phosphorus model Soil Use Manage. 39 (2), 867 - 880 10.1111/sum.12881 |
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