Net N mineralization in agricultural soils

experimentally parameterized modelling for N fertilizer recommendations and inhibition effects in soils with specific former land-uses

verfasst von

Sabine Heumann

betreut von

Jürgen Böttcher

Abstract

This habilitation thesis is focusing on improving site- and year-specific modelling of net N mineralization in agricultural soils of Northern Germany for online N fertilizer recommendation purposes. The overall goal of the studies were to experimentally parameterize and evaluate a net N mineralization model allowing site-specific online parameterization. Futhermore, substances and processes possibly involved in unusually low net N mineralization in soils with specific former land uses, that are relatively rich in total organic C and N, were elucidated in order to adequately account for it in simulations. The synopsis is dedicated to merge the results from the six included papers plus a description of the achieved model applications, potential model limitations as well as the current working hypothesis on the mode of action of the inhibiting soil organic substances.

Organisationseinheit(en)

Institut für Bodenkunde

Typ

Habilitationsschrift

Anzahl der Seiten

72

Publikationsdatum

2019

Publikationsstatus

Veröffentlicht

Ziele für nachhaltige Entwicklung

SDG 2 – Kein Hunger, SDG 15 – Lebensraum Land

Elektronische Version(en)

https://doi.org/10.15488/4441 (Zugang: Offen)