Modeling nitrous oxide emissions and associated C and N turnover and exchange processes between atmosphere and biosphere for agricultural ecosystems on site and regional scale [Elektronische Ressource] / by Daniela Kracher

Modeling nitrous oxide emissions and associated C and N turnover and exchange processes between atmosphere and biosphere for agricultural ecosystems on site and regional scale Thesis submitted in partial fulfillment of the irreemquents of the degree Doctor rer. nat. of the Faculty of Forest and Environmental Sciences, Albert-Ludwigs-Universität, Freiburg im Breisgau, Germany by Daniela Kracher Freiburg im Breisgau, Germany 2010 Dean: Prof. Dr. Jürgen Bauhus Supervisor: Prof. Dr. Klaus Butterbach-Bahl nd2 Supervisor: Prof. Dr. Heinz Rennenberg Date of Defence: 02.12.2010 SUMMARY Agriculture and climate change are closely linkeude dto the importance of agricultural activities as sources of greenhouse gases (GHG). Process-ori emntoeddels have been proven useful tools to examine and better understand the processes invdo lvien the C and N cycle in agricultural ecosystems and processes involved in the produc taionnd consumption of GHG. Within the scope of this PhD project, the process-oriented biogeochemailc Denitrification-Decomposition model in the Modular Biosphere Simulation Environment (Mobile-DNDC) was applied and further developed.