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Land use and management effects on N2O emissions on site to regional scales under present/future conditions in the Hai river basin, China

Description: Das Projekt "Land use and management effects on N2O emissions on site to regional scales under present/future conditions in the Hai river basin, China" wird vom Umweltbundesamt gefördert und von Karlsruher Institut für Technologie (KIT), Sondervermögen Großforschung, Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU) durchgeführt. The project aims at the quantification of impacts of on-going and projected changes in land use (LU), management and environmental conditions on the dynamic exchange of carbon and nitrogen (C & N) components between the terrestrial ecosystem, atmosphere and hydrosphere. Model development will be based on the quantification of spatial variability of N2O (as well as CH4 and CO2) fluxes at field scale obtained from eddy covariance (EC) quantum cascade laser (QCL) and static chamber measurements. Assessment of impacts of LU and management on exchange processes will be obtained by analyzing long-term retrospective as well as prognostic model runs for past, present and future conditions. For quantification of greenhouse gas (GHG) emissions and N-leaching on landscape scale, impacts of regional hydrology processes (e.g. water table dynamics and nutrient dispersion by/ with irrigation) on the biogeochemical cycling of C & N have to be accounted for. To address this complexity, we will couple Mobile2D (the regional version of MOBILE-DNDC) with a regional hydrological model. Mobile2D as well as the coupled system will be used to assess the impact of changes in predicted LU/ management and climate conditions on C & N stocks, the net GHG exchange (NGE), water availability and quality (N-leaching). Simulations driven by a GIS database holding information on LU, soil & vegetation properties and climate will create GHG inventories and sources strengths assessments on field and regional (Hai He basin) scales for a series of actual and potential cropping systems under different development pathways, management practices and climate change scenarios.

Types:

SupportProgram

Origin: /Bund/UBA/UFORDAT

Tags: Haifisch ? Bodenvegetation ? Treibhausgasinventar ? Qualitätsmanagementsystem ? Kohlenstoff ? Laser ? Meteorologie ? Nährstoff ? Stickstoff ? Stickstoffdioxid ? Umweltauswirkung ? Europäische Gemeinschaften ? China ? Treibhausgasemission ? Methan ? Wasserverfügbarkeit ? Kohlendioxid ? Aufbereitungstechnik ? On-Site-Verfahren ? Umweltmanagement ? Landnutzungsänderung ? Gelöster organischer Kohlenstoff ? Geografisches Informationssystem ? Lachgas ? Terrestrisches Ökosystem ? Prognosemodell ? Simulation ? Dispersion ? Ackerland ? Emission ? Umweltforschung ? Wirkungsanalyse ? Flussgebiet ? Entwicklungsmodell ? Flächennutzung ? Bewässerung ? Management ? Messung ? Einzugsgebiet ? Grundwasserstand ? Klimaforschung ? Hydrologie ? Datenbank ? Hydrosphäre ? Umweltveränderung ? Landschaft ? Klimawandel ? Treibhausgas ? Atmosphäre ? Klimaszenario ? Austauschprozess ?

Region: Bayern

Bounding box: 12.53381° .. 12.53381° x 47.795° .. 47.795°

License: cc-by-nc-nd/4.0

Language: Deutsch

Organisations

Time ranges: 2011-03-01 - 2014-02-28

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