E-Dissertationen: Browsing E-Dissertationen by Author "Vereecken, Harry"
Now showing items 1-16 of 16
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Analysis of heterotrophic respiration response to soil temperature and moisture: experiments and modelling
Bauer, Jana (2009-10-19)The temperature and moisture response of heterotrophic soil respiration are crucial for a reliable prediction of carbon dynamics with respect to climatic changes. However, despite numerous studies there are many controversies ... -
Comparison of different soil water extraction systems for the prognoses of solute transport at the field scale using numerical simulations, field and lysimeter experiments
Weihermüller, Lutz (2005)Sampling of water and solutes in soils is of major importance to understand water movement and solute transport in soils and to validate mathematical models. Porous cups are widely used to extract soil water for monitoring ... -
Coupled hydrogeophysical inversion for soil hydraulic property estimation from time-lapse geophysical data
Mboh, Cho Miltin (2012-12-21)Good knowledge of the hydraulic properties of the vadose zone is important for understanding water flow and solute transport processes therein. This can help to promote sustainable use and mitigate anthropogenic threats ... -
Drying front formation in topmost soil layers as evaporative restraint: Non-invasive monitoring by magnetic resonance and numerical simulation
Merz, Steffen (2017-04-04)Prediction of soil moisture changes on large scales is of various interests with regard to water resources management. Within this PhD work, different Magnetic Resonance (MR) concepts/apparatus and sequences were applied ... -
Experiments and numerical studies on transport of sulfadiazine in soil columns
Unold, Myriam (2010-12-01)Veterinary antibiotics like sulfadiazine (SDZ) are used in large amounts worldwide. Excreted as parent compounds or in the form of metabolites they reach agricultural soils mainly via spreading of manure or sewage sludge ... -
Fate of veterinary pharmaceuticals in soil: An experimental and numerical study on the mobility, sorption and transformation of sulfadiazine
Wehrhan, Anne (2006)Among other sulfonamides sulfadiazine (SDZ) is a widely used antimicrobial substance in intensive livestock production to prevent and treat diseases. Up to 40 % of the administered sulfonamides are eliminated as microbial ... -
Feldversuche zur Erfassung des Transportverhaltens von gelösten und partikulären Tracern mittels Multitracing-Technik in einem schluffigen Boden
Burkhardt, Michael (2003)Die bodenphysikalische Heterogenität in strukturierten Böden und die Niederschlagintensität sind wichtige Faktoren für den gelösten und partikulären Transport durch die ungesättigte Bodenzone in das Grund- oder Oberflächenwasser. ... -
High precision lysimeters improve our understanding of water cycle and solute transport dynamics
Groh, Jannis (2018-11-28)Water is the most precious natural resource on earth. Understanding the movement of water and dissolved substances between the different compartments soil, vegetation, and atmosphere is of crucial importance to resolve ... -
Hydrological Characterization of a Forest Soil Using Electrical Resistivity Tomography
Oberdörster, Christoph (2010-07-13)An explicit knowledge of soil properties is required in agronomy, nature conservation, and hydrology to characterize water storage and water flow processes, even more in the context of climate change. Electrical resistivity ... -
The impact of soil water distribution on root development and root water uptake of winter wheat
Cai, Gaochao (2018-04-10)Root water uptake (RWU) is a key process in the root zone that determines water movement from the soil into roots and transport to the atmosphere via plant leaves. Different RWU models were developed with different assumptions ... -
Interpretation of L-band brightness temperatures of differently tilled bare soil plots
Dimitrov, Marin (2015-12-03)The structure of the surface soil layer is strongly influenced by soil tillage practices with important consequences for the soil hydraulic properties and soil moisture dynamics in the top soil layer. In this study, an ... -
Non-invasive monitoring of water and solute fluxes in a cropped soil
Garré, Sarah (2010-12-15)Although the influence of root water uptake on solute transport is commonly recognized as important, it has barely been studied throughout the literature. However, plants take up a big amount of the infiltrating water and ... -
Quantitative characterization of solute transport processes in an undisturbed unsaturated soil by means of electrical resistivity tomography (ERT)
Köstel, Johannes (2010-07-27)Improved understanding of water flow and solute transport through the unsaturated zone is important for the sustainable management of soils. As soils are complex and heterogeneous systems, quantification of the transport ... -
Sorption, Transformation and Transport of Sulfadiazine in a loess and a sandy Soil
Sittig, Stephan (2014-12-10)Veterinary antibiotics are unintentionally introduced into the environment and therefore found in ground and surface water, soil and sediments, air, plants etc. They enter these compartments mainly via application of manure ... -
Streamwater transit time distributions at the catchment scale: constraining uncertainties through identification of spatio-temporal controls
Stockinger, Michael Paul (2016-04-08)Precipitation water traveling through a catchment takes faster and slower flow paths to reach the outlet. The knowledge about the distribution of relevant flow paths in a catchment and their respective transit times of ... -
Three dimensional modelling of soil-plant interactions: consistent coupling of soil and plant root systems
Schröder, Tom (2009-07-10)To understand how the uptake of water by roots locally affects and is affected by the soil water distribution, 3D soil-root water transfer models are needed. Nowadays, fully coupled 3D models at the plant scale, that ...