EGU General Assembly 2017, Vienna

We were present at the EGU General Assembly 2017 witch the contribution: Saturated hydraulic conductivity as parameter for modeling applications – comparison of determination methods
(Session SSS7.6/HS8.3.11 Soil water infiltration. Measurements, assessment and modeling.)

There presented was a side study about our measurement methods for hydraulic soil conductivity and their reliability. The first step was a simple comparison of the results. Measurements from different measurement ranges were extrapolated to saturated state what pointed out that evaporation method results were three orders of magnitude lower than those of hood infiltrometer and falling head lab method.

This lead to the perception that the former measures matric flow while the two latter methods measure macropore flow. As also the bubbling point for the treated soil volume was determined in course of the hood infiltrometer measurements, we hoped that this value includes some information about the transition between the two flow domains and we can use it for the better fitting of dual-permeable conductivity functions. By now, analyses based on that idea didn´t yield considerable results …

The Poster
The Abstract

Appendix

Soil Pore Dynamics

Welcome to the project SPorDyn!

In an international research cooperation we investigate temporal alterations of hydraulic soil properties and soil structure as effects of land management. Field and lab experiments in Eastern Austria and Germany are conducted frequently and give close insights to the evolution of the macropore structure and hence the ability to provide plant-available water in agricultural soils. Subsequently, a modelling approach will be developed to allow for temporal non-stationarity of hydraulic soil properties in soil water movement simulations.

Project Details