Soil water retention and hydraulic conductivity measured in a wide saturation range

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Tobias L. Hohenbrink - , Technical University of Braunschweig, German Weather Service (Author)
  • Conrad Jackisch - , Freiberg University of Mining and Technology, Karlsruhe Institute of Technology (Author)
  • Wolfgang Durner - , Technical University of Braunschweig (Author)
  • Kai Germer - , Johann Heinrich von Thunen Institute (Author)
  • Sascha C. Iden - , Technical University of Braunschweig (Author)
  • Janis Kreiselmeier - , Chair of Site Ecology and Plant Nutrition, Johann Heinrich von Thunen Institute (Author)
  • Frederic Leuther - , Helmholtz Centre for Environmental Research, University of Bayreuth (Author)
  • Johanna C. Metzger - , University of Hamburg, Friedrich Schiller University Jena (Author)
  • Mahyar Naseri - , Technical University of Braunschweig, Johann Heinrich von Thunen Institute (Author)
  • Andre Peters - , Technical University of Braunschweig (Author)

Abstract

Soil hydraulic properties (SHPs), particularly soil water retention capacity and hydraulic conductivity of unsaturated soils, are among the key properties that determine the hydrological functioning of terrestrial systems. Some large collections of SHPs, such as the UNSODA and HYPRES databases, have already existed for more than 2 decades. They have provided an essential basis for many studies related to the critical zone. Today, sample-based SHPs can be determined in a wider saturation range and with higher resolution by combining some recently developed laboratory methods. We provide 572 high-quality SHP data sets from undisturbed, mostly central European samples covering a wide range of soil texture, bulk density and organic carbon content. A consistent and rigorous quality filtering ensures that only trustworthy data sets are included. The data collection contains (i) SHP data, which consist of soil water retention and hydraulic conductivity data, determined by the evaporation method and supplemented by retention data obtained by the dewpoint method and saturated conductivity measurements; (ii) basic soil data, which consist of particle size distribution determined by sedimentation analysis and wet sieving, bulk density and organic carbon content; and (iii) metadata, which include the coordinates of the sampling locations. In addition, for each data set, we provide soil hydraulic parameters for the widely used van Genuchten-Mualem model and for the more advanced Peters-Durner-Iden model. The data were originally collected to develop and test SHP models and associated pedotransfer functions. However, we expect that they will be very valuable for various other purposes such as simulation studies or correlation analyses of different soil properties to study their causal relationships. The data are available at 10.5880/fidgeo.2023.012 (Hohenbrink et al., 2023).

Details

Original languageEnglish
Pages (from-to)4417-4432
Number of pages16
JournalEarth system science data
Volume15
Issue number10
Publication statusPublished - 6 Oct 2023
Peer-reviewedYes

Keywords

ASJC Scopus subject areas