Vadose Zone Journal is a unique platform for interdisciplinary research on the vadose zone, a critical part of the Earth's surface extending from the soil's upper layer to the groundwater. This international, peer-reviewed journal publishes diverse content, including original research, reviews, and special sections, spanning numerous disciplines. It disseminates fundamental and applied research, promoting science-based decision-making and sustainable vadose zone management. Topics covered range from fluid flow and climate change impacts to waste disposal, biogeochemical processes, subsurface heterogeneity, and more.

Vadose Zone Journal is ranked Number 1 in Best Earth Science Journals for Soil Science on Research.com.

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Vadose Zone Journal front cover image
Shear strength equation of soils in a wide suction range under various initial void ratios

Shear strength equation is a basic theory for solving many geotechnical engineering problems. Although the shear strength equation has received widespread attention, shear strength of clay under wide suction range and different initial void ratio e conditions cannot be well predicted. A recently published study by Song and Zhang aims to establish a new strength equation applicable to soils within a wide suction range. Read more.

Browse Articles

Open access

Evaluation of a practical approach for field scale moisture flow modeling in heterogeneous media at a semiarid site

  •  6 October 2024

Core Ideas

  • Numerical simulation results of field-scale moisture flow are compared with field observations.
  • Directional dependence of pore-scale tortuosity-connectivity leads to unsaturated K macroscopic anisotropy.
  • Ensemble averaged Richards equation steady-state simulations capture well the central tendency of field data.

Open access

Segmental retention models for representing the hydraulic properties of evolving structured soils

  •  1 October 2024

Core Ideas

  • We show a method for dividing existing retention curves into smooth sub-curves corresponding to pore size classes.
  • To represent an evolving soil structure, we scale the sub-curves and sum them to form a composite retention curve.
  • We estimate the effect of (de)compaction on permeability using the composite retention curve and the Mualem model.
  • We apply the approach to modeled response of soil structure to mechanical compaction and to organic amendments.

Open access

Soil water content estimation by using ground penetrating radar data full waveform inversion with grey wolf optimizer algorithm

  •  12 September 2024

Core Ideas

  • A novel and efficient inversion scheme using GWO for estimating SWC from GPR full waveform data.
  • The proposed scheme was tested on numerical models with noise-free and noisy data and field experimental data.
  • Results show the potential of GPR FWI based on GWO for estimating SWC.

free access

Issue Information

  •  9 September 2024

Graphical Abstract

Issue Information Issue 5, 2024

On the cover: The day that the seed is planted is the first day of the rest of its life. The seedling has moved into its new home, which provides the moisture and nutrition required for germination and growth. This soil environment provides the first step sustaining the plant throughout its life cycle. Photo credit: Connor Sible.

Open access

Joint multiscale dynamics in soil–vegetation–atmosphere systems: Multifractal cross‐correlation analysis of arid and semiarid rangelands

  •  3 September 2024

Core Ideas

  • We show multifractal detrended cross-correlation analysis as a tool to describe joint and complex dynamics.
  • Differences are found in the ecological interaction between arid and semiarid rangelands.
  • Cross-correlated and average univariate analyses provide differences in multifractal parameters.
  • Almeria shows higher multifractality, indicating more complex and variable environmental interactions.
  • Soil water availability patterns influence normalized difference vegetation index and biomass dynamics more in Madrid than in Almeria.

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Open access

The role of hydropedology when aiming for the United Nations Sustainable Development Goals

Core Ideas

  • Linking soil research with the SDG debate favors its recognition in the policy and public arena.
  • Hydropedology is more effective in the above context than separate activities of soil physics or pedology.
  • Innovative modeling and measurement methods, digital mapping, and proximal sensing are needed to vitalize hydropedology.
  • Hydropedological contributions to ecosystem services requires a lean, interdisciplinary, operational, and cost-effective approach.

Open access

Soil water potential: A historical perspective and recent breakthroughs

Core Ideas

  • A historical perspective and recent breakthroughs on soil water potential is provided.
  • Critical analysis of historical definitions of soil water potential is provided to identify their strength and flaws.
  • Fundamental differences between adsorptive and capillarity soil water potentials are clarified.
  • A general soil water potential definition unifying both adsorption and capillarity mechanisms is provided.
  • Practical implications of unified soil water potential definition to fundamental soil properties are illustrated.