Li et al. (2026) Depth-Dependent Effects of Dominant Tree Species on Soil Hydraulic Conductivity

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Forests
• Year: 2026
• Date: 2026-01-07
• Authors: Qiwen Li, Honggeun Lim, Hyung Tae Choi, Byoungki Choi, Sooyoun Nam
• DOI: 10.3390/f17010077

Research Groups

[Information not provided in the paper text.]

Short Summary

This study quantified the depth-dependent contribution of four major tree species groups to saturated hydraulic conductivity (Ks) across 5297 sites in Korea, finding that species effects are significant in topsoil but diminish in subsoil where environmental factors dominate.

Objective

• To quantify the independent contribution of dominant tree species to saturated hydraulic conductivity (Ks) at different soil depths (10 cm and 30 cm) in forest ecosystems, adjusting for environmental confounding.

Study Configuration

• Spatial Scale: 5297 sites across Korea.
• Temporal Scale: A spatial survey/snapshot of Ks and species effects; no explicit temporal dynamics studied.

Methodology and Data

• Models used: Inverse probability weighting (for environmental covariate adjustment).
• Data sources: Field measurements of saturated hydraulic conductivity (Ks) and dominant tree species groups (Pinus densiflora, oak species, other conifers, and other broadleaf species) at 10 cm and 30 cm soil depths from 5297 sites in Korea.

Main Results

• The influence of vegetation on saturated hydraulic conductivity (Ks) is fundamentally depth-dependent.
• In the topsoil (10 cm) layer, the "other broadleaf species" group exhibited significantly higher Ks than the other groups, suggesting a consistent association with enhanced surface permeability.
• In the subsoil (30 cm) layer, direct species effects on Ks diminished.
• Subsoil hydrological functions were primarily governed by complex interactions with environmental factors rather than species traits alone.

Contributions

• Quantifies the independent contribution of dominant tree species to saturated hydraulic conductivity (Ks), adjusting for environmental confounding, which was previously challenging.
• Highlights the depth-dependent nature of species effects on Ks, specifically distinguishing between topsoil and subsoil influences.
• Provides insights for forest management strategies, suggesting species selection is effective for managing surface infiltration but subsoil hydrological functions are constrained by site-specific environmental contexts.

Funding

[Information not provided in the paper text.]

Citation

@article{Li2026DepthDependent,
  author = {Li, Qiwen and Lim, Honggeun and Choi, Hyung Tae and Choi, Byoungki and Nam, Sooyoun},
  title = {Depth-Dependent Effects of Dominant Tree Species on Soil Hydraulic Conductivity},
  journal = {Forests},
  year = {2026},
  doi = {10.3390/f17010077},
  url = {https://doi.org/10.3390/f17010077}
}