Jiao et al. (2026) Decomposing Long-Term Land-Use Contributions to Relative Runoff Potential Across Five Sub-Catchments in the Kameoka Basin, Japan

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

Identification

• Journal: Land
• Year: 2026
• Date: 2026-09-15
• Authors: Yingnan Jiao, Jingyi Yin, Qin Huang, Junhua Zhang, Shiro Takeda
• DOI: 10.3390/land15091709

Research Groups

• Department of Environmental Science, Kyoto University
• Institute for Future Earth, Kyoto University
• National Institute for Environmental Studies (NIES)

Short Summary

This study examined the impact of long-term land-use changes on catchment-scale runoff potential in five sub-catchments in Japan's Kameoka Basin. The results show that urban expansion can both increase and decrease runoff potential depending on the specific sub-catchment.

Objective

• Investigate the relationship between simultaneous land-use changes and their effects on catchment-scale runoff potential

Study Configuration

• Spatial Scale: Five sub-catchments in the Kameoka Basin, Japan
• Temporal Scale: Approximately 130 years (1890s–2021)

Methodology and Data

• Models used: Area-weighted runoff coefficient (C¯) derived from land-use-specific coefficients assigned with reference to Japanese technical standards
• Data sources: Meiji-period historical topographic maps, Land-Use Subdivision Mesh Data

Main Results

• Urban land increased by 5.1–16.0 percentage points in the sub-catchments
• Net ∆C¯ ranged from −0.004 to +0.037, indicating varying effects on runoff potential
• Three contrasting contribution patterns were observed: structural inertia, dynamic offset, and development-driven increases

Contributions

• This study provides a diagnostic basis for differentiated sub-catchment-scale land management by examining the impact of simultaneous land-use changes on catchment-scale runoff potential.

Funding

• Not specified in the paper

Citation

@article{Jiao2026Decomposing,
  author = {Jiao, Yingnan and Yin, Jingyi and Huang, Qin and Zhang, Junhua and Takeda, Shiro},
  title = {Decomposing Long-Term Land-Use Contributions to Relative Runoff Potential Across Five Sub-Catchments in the Kameoka Basin, Japan},
  journal = {Land},
  year = {2026},
  doi = {10.3390/land15091709},
  url = {https://doi.org/10.3390/land15091709}
}