Soil Heavy Metal Content from GF-5A and Sentinel-2B Imagery in Yunnan Mining Area

GF-5A satellite imagery achieved test-set R² values of 0.694, 0.720, and 0.722 for Zn, Pb, and Ni inversion, outperforming Sentinel-2B in a high-altitude lead-zinc mining area in Yunnan, China. The dataset, published by Lin Hu on figshare, includes JPG files totaling 90.7 MB and was last updated on April 11, 2026. It results from a study that developed an integrated 'inversion–reliability-source' framework using spectral correction, XGBoost, and SHAP analysis.

Use Cases

• Inverting soil heavy metal concentrations based on GF-5A and Sentinel-2B satellite imagery.
• Comparing the performance of different satellite sensors for environmental monitoring tasks.
• Analyzing pollution source attribution using SHAP-based feature importance and geographic detectors.
• Mapping fine-scale pollution boundaries using Sentinel-2B imagery as described.
• Applying spectral enhancement and band selection techniques to bare-soil imagery.

Strengths

• GF-5A imagery provides more complete coverage in key diagnostic spectral regions, particularly 2200–2450 nm.
• The method achieved specific quantitative accuracy metrics, with test-set R² values reported for Zn (0.694), Pb (0.720), and Ni (0.722).
• Includes an integrated analytical framework combining inversion, uncertainty analysis, and source identification.

Limitations

• Row count and column-level documentation are absent; field semantics must be inferred after download.
• Data is specific to bare soils in a complex high-altitude mining area, which may limit generalizability.
• The dataset size is 90.7 MB, which is relatively small for satellite imagery datasets.

Provenance

Source

figshare, author Lin Hu.

Collection Method

Derived from laboratory spectra and processed GF-5A and Sentinel-2B satellite imagery using a workflow with DS correction, spectral enhancement, Boruta band selection, and XGBoost inversion.

Freshness

Last updated 2026-04-11 16:47:57; freshness should be verified.

Geography

Area around a lead-zinc mining site in Yunnan, China.