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README.md

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-license: cc-by-4.0
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+---
+license: cc-by-4.0
+tags:
+- soil
+- agriculture
+- remote-sensing
+- earth-observation
+- geospatial
+- gis
+- environment
+- open-data
+- spectroscopy
+- murcia
+- spain
+pretty_name: Open Soil Nutrient Dataset – Murcia, Spain (2000–2020)
+---
+This dataset contains open-access soil nutrient maps for the Region of Murcia, Spain, produced by Siora. 
+It provides high-resolution (30 m) spatial data for five key soil variables: Nitrogen (N), Phosphorus (P), Potassium (K), Organic Carbon (OC), and pH. 
+Three time steps are included: 2000, 2010, and 2020, allowing comparisons of soil fertility changes across two decades. 
+
+Each package includes:
+- GeoTIFF raster files with nutrient concentrations (mg/kg)  
+- Preview PNGs for quick visualization  
+- Metadata JSON with technical specifications  
+- A README with methodology notes  
+- CC-BY 4.0 license  
+
+These maps are derived from satellite reflectance spectroscopy combined with auxiliary variables such as terrain and climate, calibrated against reference laboratory methods (ISO and USDA standards).  
+The dataset is intended for use in agronomic research, precision agriculture trials, environmental monitoring, and geospatial modeling.  
+
+For citation, please use DOI: 10.5281/zenodo.16889684.
+
+## Contact
+Visit siora.ai or email [email protected] for questions or custom analysis