Enhancing Digital Soil Mapping products: A framework for user-specific quality assessment considering data-fitness-for-purpose principles

1DBG 2025 |Session K-5.5b www.julius-kuehn.de Enhancing Digital Soil Mapping products: A framework for user-specific quality assessment considering data-fitness-for-purpose principles Markus M¨oller Julius K¨uhn-Institut ·Digitalisation and Artificial Intelligence ·Kleinmachnow, Germany 2DBG 2025 |Session K-5.5b www.julius-kuehn.de FAIRagro.net What is the best way to communicate DSM products? DSM approaches have not yet been established as standard practice in German state geological services for soil information generation. DBG annual conference on 8 September 2023 4DBG 2025 |Session K-5.5b www.julius-kuehn.de What is the best way to communicate DSM products? DSM concepts Definition . . . the creation and population of spatial soil information systems by the use of field and laboratory observational methods coupled with spatial and non-spatial soil inference systems. Digital soil morphometrics . . . aims to yield new insights in soil horizonation and enhance pedological understanding. Minasny, B., McBratney, Alex.B., 2016. Digital soil mapping: A brief history and some lessons. Geoderma 264, 301–311. https://doi.org/10.1016/j.geoderma.2015.07.017 5DBG 2025 |Session K-5.5b www.julius-kuehn.de What is the best way to communicate DSM products? Explainable Machine Learning/Feature engineering https://doi.org/10.1016/j.earscirev.2020.1033590 |https://doi.org/10.1109/ACCESS.2020.2976199 6DBG 2025 |Session K-5.5b www.julius-kuehn.de What is the best way to communicate DSM products? DSM workflow Trustworthiness and Data Quality The accuracy of [spatial] data and data sources is highly associated with trust and with having confidence that the quality of data is sufficient to serve as evidence base for critical decision making. https://doi.org/10.1016/j.envsoft.2016.07.017 Quality assessment 1Are there domain-specific (geodata) quality standards and associated quality elements and metrics? 2Are the metrics suitable to assess the trustworthiness of DSM products? 7DBG 2025 |Session K-5.5b www.julius-kuehn.de (1) Existing domain-specific (geodata) quality standards ISO standard 19157 Data Quality: Degree to which a set of inherent characteristics of data fulfils the requirements [of a potential user]. Data Quality Elements ThematicQuality Accuracy of quantitative attributes and the correctness of non-quantitative attributes and of the classifications of features and their relationships. ISO19157-1, 2023. Geographic information: Data quality. Part 1: General requirements. International Organization for Standardization, Geneva, Switzerland. 8DBG 2025 |Session K-5.5b www.julius-kuehn.de (1) Existing domain-specific (geodata) quality standards Numerical Metrics https://doi.org/10.1007/s10462-023-10570-9 QuantitativeAttribute Accuracy Closeness of the value of a quantitative attribute to a value accepted as or known to be true. ISO19157-1, 2023. Geographic information: Data quality. Part 1: General requirements. International Organization for Standardization, Geneva, Switzerland. ISO19157-3, 202?. Geographic information: Data quality. Part 3: Data quality measures register. International Organization for Standardization, Geneva, Switzerland. Under development. 9DBG 2025 |Session K-5.5b www.julius-kuehn.de (1) DSM workflow example SOC prediction for a Bavarian test site PARAMETRIZATION FEATURE ENGINEERING MODELLING Soil Samples SCMaP-SRC Terrain Attributes RU Importance Testing Set Data Split Sampling Design Machine Learning Training Set RFE Prediction Uncertainty External Validation Accuracy Metrics https://doi.org/10.3390/rs14102295 Questions? Conctact [email protected] DBG annual conference on 8 September 2023