Tier 4 maps of soil pH at 25 m resolution for the Netherlands

DOI:10.4121/16451739.v1
The DOI displayed above is for this specific version of this dataset, which is currently the latest. Newer versions may be published in the future. For a link that will always point to the latest version, please use
DOI: 10.4121/16451739

Datacite citation style

Anatol Helfenstein; Vera L. Mulder; Gerard B.M. Heuvelink; Joop P. Okx (2021): Tier 4 maps of soil pH at 25 m resolution for the Netherlands. Version 1. 4TU.ResearchData. dataset. https://doi.org/10.4121/16451739.v1
Other citation styles (APA, Harvard, MLA, Vancouver, Chicago, IEEE) available at Datacite

Dataset

This dataset contains maps (GeoTIFFs) of soil pH of six standard depth layers for the Netherlands at 25 m resolution. The six standard depth layers are from 0-5 cm, 5-15 cm, 15-30 cm, 30-60 cm, 60-100cm and 100-200cm. For each of these depth layers, there is a map of mean predictions, the 5th, 50th (median) and 95th quantile, as well as the 90% prediction interval (PI90 = 95th - 5th quantile) and a categorical map of the accuracy thresholds ("none", A, AA and AAA) based on GlobalSoilMap specifications for Tier 4 products. The accuracy thresholds were derived from the PI90, which is a measure of prediction uncertainty. All maps are based on predictions (mean) and estimations (quantiles) using a Quantile Regression Forest model, which was calibrated using 15338 soil pH measurements from the "Bodemkundig Informatie Systeem" (BIS) and 195 covariates (spatially explicit environmental variables of soil forming factors).

History

  • 2021-09-07 first online, published, posted

Publisher

4TU.ResearchData

Format

GeoTIFF (.tif)

Funding

  • This project (WOT-04-013-010) was financed by the Dutch Ministry of Agriculture, Nature and Food Quality: https://research.wur.nl/en/projects/soil-property-mapping-wot-04-013-010

Organizations

Department of Environmental Sciences, Wageningen University and Research

DATA

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