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The Belgian soil organic carbon (SOC) stock maps for topsoils (0-30 cm) were composed of 2 regional SOC stock maps. For the regional maps a different approach was used for agricultural land as compared to forest. The maps are based on digital soil mapping approaches using empirical models calibrated to predict the SOC stock and using covariates that are available at a sufficient resolution at the regional scale. All maps are strongly dependent on the Belgian Soil Map (texture and drainage parameters). The regional maps were compiled at a finer resolution (10m x 10m and 40m x 40m grid cells). Next they were joined (40m x 40m grid cells) and finally scaled up to the required 1 by 1 km grid cells. This was done using the following tools: block statistics (mean), mosaic to new raster (mean), project to raster, block statistics (mean), resample (nearest neighbour) and project raster.

Given the different origin of the individual maps, the uncertainty varies between maps. For instance, a map of the 90% confidence interval of the SOC stocks was produced for agricultural soils in Wallonia based on a Monte Carlo Approach taking into account both the measurement and the model uncertainties. For Flemish forest soils, spatial and analytical uncertainties were taken into account using bootstrapping techniques. For Flemish agricultural soils, the uncertainty reported is the model uncertainty on point estimates for each data point, in which the estimated model parameters are simulated 1000 times as being independent normal distributed variables using their model estimation and standard error as distribution parameters. No additional uncertainty is taken into account for the conversion functions that use the stochastic variables "bulk density".

The SOC stock maps are the first comprehensive maps for Belgium integrating grasslands, croplands and forests. There are two versions of the SOC stock maps for Belgium: 1) resolution of 40m x 40m in the coordinate reference system Lambert72 and 2) resolution of 1km x 1km in the coordinate reference system WGS84. The metadata are available and allow assessing the uncertainties of the stock estimates in the different component maps.

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Veld Waarde
Eigenaar / Contactpunt Afdeling Land en Bodembescherming, Ondergrond, Natuurlijke Rijkdommen (ALBON) - Dienst Land en Bodembescherming
Beheerder Vlaams Planbureau voor Omgeving (VPO), Departement Omgeving, Vlaamse overheid
Laatst gewijzigd 4 mei , 2018, 12:28
Gecreƫerd 19 maart , 2018, 17:51
access_constraints ["Data beschikbaar voor hergebruik volgens de Modellicentie Gratis Hergebruik. Toelichting beschikbaar op https://www.dov.vlaanderen.be/page/gebruiksvoorwaarden-dov-services"]
bbox-east-long 5.710
bbox-north-lat 51.506
bbox-south-lat 50.688
bbox-west-long 2.540
conformity-specification-title VERORDENING (EU) Nr. 1089/2010 VAN DE COMMISSIE van 23 november 2010 ter uitvoering van Richtlijn 2007/2/EG van het Europees Parlement en de Raad betreffende de interoperabiliteit van verzamelingen ruimtelijke gegevens en van diensten met betrekking tot ruimtelijke gegevens
contact-email land@lne.vlaanderen.be
coupled-resource []
dataset-publication-date 2018-01-15
dataset-reference-date [{"type": "creation", "value": "2017-12-06"}, {"type": "publication", "value": "2018-01-15"}]
edition 2017
frequency-of-update asNeeded
gemet-theme Bodem
geographic-description Vlaanderen
license ["Zie 'Overige beperkingen'"]
metadata-date 2018-04-29T20:34:43
metadata-language dut
metadata_request https://metadata.geopunt.be/zoekdienst/srv/dut/csw?outputFormat=application%2Fxml&service=CSW&outputSchema=http%3A%2F%2Fwww.isotc211.org%2F2005%2Fgmd&request=GetRecordById&version=2.0.2&elementsetname=full&id=037427b6-d9ad-43ec-9c1e-b423396266d6
progress completed
resource-type series
responsible-party [{"name": "Databank Ondergrond Vlaanderen (DOV)", "roles": ["distributor"]}, {"name": "Vlaams Planbureau voor Omgeving (VPO), Departement Omgeving, Vlaamse overheid", "roles": ["custodian"]}, {"name": "Service Public de Wallonie, Direction G\u00e9n\u00e9rale de l'Agriculture, des Ressources Naturelles et de l'Environnement (DGO3), D\u00e9partement de l'Etude du Milieu Naturel et Agricole, Direction de la Coordination des Donn\u00e9es, Cellule SIG", "roles": ["custodian"]}]
spatial-data-service-type
spatial-reference-system 31370
spatial_harvester true

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