29cd5386-bc2e-4d70-a6a5-0d7dc7513dc6 English ISO/IEC 8859-1 (also known as Latin 1) dataset dataset NERC EDS Environmental Information Data Centre Lancaster Environment Centre, Library Avenue, Bailrigg Lancaster LA1 4AP UK info@eidc.ac.uk https://eidc.ac.uk/ EIDC website The Environmental Information Data Centre (EIDC) is the UK's national data centre for terrestrial and freshwater sciences. information pointOfContact 2026-02-12T13:46:14 UK GEMINI 2.3 WGS 84 Carbon and nitrogen contents of soil organic matter fractions, soil organic carbon, total soil nitrogen, and soil organic matter of 100 topsoil samples from the UKCEH Countryside Survey, Great Britain, 2019-2020 v2 2025-10-10 publication 2025-09-05 creation https://catalogue.ceh.ac.uk/id/29cd5386-bc2e-4d70-a6a5-0d7dc7513dc6 10.5285/29cd5386-bc2e-4d70-a6a5-0d7dc7513dc6 doi: Lebron, I., Reinsch, S., Bentley, L., Cosby, B.J., Emmett, B.A., Keenan, P., Pereira, G., Robinson, D.A. (2025). Carbon and nitrogen contents of soil organic matter fractions, soil organic carbon, total soil nitrogen, and soil organic matter of 100 topsoil samples from the UKCEH Countryside Survey, Great Britain, 2019-2020 v2. NERC EDS Environmental Information Data Centre 10.5285/29cd5386-bc2e-4d70-a6a5-0d7dc7513dc6 Carbon and nitrogen content (g per g soil) of the free-light fraction (LF), the occluded particulate fraction (OF), the mineral associated organic matter fraction (MAOM), the particulate organic matter (POM = LF+OF), soil organic carbon (SOC), total soil nitrogen (TN) and soil organic matter (SOM from loss-on-ignition) of 100 topsoil samples (0-15 cm) from the UKCEH Countryside Survey 2019/20 are presented. Associated and historic soil and vegetation data is available through the Countryside Survey data collection: https://catalogue.ceh.ac.uk/documents/2069de82-619d-4751-9904-aec8500d07e6 Full details about this dataset can be found at https://doi.org/10.5285/29cd5386-bc2e-4d70-a6a5-0d7dc7513dc6 Sabine Reinsch UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk pointOfContact Lebron, I. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk https://orcid.org/0000-0001-8610-9717 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Reinsch, S. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk https://orcid.org/0000-0003-4649-0677 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Bentley, L. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk https://orcid.org/0000-0001-5055-7673 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Cosby, B.J. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk https://orcid.org/0000-0001-5645-3373 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Emmett, B.A. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk https://orcid.org/0000-0002-2713-4389 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Keenan, P. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Pereira, G. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Robinson, D.A. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk https://orcid.org/0000-0001-7290-4867 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk owner NERC EDS Environmental Information Data Centre info@eidc.ac.uk custodian NERC EDS Environmental Information Data Centre info@eidc.ac.uk publisher Soil theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Soil carbon nitrogen Soil organic matter fractionation UKCEH Countryside Survey UKSCAPE topsoil mineral-associated organic matter occluded light fraction otherRestrictions no limitations otherRestrictions This resource is available under the terms of the Open Government Licence otherRestrictions If you reuse this data, you should cite: Lebron, I., Reinsch, S., Bentley, L., Cosby, B.J., Emmett, B.A., Keenan, P., Pereira, G., Robinson, D.A. (2025). Carbon and nitrogen contents of soil organic matter fractions, soil organic carbon, total soil nitrogen, and soil organic matter of 100 topsoil samples from the UKCEH Countryside Survey, Great Britain, 2019-2020 v2. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/29cd5386-bc2e-4d70-a6a5-0d7dc7513dc6 textTable 1000 English utf8 environment 2019-01-01 2020-12-31 -8.648 1.768 49.864 60.861 Comma-separated values (CSV) NERC EDS Environmental Information Data Centre info@eidc.ac.uk distributor https://data-package.ceh.ac.uk/data/29cd5386-bc2e-4d70-a6a5-0d7dc7513dc6 Download the data Download a copy of this data download https://data-package.ceh.ac.uk/sd/29cd5386-bc2e-4d70-a6a5-0d7dc7513dc6.zip Supporting information Supporting information available to assist in re-use of this dataset information dataset dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 Archived Countryside survey topsoil samples (0-15 cm) were used. These were sieved (2 mm) and airdried prior to archiving. Thermo-Gravimetric Analysis was performed in four steps using a LECO TGA701. 10 g of samples were heated from 25 degrees C to 105 degrees C (kept constant for 3 h) to determine the hygroscopic moisture. The mass loss between 105 degrees C and 375 degrees C (kept constant for 15.75 h) was used to calculate the soil organic matter content (SOM), the mass loss between 650 degrees C and 100 degrees C gives information on calcium carbonate content of the soils. Soil organic matter fractions were separated via density fractionation using sodium polytungstene at 1.8 g cm-3). In the first step, the free light fraction (LF-fraction) was separated using 2.5 g archived soil. The pellet was re-suspended, and the occluded fraction was separated and discarded. The residual material was associated with the mineral associated organic matter fraction (MAOM fraction) after re-suspension and cleaning. Two internal standards were used in each batch as well as 10% of replicated samples to account for accuracy and precision. Carbon and nitrogen contents were measured on a subsample of archived soil, and the LF and MAOM fractions using an Elementar Vario-Elemental analyser (Elementaranalysensysteme GmbH, Hanau, Germany). The UKAS accredited method SOP3102 was used. Carbon and nitrogen mass fractions were calculated for the LF and MAOM fractions, and the soil. Mass fractions of the occluded fraction (OF) and the particulate organic matter fraction (POM) were calculated using the mass balance equation. Total soil carbon and MAOM-C are corrected for calcite-C content; LF, OF and POM fractions are not corrected for calcite content because no minerals are expected to be present in organic matter. LF, MAOM, total soil, and SOC (total soil carbon minus calciate-carbon) were corrected for hygroscopic water content. The OF and POM fractions are automatically corrected for hygroscopic water as they are calculated from corrected masses.