Date (Publication)

2025-10-10

Date (Creation)

2025-09-05

Citation identifier

https://catalogue.ceh.ac.uk/id/29cd5386-bc2e-4d70-a6a5-0d7dc7513dc6

Citation identifier

doi: / 10.5285/29cd5386-bc2e-4d70-a6a5-0d7dc7513dc6

Other citation details

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

Point of contact

Organisation name	Individual name	Electronic mail address	Role
UK Centre for Ecology & Hydrology	Sabine Reinsch	enquiries@ceh.ac.uk	Point of contact
UK Centre for Ecology & Hydrology	Lebron, I.	enquiries@ceh.ac.uk	Author
UK Centre for Ecology & Hydrology	Reinsch, S.	enquiries@ceh.ac.uk	Author
UK Centre for Ecology & Hydrology	Bentley, L.	enquiries@ceh.ac.uk	Author
UK Centre for Ecology & Hydrology	Cosby, B.J.	enquiries@ceh.ac.uk	Author
UK Centre for Ecology & Hydrology	Emmett, B.A.	enquiries@ceh.ac.uk	Author
UK Centre for Ecology & Hydrology	Keenan, P.	enquiries@ceh.ac.uk	Author
UK Centre for Ecology & Hydrology	Pereira, G.	enquiries@ceh.ac.uk	Author
UK Centre for Ecology & Hydrology	Robinson, D.A.	enquiries@ceh.ac.uk	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

GEMET - INSPIRE themes, version 1.0

• Soil

Access constraints

Other restrictions

Other constraints

no limitations

Use constraints

Other restrictions

Other constraints

This resource is available under the terms of the Open Government Licence

Use constraints

Other restrictions

Other constraints

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

Spatial representation type

Text, table

Distance

1000  urn:ogc:def:uom:EPSG::9001

Language

English

Character set

UTF8

Topic category

• Environment

Begin date

2019-01-01

End date

2020-12-31

Unique resource identifier

WGS 84

Distribution format

Name	Version
Comma-separated values (CSV)

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
NERC EDS Environmental Information Data Centre		info@eidc.ac.uk	Distributor

Hierarchy level

Dataset

Other

dataset

Statement

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.

Metadata

File identifier

29cd5386-bc2e-4d70-a6a5-0d7dc7513dc6 XML

Metadata language

English

Character set

8859 Part 1

Hierarchy level

Dataset

Hierarchy level name

dataset

Date stamp

2025-10-10T15:47:39

Metadata standard name

UK GEMINI

Metadata standard version

2.3

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS Environmental Information Data Centre		info@eidc.ac.uk	Point of contact