Henrys, P.A.; Keith, A.M.; Robinson, D.A.; Emmett, B.A.

Model estimates of topsoil pH and bulk density [Countryside Survey]

Countryside Survey topsoil pH and bulk density (g cm-3) data is representative of 0 - 15 cm soil depth. Topsoil pH was measured using 10g of field moist soil with 25ml de-ionised water giving a ratio of soil to water of 1:2.5 by weight; bulk density was estimated by making detailed weight measurements throughout the soil processing procedure. For topsoil pH and bulk density data, a total of 2614 cores from 591 1km x 1km squares across Great Britain were collected and analysed in 2007. Please see Emmett et al. 2010 for further details of sampling and methods (http://nora.nerc.ac.uk/id/eprint/5201/1/CS_UK_2007_TR3%5B1%5D.pdf).

Estimates of mean values within selected habitats and parent material characteristics across GB were made using CS data from 1978, 1998 and 2007 using a mixed model approach. Please see Scott, 2008 for further details of similar statistical analysis (http://nora.nerc.ac.uk/id/eprint/5202/1/CS_UK_2007_TR4%5B1%5D.pdf). The estimated means of habitat /parent material combinations using 2007 data are modelled on dominant habitat and parent material characteristics derived from the Land Cover Map 2007 and Parent Material Model 2009, respectively. The parent material characteristic used was that which minimised AIC in each model (see Dataset Documentation).

The Countryside Survey looks at a range of physical, chemical and biological properties of the topsoil from a representative sample of habitats across the UK. Countryside Survey soils data are freely available under licence from the Environmental Information Data Centre catalogue.

Publication date: 2012-03-26

Get the data

This dataset is made available under the terms of the Open Government Licence

Format of the data: ESRI Shapefile format

You must cite: Henrys, P.A.; Keith, A.M.; Robinson, D.A.; Emmett, B.A. (2012). Model estimates of topsoil pH and bulk density [Countryside Survey]. NERC Environmental Information Data Centre. https://doi.org/10.5285/5dd624a9-55c9-4cc0-b366-d335991073c7


© UK Centre for Ecology & Hydrology. Contains British Geological Survey materials © NERC 2014. Contains Ordnance Survey data © Crown copyright and database right 2007.


Study area

Provenance & quality

Data used are taken from the Countryside Survey Soils Report (Emmett et al. 2010) which can be found at http://nora.nerc.ac.uk/id/eprint/9354/1/CS_UK_2007_TR9.pdf

Areas, such as urban and littoral rock, are not sampled by CS and therefore have no associated data. Also, in some circumstances sample sizes for particular habitat / parent material combinations were insufficient to estimate mean values.


This dataset is included in the following collections

Model estimates of topsoil properties [Countryside Survey]


JONES, R. A., BROPHY, P. M., MITCHELL, E. S., & WILLIAMS, H. W. (2016). Rumen fluke (Calicophoron daubneyi) on Welsh farms: prevalence, risk factors and observations on co-infection with Fasciola hepatica. Parasitology, 144(2), 237-247 https://doi.org/10.1017/s0031182016001797
Beamish, D. (2015). Relationships between gamma-ray attenuation and soils in SW England. Geoderma, 259–260, 174–186. https://doi.org/10.1016/j.geoderma.2015.05.018

Supplemental information

Emmett, B.A., Reynolds, B., Chamberlain, P.M., Rowe, E., Spurgeon, D., Brittain, S.A., Frogbrook, Z., Hughes, S., Lawlor, A.J., Poskitt, J., Potter, E., Robinson, D.A., Scott, A., Wood, C., Woods, C. (2010). Countryside Survey: Soils Report from 2007. Technical Report No. 9/07. NERC/Centre for Ecology & Hydrology 192pp. (CEH Project Number: C03259).
Scott, W.A. (2008). Countryside Survey: Statistical Report. Technical Report No. 4/07. NERC/Centre for Ecology & Hydrology.

Correspondence/contact details

Keith, A.M.
UK Centre for Ecology & Hydrology


Henrys, P.A.
Centre for Ecology & Hydrology
Keith, A.M.
Centre for Ecology & Hydrology
Robinson, D.A.
Centre for Ecology & Hydrology
Emmett, B.A.
Centre for Ecology & Hydrology

Other contacts

NERC EDS Environmental Information Data Centre
NERC Environmental Information Data Centre

Additional metadata

Topic categories
Broad Habitat,  Countryside Survey,  Parent Material Model,  Soil Soil Acidity,  Soils
Spatial representation type
Spatial reference system
OSGB 1936 / British National Grid
Last updated
25 June 2021 18:34