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://www.countrysidesurvey.org.uk/outputs/technical-reports). 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://www.countrysidesurvey.org.uk/outputs/technical-reports). 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). 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. 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 can be downloaded upon registration and acceptance of license agreement at http://www.countrysidesurvey.org.uk/data.html

Publication date: 2012-03-26

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

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


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This dataset is cited by:

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


Data used are taken from the Countryside Survey Soils Report (Emmett et al. 2010) which can be found at http://www.countrysidesurvey.org.uk/outputs/technical-reports


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

Point Of Contact
Keith, A.M.
Centre for Ecology & Hydrology
Environmental Information Data Centre
NERC Environmental Information Data Centre
Environmental Information Data Centre


Spatial representation type
Spatial reference system
OSGB 1936 / British National Grid


Topic categories
Other keywords
Broad Habitat
Countryside Survey
Parent Material Model
Soil Acidity
CEH Topic
Parr Section

Dataset identifiers



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