Host map of Ash trees in Great Britain
This is an Ash (Fraxinus excelsior) host map for Great Britain at the 1 km x 1 km scale. The units are in terms of ha or ash per 1km x 1km grid square. There are 100 ha in 1km x 1 km, so this can be thought of as a percent. It was created generating a 20m x 20m land use layer based on the UKCEH Land Cover Map for 2019, deriving areas of broadleaved tree cover for each cell of the land use layer and estimating the percentage of ash within broadleaf, which were assigned dependent on land use and region (see more details about the methods in data preparation and processing activities). The percentage of ash and area of broadleaf trees were combined to give an area of ash for each land use in cell and this was aggregated (summed) across all land use types to give a 1km by 1km ash area map.
| Item Type | Data Collection |
|---|---|
| Creators | Brown, Nathan, Alonso-Chavez, Vasthi, Milne, Alice, Parnell, S. |
| Keywords | forest land use; Fraxinus excelsior; land cover mapping; geographical distribution |
| Project | SMARTIES: Surveillance and Management of multiple Risks to Treescapes: Integrating Epidemiology and Stakeholder behaviour, Growing Health [ISP], AgZero+, Growing Health (WP3) - bio-inspired solutions for healthier agroecosystems: Discovery landscapes |
| Date | 4 October 2023 |
| Geographic coverage | Great Britain Great Britain |
| Additional information | ORCID IDs - Vasthi Alonso Chavez https://orcid.org/0000-0003-3506-7603 - Nathan Brown https://orcid.org/0000-0003-3590-0538 - Alice E. Milne https://orcid.org/0000-0002-4509-0578 - Stephen Parnell https://orcid.org/0000-0002-3039-1159 References Brewer, A. and Ditchburn, B. (2013) ‘NFI Preliminary Report: NFI preliminary estimates of quantities of broadleaved species in British woodlands , with special focus on ash’, National Forest Inventory, Forestry Commission. Available at: http://www.forestry.gov.uk/website/forstats2014.nsf/LUContents/1A5CF787A913E26E80257BE300593B98. Carey, P. D. et al. (2008) Countryside Survey: UK Results from 2007. NERC/Centre for Ecology & Hydrology. Forestry Commission (2003) National inventory of woodland and trees (1995-99), Forest Research. Available at: http://www.forestry.gov.uk/pdf/nigreatbritain.pdf/$FILE/nigreatbritain.pdf. Herrmann, D. et al. (2017) Copernicus Land Monitoring Service – High Resolution Layer Forest 2015 [data]. European Environment Agency. Available at: https://land.copernicus.eu/pan-european/high-resolution-layers/forests. Hijmans, R. J. (2022) ‘terra: Spatial Data Analysis. R package version 1.6-47’. Available at: https://cran.r-project.org/package=terra. Langanke, T. (2019) Copernicus Land Monitoring Service – High Resolution Layer Small Woody Features – 2015 reference year. European Environment Agency. Available at: https://land.copernicus.eu/pan-european/high-resolution-layers/small-woody-features. Maskell, L. et al. (2013) ‘Distribution of Ash trees (Fraxinus excelsior) in Countryside Survey data. Centre for Ecology and Hydrology, Wallingford’, 2013(January), pp. 1–19. Available at: http://www.countrysidesurvey.org.uk/sites/default/files/pdfs/Distribution of Ash trees in CS_9thJan2013.pdf. Monteiro, M. V., Handley, P. and Doick, K. J. (2020) ‘An insight to the current state and sustainability of urban forests across Great Britain based on i-Tree Eco surveys’, Forestry, 93(1), pp. 107–123. doi: 10.1093/forestry/cpz054. Morton, R. D. et al. (2020) Land Cover Map 2019 (20m classified pixels, GB) [Data set]. NERC Environmental Information Data Centre. Available at: https://doi.org/10.5285/643EB5A9-9707-4FBB-AE76-E8E53271D1A0. NFI (2020) National Forest Inventory woodland map 2018 [data]. Forestry Commission. Available at: https://data-forestry.opendata.arcgis.com/datasets/67b8a420316940b593c835685388be01_0. Pebesma, E. (2004) ‘Multivariable geostatistics in S: the gstat package’, Computers & Geosciences, pp. 683–691. Pebesma, E. (2018) ‘Simple Features for R: Standardized Support for Spatial Vector Data’, The R Journal, 10(1), pp. 439–446. doi: 10.32614/RJ-2018-009. |
| Publisher | Rothamsted Research |
| Digital Object Identifier (DOI) | 10.23637/rothamsted.98y37 |
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subject - Other
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- Available under Creative Commons: Attribution 4.0
description - image/tiff
- folder_info
- 1MB

