Wheat yield resilience metrics for sample 10km x 10km grid cells in England, 2008-2017
Download/Access
By accessing or using this dataset, you agree to the terms of the relevant licence agreement(s). You will ensure that this dataset is cited in any publication that describes research in which the data have been used.
© UK Centre for Ecology & Hydrology, Defra
Users of the data must include the following acknowledgement: Data has been derived from Defra Cereals and Oilseeds Production Survey by UKCEH with the explicit permission of the Department for the Environmental Food and Rural Affairs
This dataset is available under the terms of the Open Government Licence
The data were created under the ASSIST (Achieving Sustainable Agricultural Systems) project by staff at the UK Centre for Ecology & Hydrology to enable exploration of the impacts of agriculture on the environment and vice versa, enabling farmers and policymakers to implement better, more sustainable agricultural practices.
Format
Comma-separated values (CSV)
Spatial information
Temporal information
Provenance & quality
Because a new random sample of farm holdings is drawn each year, few had consecutive data across 10 years. To analyse yield variation over time and account for local spatial variation in farming practices data were therefore aggregated to mean annual yield per 10km x 10km Ordnance Survey grid cell ('hectad'). This also preserves survey respondent anonymity by ensuring that no yield value can be attributed to the location of a single holding (a condition of use for the original Defra survey data, in line with the Agricultural Statistics Act 1979). Resilience metrics were then calculated across the time series (see below). Data included here give these metrics for 315 hectads with at least one sampled holding in each year of the time-series (i.e. the minimum data required to calculate the resilience metrics), although further analyses used only 137 that were deemed to be sufficiently well-sampled to avoid biases relating to sample size. This was based on thresholds for the minimum permissible number of samples per year and the number of years permitted to have this value, to determine which combination retained the maximum number of samples whilst removing the significant correlations between sample size and mean yield and between mean sample size and mean yield over time. A threshold value of no more than one year with a single sample and no more than two years having less than three samples was found to meet achieve this.
Licensing and constraints
This dataset is available under the terms of the Open Government Licence
© UK Centre for Ecology & Hydrology, Defra
Users of the data must include the following acknowledgement: Data has been derived from Defra Cereals and Oilseeds Production Survey by UKCEH with the explicit permission of the Department for the Environmental Food and Rural Affairs
Related
This dataset is included in the following collections
Data from the Achieving Sustainable Agricultural Systems programme (ASSIST)
Correspondence/contact details
Wallingford
Oxfordshire
OX10 8BB
UNITED KINGDOM