Fig 1.
Distribution of the 68 GB urban centres.
These comprise 59 in England, 3 in Wales, and 6 in Scotland. Urban centres are listed in alphabetical order. The outline of the GB map was from www.pixabay.com and used under a CC-BY-4.0 licence.
Fig 2.
Project workflow.
Fig 3.
Parallel coordinate plot showing all the selected GB urban centres in descending order of their combined green attribute ranking (based on the PCA)–with Exeter in the top position.
The chart also highlights the top 5 ranking urban centres (in blue), the bottom five ranking urban centres (in red), and the ranks for individual green attributes. OSGS = OS Greenspace.
Table 1.
GB urban centres and their green attribute scores in alphabetical order.
Fig 4.
Urban centres with the five highest and five lowest NDVI values.
The inset maps show the location of the corresponding urban centre in Great Britain. Map boundaries for the NDVI plots were generated in QGIS using the CDRC national-level geodata packs [32]. The figure is licensed under a CC BY 4.0 License.
Fig 5.
Quadrat scatterplot showing the correlation datapoints, highlighting the within and between urban centre differences in mean NDVI values for both urban centres and the 1 km radii.
Fig 6.
Correlation scatter plots for (a) population size and mean NDVI for urban centres; (b) population size and mean NDVI for 1 km radius; (c) population size and tree coverage; and (d) population size and area of OS Greenspace (OSGS). N.S. = not significant.
Fig 7.
Correlation scatter plots for (a) urban centre area (m2) and mean NDVI for urban centres; (b) urban centre area and mean NDVI for 1 km radius; (c) urban centre area and tree coverage, and (d) urban centre area and area of OS Greenspace (OSGS). N.S. = not significant.
Fig 8.
Correlation scatter plot for IMD average rank and PCA greenness (combined green attribute scores) for English urban centres only.