Table 4 Viable tree species for vegetation barriers in the United Kingdom, with trait-specific information relevant to air pollution mitigation at roadsides (to be used in conjunction with Table 3).
Plant species | Morphology | Successional status | Tolerances | Emissions | |||
|---|---|---|---|---|---|---|---|
Mature size | Canopy density | Drought | Salt | bVOCs | Pollen | ||
Acer buergerianum | Large | Dense | – | Moderately tolerant | Yes | Low | Moderate |
Acer campestre | Medium | Dense | Early | Moderately tolerant | Yes | Low | Moderate |
Acer platanoides | Large | Dense | Late | Moderately tolerant | No | Low | High |
Acer pseudoplatanus | Large | Dense | Late | Moderately sensitive | No | Low | High |
Acer rubrum | Large | Moderate | Late | Moderately tolerant | Yes | Low | High (var.) |
Acer tataricum | Medium | Moderate | Late | Tolerant | Yes | Low | Moderate |
Acer tataricum subsp. ginnala | Small | Dense | Late | Moderately tolerant | Yes | Low | Moderate |
Ailanthus altissima | Massive | Moderate | – | Tolerant | Yes | Low | Moderate (var.) |
Alnus glutinosa | Large | Open | Early | Moderately sensitive | Yes | Low | High |
Alnus incana | Large | Open | Early | Moderately sensitive | Yes | Low | High |
Alnus × spaethii | Large | Moderate | Early | Moderately sensitive | Yes | Low | High |
Amelanchier arborea | Medium | Moderate | – | Moderately sensitive | Yes | Low | Low |
Celtis australis | Large | Moderate | Early | Tolerant | Yes | Low | Moderate |
Celtis occidentalis | Large | Moderate | Early | Moderately tolerant | No | Low | Moderate |
Crataegus monogyna | Small | Dense | Early | Tolerant | Yes | Low | Low |
Elaeagnus angustifolia | Medium | Moderate | Early | Tolerant | Yes | Low | High |
Eucommia ulmoides | Large | Moderate | – | Tolerant | Yes | Low | High (var.) |
Ginkgo biloba | Large | Moderate | – | Tolerant | Yes | High | Moderate (var.) |
Gleditsia triacanthos | Large | Open | Early | Tolerant | Yes | Low | Moderate (var.) |
Hippophaë salicifolia | Small | Moderate | – | Moderately tolerant | Yes | Low | Moderate (var.) |
Koelreuteria paniculata | Large | Moderate | Early | Tolerant | Yes | Low | Low |
Liquidamber styraciflua | Large | Moderate | Early | Moderately tolerant | Yes | High | Moderate |
Metasequoia glyptostroboides | Massive | Moderate | Early | Moderately tolerant | No | Low | Low |
Pinus nigra | Massive | Dense | Early | Tolerant | Yes | Low | Low |
Pinus pinaster | Massive | Dense | Early | Moderately tolerant | Yes | Low | Low |
Pinus pinea | Large | Dense | – | Tolerant | Yes | Low | Low |
Pinus radiata | Massive | Dense | – | Moderately tolerant | Yes | Low | Low |
Pinus strobus | Massive | Dense | – | Moderately sensitive | No | Low | Low |
Pinus sylvestris | Massive | Moderate | Early | Tolerant | No | Low | Low |
Pinus wallichiana | Massive | Moderate | – | Moderately sensitive | No | Low | Low |
Platanus × hispanica | Massive | Moderate | – | Moderately tolerant | Yes | High | High |
Populus nigra | Massive | Moderate | Early | Sensitive | Yes | High | High (var.) |
Prunus avium | Large | Moderate | Early | Moderately sensitive | No | Low | Low |
Pyrus calleryana | Medium | Dense | – | Tolerant | Yes | Low | Low |
Quercus × bimondorum | Medium | Dense | – | Moderately tolerant | Yes | High | High |
Quercus castaneifolia | Massive | Dense | Early | Moderately tolerant | Yes | High | High |
Quercus cerris | Massive | Moderate | Early | Tolerant | Yes | High | High |
Quercus coccinea | Massive | Moderate | Early | Tolerant | Yes | High | High |
Quercus frainetto | Massive | Moderate | Early | Tolerant | Yes | High | High |
Quercus × hispanica | Massive | Moderate | – | Tolerant | Yes | High | High |
Quercus ilex | Large | Dense | – | Tolerant | Yes | High | High |
Quercus palustris | Large | Moderate | Early | Tolerant | Yes | High | High |
Quercus petraea | Massive | Moderate | – | Moderately tolerant | Yes | High | High |
Quercus phellos | Large | Dense | – | Moderately tolerant | Yes | High | High |
Quercus robur | Massive | Moderate | Early | Moderately tolerant | Yes | High | High |
Quercus rubra | Massive | Moderate | Early | Moderately sensitive | Yes | High | High |
Quercus suber | Large | Dense | – | Tolerant | Yes | High | High |
Quercus × turneri | Medium | Dense | – | Moderately tolerant | Yes | High | High |
Rhus typhina | Small | Moderate | Early | Moderately tolerant | Yes | Low | High (var.) |
Robinia pseudoacacia | Large | Open | Early | Tolerant | Yes | Low | Moderate |
Sorbus intermedia | Medium | Moderate | – | Moderately tolerant | Yes | Low | Low |
Sorbus latifolia | Large | Moderate | Early | Tolerant | Yes | Low | Low |
Styphnolobium japonicum | Large | Moderate | Early | Moderately tolerant | Yes | High | Low |
Taxodium distichum | Massive | Moderate | – | Moderately sensitive | Yes | Low | High |
Taxus baccata | Large | Dense | Late | Tolerant | No | Low | High (var.) |
Thuja plicata | Massive | Dense | Late | Moderately tolerant | No | Low | High |
Tilia cordata | Massive | Moderate | Late | Moderately sensitive | No | Low | Moderate |
Tilia × europaea | Massive | Moderate | Late | Moderately sensitive | No | Low | Moderate |
Ulmus ‘New Horizon' | Large | Moderate | Early | Moderately tolerant | No | Low | – |
Ulmus ‘Rebella' | Large | Moderate | – | Moderately tolerant | No | Low | – |
Zelkova serrata | Large | Moderate | Early | Moderately tolerant | Yes | Low | High |