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Vegetation Classification and Mapping Project Report - USGS

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<strong>USGS</strong>-NPS <strong>Vegetation</strong> <strong>Mapping</strong> Program<br />

Colonial National Historical Park<br />

Appendix K. Key to the vegetation classes 2 at Colonial National Historical Park.<br />

1a <strong>Vegetation</strong> dominated by trees <strong>and</strong> shrubs. ....................................................................................... 2<br />

1b <strong>Vegetation</strong> dominated by herbaceous plants; woody species absent or very<br />

sparse. .............................................................................................................................................. 34<br />

WOODY VEGETATION<br />

2a Woody vegetation dominated by native species in the upper stratum<br />

(exotics may be present, but not dominant). ..................................................................................... 3<br />

2b Woody vegetation (forests or shrubl<strong>and</strong>s) dominated by exotic species in<br />

the uppermost stratum, e.g. golden bamboo (Phyllostachys aurea), tree of<br />

heaven (Ailanthus altissima), Chinese wisteria (Wisteria sinensis),<br />

princesstree (Paulownia tomentosa), Japanese honeysuckle (Lonicera<br />

japonica), or English ivy (Hedera helix). ....................................................................................... 20<br />

3a Upl<strong>and</strong> forest <strong>and</strong> shrubl<strong>and</strong>, not influenced by flooding or groundwater. ....................................... 4<br />

3b Woody vegetation of wetl<strong>and</strong>s. ....................................................................................................... 22<br />

4a Forest with canopy dominated by oaks (Quercus spp.), hickories (Carya<br />

spp.), American beech (Fagus gr<strong>and</strong>ifolia), tuliptree (Liriodendron<br />

tulipifera), <strong>and</strong>/or sweetgum (Liquidambar styraciflua); loblolly pine<br />

(Pinus taeda) may be present in some st<strong>and</strong>s. .................................................................................. 5<br />

4b Forest or shrubl<strong>and</strong> not dominated by oaks (Quercus spp.), hickories<br />

(Carya spp.), American beech (Fagus gr<strong>and</strong>ifolia), or tuliptree<br />

(Liriodendron tulipifera). ................................................................................................................ 15<br />

5a Forest with shrub layer dominated by dense ericaceous (heath) species such<br />

as blueberries (Vaccinium spp.), mountain laurel (Kalmia latifolia), or<br />

huckleberry (Gaylussacia spp.) forming a nearly continuous shrub strata. ...................................... 6<br />

5b Forest not characterized by heath-dominated shrub layer (heaths may be<br />

present, but not dominant). ................................................................................................................ 7<br />

6a Heath species are deciduous; blueberries (Vaccinium spp.) or huckleberries<br />

(Gaylussacia spp.). ..................................... Piedmont / Low Elevation Mixed Oak / Heath Forest<br />

6b Heath species are evergreen; mountain laurel (Kalmia latifolia) dominant<br />

shrub. ......................................................... Piedmont / Coastal Plain Oak – Beech / Heath Forest<br />

7a Forest dominated by mesophytic trees such as tuliptree (Liriodendron tulipifera),<br />

American beech (Fagus gr<strong>and</strong>ifolia), white oak (Quercus alba), northern red oak<br />

(Quercus rubra), bitternut hickory (Carya cordiformis), white ash (Fraxinus<br />

americana), <strong>and</strong> sweetgum (Liquidambar styraciflua); mesic sites on slopes, flats, or<br />

low lying areas. ................................................................................................................................. 8<br />

7b Forest dominated by white oak (Quercus alba), chestnut oak (Quercus prinus),<br />

chinkapin oak (Quercus muehlenbergii), southern red oak (Quercus falcata), or s<strong>and</strong><br />

hickory (Carya pallida); sites submesic to subxeric slopes or low s<strong>and</strong>y ridges. ............................. 9<br />

2 If a vegetation-map class name differs from the vegetation class common name (i.e. Common Name (Parkspecific)<br />

used in Appendix I), the vegetation-map class name follows in brackets.<br />

360

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