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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 />

Table F1. Environmental variable averages by association – topographic variables <strong>and</strong> percentage substrate (continued).<br />

USNVC<br />

Code Aspect<br />

Slope<br />

Inclination<br />

Nonriverine Forests<br />

Upl<strong>and</strong> Depression Swamp CEGL007403 flat level to basin /<br />

Toporaphic<br />

Position TRMI %Bedrock<br />

%Large Rocks<br />

%Small Rocks<br />

%Min. Soil<br />

%Litter & Duff<br />

%Wood<br />

%Water<br />

%NonVasc<br />

various 35.1 1 0 0 1 92 5 2 3<br />

Coastal Plain Depression Wetl<strong>and</strong> (Red Maple – CEGL006110 flat<br />

depression<br />

level to basin / various 37.1 0 0 0 4 86 4 6 16<br />

Sweetgum – Willow Oak Type)<br />

depression<br />

Coastal Plain Depression Wetl<strong>and</strong> (Swamp Tupelo Type) CEGL006223 flat level to basin /<br />

depression<br />

basin/depression 40.0 0 0 0 1 98 2 0 0<br />

Non-Riverine Saturated Forest<br />

Tidal Herbaceous Marshes<br />

CEGL004644 flat level plain/level/bottom 40.0 0 0 0 1 89 7 3 4<br />

Tidal Freshwater Marsh CEGL004706 flat level to gentle plain/level/bottom 40.0 0 0 0 62 19 0 19 0<br />

Tidal Mesohaline <strong>and</strong> Polyhaline Marsh (Low Salt<br />

Marsh)<br />

CEGL006586 flat level plain/level/bottom 40.0 0 0 0 14 17 0 69 0<br />

Tidal Mesohaline <strong>and</strong> Polyhaline Marsh (Transitional<br />

Marsh)<br />

CEGL006418 flat level to gentle plain/level/bottom 40.0 0 0 0 43 28 0 28 0<br />

Tidal Oligohaline Marsh (Common Reed Tidal Marsh) CEGL004187 flat level plain/level/bottom 40.0<br />

Tidal Oligohaline Marsh (Interior Depression Marsh) CEGL006578 flat level plain/level/bottom 40.0 0 0 0 25 67 0 8 0<br />

Tidal Oligohaline Marsh (Big Cordgrass Type) CEGL004195 flat level plain/level/bottom 40.0<br />

Tidal Oligohaline Marsh (Mixed Forbs Type) CEGL006181 flat level plain/level/bottom 40.0 0 0 0 20 53 0 27 0<br />

Tidal Oligohaline Marsh (Saltmeadow Cordgrass – Olney CEGL006612<br />

Three-Square Low Interior Marsh Type)<br />

Tidal Forests <strong>and</strong> Shrubl<strong>and</strong>s<br />

flat level to gentle plain/level/bottom 40.0 0 0 0 5 71 0 24 0<br />

Salt Scrub CEGL003921 flat level plain/level/bottom 40.0<br />

Tidal Shrub Swamp (Iva Type) CEGL006848 flat level plain/level/bottom 40.0<br />

Tidal Shrub Swamp (Wax Myrtle Type) CEGL004656 flat level plain/level/bottom 40.0<br />

Tidal Bald Cypress Forest/Woodl<strong>and</strong> CEGL004654 flat level plain/level/bottom 40.0 0 0 0 0 9 1 90 0<br />

118

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