National Spatial Data Infrastructure Initiative (NSDI)

Developed by College of the Atlantic GIS Lab, Bar Harbor, Maine

Veg79 is a shapefile that contains vegetation groups.

Column: Veg_type - combines 25 veg communities into 10 landcover types

0 = water, not labeled
1 = rock islands and rock shore edges 0.
2 = salt marsh
salt marsh (15)
3 = urban res., meadow and agriculture 0, old fields & meadows (20)
4 = successional forest and heath Birch-aspen forest (.GT. 10') (9), birch-aspen scrub (10), birch-aspen scrub (21), heath scrub (22).
5 =
6 = fresh marsh and bogs
alder scrub (13), fresh marsh (16), scrub bog (17), sphagnum-sedge bog (18), floating veg (19).
7 = dry coniferous forest spruce-fir forest (1), white pine forest (2), mixed conifer forest (8), mixed hardwood-coniferous forest (14), pitch pine forest (23)
8 = wet coniferous forest hemlock forest (3), northern white cedar forest (4), black spruce-tamarack swamp (7).
9 = deciduous forest northern hardwoods forest (11), red oak forest (12), red maple forest (24).



Column: Veg_num - derived from Veg_code.

0 = developed (D), rock (R) or water (W).
1 = spruce-fir forest
2 = white pine forest (including red pine)
3 = hemlock forest
4 = northern white cedar forest
5 =
6 =
7 = black spruce-tamarack swamp
8 = mixed conifer forest
9 = birch-aspen forest (trees greater than 10 feet)
10 = birch-aspen scrub (trees less than 10 feet high)
11 = northern hardwoods forest
12 = red oak forest
13 = alder scrub
14 = mixed hardwood-coniferous forest
15 = salt marsh
16 = fresh marsh
17 = scrub bog
18 = sphagnum-sedge bog
19 = floating vegetation (spadderdock-water lilly)
20 = old fields and meadows
21 = birch-aspen scrub (trees less than 10 feet high)
22 = heath scrub
23 = pitch pine forest
24 = red maple forest

 

Themes

In_veg_asp - Is a shapefile result of the intersection of the veg79 shapefile and N-aspect.shp shapefile.

N_aspect.shp shapefile contains three columns of data, shape (whether the data is a polygon, line, point), polygon ID (values from 1-562) and gridcode (value either 0 or 1) which will be 0 if not north-facing and 1 if the polygon is north-facing.

Test_elev is a grid of elevations.

Veg_grid is a grid of vegetation groups.