Albemarle-Pamlico Sounds
LANDSAT Thematic Mapper Data
Type: Extent of
habitat (i.e., area of habitat and whether there has been a decline) and condition
of habitat and sources affecting habitat (i.e., the condition or functionality
of the habitat).
Category: Wetland
Cost: Information not provided.
Description: The North Carolina Division of Coastal Management (DCM)
is developing a coastal area wetlands conservation plan that relies on adequate
knowledge of the location, extent and type of wetlands by watershed in coastal
NC. DCM has developed methods using geographic information systems (GIS) and
existing spatial data to accommodate a limited time schedule and large land
area.
Three primary spatial data layers provide information that are assembled into
the DCM restoration and enhancement site data. These layers are the National
Wetlands Inventory (NWI), county soils (DSL), and classified land use/land cover
from TM satellite imagery. The NWI and DSL data are 1:24,000 scale, vector data.
The imagery is 30 meter resolution, filtered and unfiltered, raster data.
Outcome: Landsat Thematic Mapper Data, in combination with National Wetlands
Inventory (NWI) maps and county soil surveys, were used to assemble DCM wetlands
data. Extracting the most relevant information from each of these layers allowed
DCM to produce the best information about the location and extent of coastal
area wetlands available today.
The systematic geographic search for wetland restoration sites is a powerful
and useful screening tool for identifying sites with the greatest ecological
potential for performing valuable wetland functions. A GIS facilitates the inventory
process and allows complex analyses of diverse ecological functions at the landscape
level. This methodology is designed to be a decision support tool, not a decision
making tool. It provides an improved and ecologically based approach to identifying
wetland and riparian area restoration sites across river basins, physiographic
regions and other large geographic areas. It does not provide a substitute for
field reconnaissance and on-site evaluations by knowledgeable restoration specialists.
Contact: North Carolina DCM GIS Coordinator, PO Box 27687, Raleigh, NC
27611-7687, (919) 733-2293, FAX: (919) 733-1495
Citation: NC CGIA metadata, located at http://cgia.cgia.state.nc.us/cgdb/wtdcmc.html
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