Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

Contiguous Grasslands: Pennsylvania, 2006

This raster dataset has been created using NPennsylvania Land Cover dated 1992N developed by the EROS Data Center for EPA Federal Region III (see metadata entitled NLand Cover 1992 EPA Federal Region III.pdfN) and Landscape Blocks as originated by The Nature Conservancy. Using an inside buffer of 18 meters on the Landscape Blocks a new shapefile was created in order to create a 30 meter area between the blocks to represent roads. Grasslands vegetation cover (Hay/Pasture) from the 1992 land Cover was reclassified and then the road buffered landscape blocks were combined with the raster to assign a value of N0N to areas in the Grasslands land cover that overlap with the road buffers. Acreage of the grasslands vegetation was calculated and the data was reclassified based on conservation value as follows: Acreage Conservation Value 0-25 0 25-160 1 160-250 3 250-400 4 >400 5 Conservation values were determined by experts gathered by Natural Lands Trust through SmartConservation. This data set is one of several that have been combined to create an overall terrestrial resources conservation value raster for the expanded piedmont ecoregion. Therefore the values were determined as a relative rank, comparable in value only to the other input terrestrial resources data. Conservation value ranges from 1 - 10 with 10 being the highest value.
Pennsylvania Spatial Data Access (PASDA)
Pennsylvania, United States
Imagery and Base Maps, Environment, Grasslands, Terrestrial resources, and Vegetation
Contributed by:
Penn State
More details at