proximity to roads. Using transportation as a value of 4 allows us to look at habitat
variables near roadways without discrediting the roadways all together. It also allows
there to be development LCLU types with lower ranking. What we assume with this
value is that it is more likely that wildlife will be crossing roads in areas without the other
types of development.
Table 1
LCLU Reclassification Values
LCLU type
Final Reclass Value
transitional
9
water
5
barren
5
residential
1
commercial
1
industrial
1
transportation
4
other developed
3
orchards
6
other agricultural
5
deciduous forest
10
coniferous forest
10
mixed forest
10
forested wetland
10
wetland
10
row crop
6
hay/pasture
5
Note:
the LCLU type descriptions are taken directly from the GIS LCLU layer through the Vermont
Center for Geographic Information (VCGI).
b. Core
Habitat:
The Core Habitat GIS layer was developed by the University of Vermont's spatial
analysis laboratory. It describes patches of unfragmented habitat throughout the state.
Derived from Landsat Thematic Mapper Imagery in conjunction with transportation
information and house site information the dataset describes the presence or absence of
anthropogenic features such as roads, structures, buildings, agricultural lands, and
quarries for each 25 meter grid cell. For purposes of the core habitat project, it was
assumed that the fragmenting features could influence ecological functions of a habitat
patch out to 100 meters.
For purposes of this project, the core habitat data layer was converted from a raster
format into a polygon shape file. This allowed for the calculation of the total acreage of
each unfragmented area. Three classes of core habitat patch size were created in order to
6
Summary :
Table 1 LCLU Reclassification Values LCLU type Final Reclass Value transitional 9 water 5 barren 5 residential 1 commercial 1 industrial 1 transportation 4 other developed 3 orchards 6 other agricultural 5 deciduous forest 10 coniferous forest 10 mixed forest 10 forested wetland 10 wetland 10 row crop 6 hay/pasture 5 Note: the LCLU type descriptions are taken directly from the GIS LCLU layer through the Vermont Center for Geographic Information (VCGI).
Tags :
habitat,lclu,core,forest,alue,other,layer,transportation,information,roads,gis,deelopment,agricultural