southern critical
DESCRIPTION
Southern Critical. Southern Critical. Forestland Assessment. Forestland Assessment. Brad Barber Project Manager for SCFA Texas Forest Service. Site productivity †. Three Output Layers. Forest Resource Richness. Forestland Forest patches Riparian areas Wetlands Priority watersheds. - PowerPoint PPT PresentationTRANSCRIPT
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Brad BarberProject Manager for SCFATexas Forest Service
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Forest Resource Richness
Forest Resource Threat
Critical Private Forestland
ForestlandForest patchesRiparian areasWetlandsPriority watersheds
Public water supplyProximity to public landT&E SpeciesSlope
Development levelForest health (Insects and diseases)Wildfire risk
All 13 of above input layers
Site productivity†
† Layer added for Southern Region
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Compendium of maps
Analysis methodology, results, maps, and explanation of significance of private forestland in the South
Summary report
GIS Model
Highlight state-specific issues affecting critical private forestland and its management
Regional and state maps of the three output layers
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National Land Cover Database 1992 2001Cover Classes 41, 42, 43, 91
Cover Classes 41, 42, 43, 52, 90
Layer values: 0, 1
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Use data from Forestland layerOverlay state maintained roads
Layer values: 0, 1
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
<100
100-200
200-300
300-400
400-500
500-600
600-700
700-800
800-900
900-1000
>1000
Layer Value
Layer Values by Patch Size
Patc
h Si
ze (a
cres
)
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USGS National Hydrography DatasetBuffer streams by 25 meters x stream order
Layer values: 0, 1
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Forested wetlandsNational Wetlands Inventory (US Fish and Wildlife)
National Land Cover Database (2001 & 1992)
Preferred source
Fill gaps in NWS data
Layer values: 0, 1
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U.S. Environmental Protection Agency (EPA) data on Impaired Waters within 12-digit, Hydrologic Unit Code (HUC) watersheds
Based on Clean Water Act Section 303(d) lists that show water quality standards impairment or threats to the attainment of beneficial uses or anti-degradation provisions
Layer values: 0, 1
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Protected Areas Database (Conservation Biology Institute)Layer values: <0.5 mile = 1; 0.5-1.0 mile = 0.5; >1 mile = 0
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15-30% slope included
Layer values: 0, 1
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Site ProductivitySSURGO—NRCS Soil Survey Geographic dataPreferredSTATSGO—NRCS State Soil Geographic data†
Fill in gaps in SSURGO
† STATSGO being updated and renamed to Digital General Soil Map of the United States
Layer Value
Layer Values for Site Productivity
Site
Inde
x at
50
year
s
0.33 0.670.0 1.0
<60 ft
60-79
80-95
>95
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U.S. Census Bureau data—1990 and 2000Layer will include those areas where the number of households increased by 1 to 8 per square kilometer between 1990 and 2000
Layer values: 0, 1
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Insect and DiseasesData from the forest health risk mapping effort by USDA Forest Service
Annosus Root DiseaseFusiform RustBeech Bark DiseaseSouthern Pine BeetleGypsy MothBalsam Wooly Adelgid
< 55-1515-25>25
Percent mortality of trees expected over next 15 years
= 0= 0.33= 0.67= 1
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Southern Wildfire Risk Assessment
= 0= 0.11= 0.22= 0.33= 0.44= 0.55= 0.67= 0.78= 0.89= 1.0
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Threatened & Endangered Species
Public Drinking Water Supply
Layer values: 0, 1
Include watersheds (12-digit HUC) in which surface water intake is present and 1-mile buffer surrounding ground water intakes
Layer values: 0, 1
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0 1 2 3 4 5 6 7 8 9 10 11
ForestlandPriority watershedsRiparian areas
Development level
Public drinking water supply
Wildfire risk
Site productivity
WetlandsForest patches
T&E SpeciesProximity to public landsSlope
Forest health
10.1%
9.4%
9.4%
9.0%
8.9%
8.8%
8.2%
7.8%
6.8%
6.6%
6.5%
5.5%
2.9%
Percent Contribution of Each Layer to Overall Composite Output Layer
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Percent contribution of layers to model output(values sum to 100)
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PR
Weighting done by EcoregionNLCD 2001 Mapping Zones
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Forestland
10.1%
PriorityWatersheds
9.4%
PublicWater Supply
8.9%
Riparian Areas
9.4%
Development Level
9.0%
Forest Health
8.8%
Wildfire Risk
8.2%
Site Productivity
7.8%
Wetlands
6.8%
Forest Patches
6.6%
T&E Species
6.5%
Proximity toPublic Land
5.5%
Slope
2.9% Percentages sum to 100
Forestland(10.1%)Slope(2.9%)
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