A Link Between GIS and Remote Sensing: Florida Citrus GIS ..._Presentations_and...Florida Citrus GIS...
Transcript of A Link Between GIS and Remote Sensing: Florida Citrus GIS ..._Presentations_and...Florida Citrus GIS...
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Florida Citrus GIS Project
and a
Florida Cropland Remote Sensing Classification
A Link Between GIS and Remote Sensing
Claire Boryan, Geographer
United States Department of Agriculture
National Agricultural Statistics Service
Research and Development Division
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The National Agricultural Statistics ServiceProvider of timely, accurate, and useful statistics
in service to U.S. agriculture
"The Fact Finders of Agriculture."
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Program Cooperators
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Florida citrus industry facts
• 750,000 acres (1170 sq. miles, 304,000 hectares)*
• 80% oranges, 10% grapefruits, 10% specialty*
• Leading producer in world of grapefruits**
• Second, to Brazil, in orange production**
• 90% canned, chilled, or concentrated**
• 80% of U.S. supply**
• $9.13 Billion industry**
• 89,700 jobs**
*NASS/FFO 2004 **UF/IFAS 2000
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Past census methodology
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Florida Commercial Citrus Inventory Now
Maintained Within a GIS
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Screen capture of ArcMap in action
Florida Commercial Citrus Inventory Now
Maintained Within a GIS
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Benefits of the GIS-based citrus census
• More efficient
• Lower cost
– …in the long run
• Increased analytical ability
– Spatial-based queries/summaries
– Other GIS capabilities
• Tracking disease (canker, greening)
• Hurricane analysis (overlay tracks)
• Land cover conversion (urbanization)
• Cartographic capabilities
– Eliminates manual polygon and label redrawing
– Customizable and consistent map layouts
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Additional GIS– Ground truth
Farm Service Agency (FSA) Common Land Unit (CLU) data
FSA CLU 578 Admin Data
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Farm Service Agency (FSA) Data
FSA (CLU) Data Used for Ground Truth Information
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A Merging of Technologies
GIS and Remote Sensing
• Ground Truth Preparation
– ESRI ArcGIS 9.1
• Imagery Preparation
– Leica Geosystems ERDAS Imagine 9.0
• Classification
– Decision tree software
• See5.0
• www.rulequest.com
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Landsat Platform
• Landsat 5 launched 1984 (3 yr design life!)
– Thematic Mapper (TM) Sensor
• Landsat 7 launched 1999 Thematic Mapper
(ETM+) Sensor
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Landsat 7
Gap- Filled Images
Stripes of Missing Data Gap Filled Product
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Florida Panhandle
Imagery Mosaics created from Landsat TM and
Gap Filled Landsat ETM+ scenes
Spring Mosaic
Fall Mosaic
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Florida Peninsula
Imagery Mosaics created from Landsat TM
and Gap Filled ETM+ scenes
Spring Mosaic Fall Mosaic
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Ancillary Data sets
• Cloud Masks
• Date Masks
Cloud Mask Date Mask
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More Ancillary Data sets
• Agricultural Masks
• National Land Cover Data Set (NLCD)
2001
Agricultural Mask (NLCD) 2001
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Classification Overview (See5)
• Derive classification within each analysis district
• Combine analysis districts classification to create a single statewide product
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Post classification enhancements
See5• Possible post processing refinement steps
– Polish
• 20 acre minimum mapping unit works best
– Overlay non agricultural classes with those from ancillary data
• For example: National Land Cover Dataset
Original Polished Ancillary added
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Florida Cropland Data Layer
Error Matrix
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User’s Accuracies
User Accuracies
indicate the
probability that a
pixel from the CDL
classification
actually matches the
ground truth data
and measures
errors of
commission.
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Producer’s
accuracies relate to
the probability that a
ground truth pixel
will be correctly
mapped and
measures errors of
omission.
Producer’s Accuracies
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Santa Rosa and Escambia Counties
Raw Landsat TM Imagery Bands 4,5,3Florida CDL Zoom
of Santa Rosa and Escambia Counties
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Jackson and Calhoun Counties
Raw Landsat TM Imagery Bands 4,5,3Florida CDL Zoom
of Jackson and Calhoun Counties
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Highlands County
Raw Landsat TM Imagery Bands 4,5,3 Florida CDL Zoom of Highlands County
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The Florida Commercial Citrus GIS Product
A Link Between GIS and Remote Sensing
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The Farm Service Agency
Common Land Unit Data
FSA CLU Data 578 Admin Data
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Florida 2004 Cropland Data Layer
Projection: UTM, Zone 17Spheroid: GRS 1980
Datum: NAD83
Corn
Cotton (Upland)
Peanuts
Sorghum
Soybeans
Sugarcane
Fallow
Other Crop/Mixed Forage
Watermelon/Other Fruit/Vegetable
Winter Wheat/Rye/Oats/Milet
Citrus
Cloud
Grass/Pasture/Range
Inactive Sugarcane
NLCD Unconsolidated Shore
NLCD Aquatic Beds
NLCD Bare Rock/Sand Clay
NLCD Barren
NLCD Developed, High Intensity
NLCD Developed, Low Intensity
NLCD Developed, Medium Intensity
NLCD Developed, Open Space
NLCD Emergent Herbacious Wetland
NLCD Scrub/Shrub Wetlands
NLCD Shrub/Scrub
NLCD Woodland
NLCD Woody Wetlands
NLCD Open Water
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Thank You
Claire Boryan, Geographer
United States Department of Agriculture
National Agricultural Statistics Service
Research and Development Division