A Preview of Recent A Preview of Recent Land Cover Mapping for Land Cover Mapping for Connecticut Connecticut James D. Hurd James D. Hurd Jason Parent, Anna Chabaeva and Daniel Civco Jason Parent, Anna Chabaeva and Daniel Civco C C enter for enter for L L and use and use E E ducation ducation A A nd nd R R esearch esearch (CLEAR) (CLEAR) Department of Natural Resources Management & Department of Natural Resources Management & Engineering Engineering The University of Connecticut The University of Connecticut U-4087, Room 308, 1376 Storrs Road U-4087, Room 308, 1376 Storrs Road Storrs, CT 06269-4087 Storrs, CT 06269-4087
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A Preview of Recent Land Cover Mapping for Connecticut
A Preview of Recent Land Cover Mapping for Connecticut. James D. Hurd Jason Parent, Anna Chabaeva and Daniel Civco C enter for L and use E ducation A nd R esearch (CLEAR) Department of Natural Resources Management & Engineering The University of Connecticut - PowerPoint PPT Presentation
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A Preview of Recent A Preview of Recent Land Cover Mapping for Land Cover Mapping for
ConnecticutConnecticutJames D. HurdJames D. Hurd
Jason Parent, Anna Chabaeva and Daniel CivcoJason Parent, Anna Chabaeva and Daniel Civco
CCenter for enter for LLand use and use EEducation ducation AAnd nd RResearch esearch (CLEAR)(CLEAR)Department of Natural Resources Management & Department of Natural Resources Management &
EngineeringEngineeringThe University of ConnecticutThe University of Connecticut
- An ongoing project that tracks land cover changes in Connecticut’s landscape over time.- Uses Landsat Satellite imagery to derive a consistent set of land cover maps.- Currently nearing completion of a 2006 update.- With the update, will consist of 5 dates of land cover (1985, 1990, 1995, 2002, 2006) consisting of 12 land cover categories.- Also includes products derived from land cover: forest fragmentation, urban growth, impervious surfaces.
Land Cover andLand Cover andLand Cover ChangeLand Cover Change
Why Land Cover?Why Land Cover?- Land Cover is the basis for understanding our - Land Cover is the basis for understanding our
landscape.landscape.What is where?What is where?
- - Multiple dates of land cover are necessary to Multiple dates of land cover are necessary to understand the nature of landscape change.understand the nature of landscape change.
What did it change to?What did it change to?
- Many landscape models require land cover - Many landscape models require land cover information.information.
You can measure & analyze this
This is a picture
33% 33% developeddeveloped
46% 46% forestforest
5% 5% waterwater
Image to MapImage to MapLandsat
Satellite ImageLand Cover
Map
Landsat 100 footspatial resolution
NAIP 3 footspatial resolution
Image ComparisonImage ComparisonBoth images collected late summer 2006
Change In AgricultureChange In Agriculture1985 to 2006
Agriculture to Agriculture to Developed/Turf & Developed/Turf & GrassGrassAgriculture to Other Agriculture to Other GrassesGrassesNew AgricultureNew Agriculture
Patch Forest – Forest pixels that are isolated from core forest pixels (uses SE2 with repeated dilations).
Forest FragmentationForest Fragmentation
Edge Forest – forest pixels on the edge of large non-forested features (uses SE1 on non-forest pixelswith repeated dilations).Perforated Forest – forest pixels surrounding smallnon-forested features (remaining unlabeledforest pixels).
1985
1990
1995
2002
2006
Connecticut Forest Connecticut Forest FragmentationFragmentation1985 Area
Urban CoreUrban CoreUrban FringeUrban FringeUrban ScatterUrban ScatterUrbanized Open Urbanized Open SpaceSpaceInterior Urbanized OSInterior Urbanized OSPeripheral Open Peripheral Open SpaceSpaceCore Open SpaceCore Open SpaceWaterWaterExcess SlopeExcess Slope
1985 Urban Landscape
1985
1990
1995
2002
2006
URBAN FOOTPRINT = all built-up pixels (urban core, urban fringe, urban scatter) and urbanized open space pixels (urbanized open space, interior urbanized open space, peripheral open space).
Urban Growth AnalysisUrban Growth Analysis
1985
1990
1995
2002
2006
►Development occurring between time periods Development occurring between time periods TT11 and T and T22
► Classification based on location relative to Classification based on location relative to the Tthe T11 urban area urban area InfillInfill: new development occurring within the T: new development occurring within the T11
urbanized open spaceurbanized open space ExtensionExtension: new non-infill development intersecting : new non-infill development intersecting
the Tthe T11 urban footprint urban footprint LeapfrogLeapfrog: new development not intersecting the T: new development not intersecting the T11
urban footprinturban footprint
Urban Growth AnalysisUrban Growth Analysis
Urban Growth AnalysisUrban Growth Analysis
InfillInfillExtensionExtensionLeapfrogLeapfrog
1985to
2006
►Infill - development of a small area surrounded by existing developed land.
►Expansion - the spread of development from existing developed areas.
►Outlying - characterized by a change from undeveloped to developed beyond existing developed areas. Isolated – small developed area surrounded by
undeveloped land. Linear Branching – linear development Clustered Branching – large cluster of developed pixels.
SummarySummaryThe land cover products allow us to quantify
land cover and land cover change in Connecticut over a 21 year period and allow us to visualize how we are impacting our landscape.
The derived products provide us with various perspectives about the state of Connecticut’s landscape.
Land Cover should be available online in the next month or so with the derived products following soon after.
CLEAR.uconn.eduCLEAR.uconn.edu
A Preview of Recent A Preview of Recent Land Cover Mapping for Land Cover Mapping for
ConnecticutConnecticutJames D. HurdJames D. Hurd
Jason Parent, Anna Chabaeva and Daniel CivcoJason Parent, Anna Chabaeva and Daniel Civco
CCenter for enter for LLand use and use EEducation ducation AAnd nd RResearch esearch (CLEAR)(CLEAR)Department of Natural Resources Management & Department of Natural Resources Management &
EngineeringEngineeringThe University of ConnecticutThe University of Connecticut