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Characterizing, measuring and visualizing forest resources An inadequate treatment by an unqualified presenter.

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Presentation on theme: "Characterizing, measuring and visualizing forest resources An inadequate treatment by an unqualified presenter."— Presentation transcript:

1 Characterizing, measuring and visualizing forest resources An inadequate treatment by an unqualified presenter.

2 Things in this talk Remote Sensing 001 Ways We’re Measuring Forests at UConn Quick Note on Visualization

3 Geospatial Technologies Geographic Information Systems (GIS) Remote Sensing (RS) Global Positioning Systems (GPS) Internet

4 Remote sensing is the art and science of detecting, identifying, classifying, and analyzing the earth’s surface using special sensors onboard airplanes and satellites. And since we’re talking forest rather than trees…

5 Landscape Features Reflect Light Differently Band Value Band Value

6 Examples of RS Data Imagery Land Cover Elevation

7 RS Imagery General reference/Base mapping Visual background to other data Digitize new data Update existing data

8 What is land cover? RS imageLand cover map 39% forest21% developed 16% wetland

9 Land Cover vs Land Use Land Cover: Literally, what is covering the land (forest, wetland, pavement) Land Use: What is planned, practiced or permitted on a given area (commercial, residential, dedicated open space)

10 Things in this talk Remote Sensing 001 Ways We’re Measuring Forests at UConn Quick Note on Visualization

11 Analysis & Characterization Forest cover maps Forest block maps Forest fragmentation analysis Distance from a road analysis Buffer analysis

12 2002 Land cover Forest 56% Water 3% Wetland 4% Other 2% Developed 19% Turf/Grass 4% Grasses/Ag 12%

13 Coniferous Forest Deciduous Forest Forested Wetland Water Non-forest 2002 Land cover: forest only (and water)

14 Town of Coventry: 67% forested 2002 Forest Cover: by town

15 Tolland County: 68% forested 2002 Forest Cover: by county

16 Willimantic Regional Basin: 73% forested 2002 Forest Cover: by watershed

17 Forest Cover: Advantages Easy to understand Total cover relates to watershed research, possible watershed plan goals Can easily fit into “Basic NEMO” educational approach

18 Analysis & Characterization Forest cover maps Forest block maps Forest fragmentation analysis Distance from a road analysis Buffer analysis

19 Forest Block Analysis Isolate forest cover Remove any polygons smaller than the size of interest Block size is key for birds and others –Considerable evidence that powerline corridors and roads reduce the quality of habitat for many species of forest birds in the surrounding habitat –Powerlines appear to be a conduit that brings predators and cowbirds deep into the forest interior

20 Forest Blocks – by Town Town of Coventry

21 Forest Blocks – by County Tolland County

22 Forest Blocks – by Watershed Willimantic Regional Basin

23 Forest Block: Advantages Easy to generate once you have cover data Relates well to specific habitat concerns Allows the important distinction between amount of forest and amount of usable forest for wildlife

24 Analysis & Characterization Forest cover maps Forest block maps Forest fragmentation analysis Distance from a road analysis Buffer analysis

25 Original method developed by Riitters et al. (2000) of the USDA/USFS to assess global forest fragmentation from 1 km land cover data. Adapted by CLEAR for use on Landsat-derived land cover information (30-meter spatial resolution). UConn CLEAR FF Analysis

26 Pixel-by-pixel analysis A moving analysis window (9x9 is shown) is used to look at each center pixel in relation to all the surrounding pixels. Forest Pixel Non-Forest Pixel

27 Core Forest - all surrounding grid cells are forest. Perforated Forest - the interior edge of a forest tract such as would occur around a small clearing or house lot. Edge Forest - grid cell is on the exterior edge of a forest tract such as would occur along a large agricultural field or urban area. Transitional Forest - about half of the surrounding grid cells are forest. Patch Forest - less than 40% of surrounding grid cells are forest. Forest Classes

28 Core Forest - all surrounding grid cells are forest. Perforated Forest - the interior edge of a forest tract such as would occur around a small clearing or house lot. Edge Forest - grid cell is on the exterior edge of a forest tract such as would occur along a large agricultural field or urban area. Transitional Forest - about half of the surrounding grid cells are forest. Patch Forest - less than 40% of surrounding grid cells are forest. Forest Classes

29 Core Forest - all surrounding grid cells are forest. Perforated Forest - the interior edge of a forest tract such as would occur around a small clearing or house lot. Edge Forest - grid cell is on the exterior edge of a forest tract such as would occur along a large agricultural field or urban area. Transitional Forest - about half of the surrounding grid cells are forest. Patch Forest - less than 40% of surrounding grid cells are forest. Forest Classes

30 Core Forest - all surrounding grid cells are forest. Perforated Forest - the interior edge of a forest tract such as would occur around a small clearing or house lot. Edge Forest - grid cell is on the exterior edge of a forest tract such as would occur along a large agricultural field or urban area. Transitional Forest - about half of the surrounding grid cells are forest. Patch Forest - less than 40% of surrounding grid cells are forest. Forest Classes

31 Core Forest - all surrounding grid cells are forest. Perforated Forest - the interior edge of a forest tract such as would occur around a small clearing or house lot. Edge Forest - grid cell is on the exterior edge of a forest tract such as would occur along a large agricultural field or urban area. Transitional Forest - about half of the surrounding grid cells are forest. Patch Forest - less than 40% of surrounding grid cells are forest. Forest Classes

32 Forested area: 1,886,426 acres = 59.3% of CT 2002 Forest Cover Map

33 Core Forest: 576,764 acres = 18.1% of CT ( 9x9 analysis window ) Forest Fragmentation Map 2002

34

35 Forest Blocks – by Town Developed2672 Non-forest5098 Water546 Core/Interior Forest3461 Perforated Forest4876 Edge Forest5724 Transitional Forest1780 Patch Forest548

36 Forest Blocks – by County Developed32439 Non-forest47377 Water6065 Core/Interior Forest57771 Perforated Forest50610 Edge Forest53491 Transitional Forest14505 Patch Forest5490

37 Forest Blocks – by Watershed Developed16372 Non-forest20325 Water3209 Core/Interior Forest30216 Perforated Forest29549 Edge Forest31042 Transitional Forest7780 Patch Forest2325

38 Forest Frag: Advantages Provide data about quality as well as quantity of forest Can be run at different scales/grid sizes depending on concerns Tells you something about pattern of the forested landscape and its suitability for habitat

39 Forest Cover all based on the same input data (land cover) best use(s) for each??? Forest CoverForest BlocksForest Fragmentation

40 The Forest Frag Wizard!

41 There are many other Forest Fragmentation tools out there

42 Analysis & Characterization Forest cover maps Forest block maps Forest fragmentation analysis Distance from a road analysis Buffer analysis

43 A Road Runs Through It A nationwide study by Foreman (2000) estimates that 22% of total land area is affected ecologically by roads (within 100m of roads). This is further supported by Riitters & Wickham (2003). A study in Massachusetts along Rte. 2 by Foreman & Deblinger (2000) reports that the maximum distance that could be directly impacted by roads is up to 300m (984ft).

44 11% of Connecticut forest is within 100 ft of roads 29% of Connecticut forest is within 300 ft of roads 52% of Connecticut forest is within 600 ft of roads 100ft300ft600ft

45 100 feet 5400 feet Distance of Forest From Roads A nationwide study by Foreman (2000) estimates that 22% of total land area is affected ecologically by roads (within 100m of roads).

46 Analysis & Characterization Forest cover maps Forest block maps Forest fragmentation analysis Distance from a road analysis Buffer analysis

47 Land Cover Within Buffers

48 100 ft200 ft300 ft

49 What we measured “Natural Vegetation” Developed Turf & Grass Other Grasses & Ag. Deciduous Forest Coniferous Forest Water Forest Wetland Non-forested Wetland Tidal Wetland Barren Utility Right-of-way

50 25 Basins with greatest Natural Vegetation loss (percent) 1985-2002

51 Combined Indicators of Stream Health Stream Health% Impervious Watershed % Natural Veg. 100 ft riparian buffer Excellent<= 6%>= 65% Good<=10%>=60% Fair10-25%40-60% Poor>25%<40% After Goetz et al., 2003

52 Visualization

53 Stupid PPT & Photoshop Tricks

54 Economic modeling

55 Web Tools

56

57

58

59 Build Out Analysis ArcGIS and Scenario360

60 Potential New Homes

61 Google Earth Residential buildout analysis

62 Are you insinuatingthat my talk wasn’tall it was supposedto be??!


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