Name: Forest Patch Analysis

Display Field: Class

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This dataset depicts forest patches in Vermont. The dataset is reflective of summer 2016 conditions. The forest patch routine is based off of the 2016 high-resolution land cover tree canopy class. Three sizes of forest patches were delineated: small, medium, and large. In general, small patches consist of individual trees or small clumps containing 2-5 trees. Medium patches are generally comprised of 5-20 trees. Large patches contain 20 trees or greater and have a defined core area. The algorithm used to delineate the patches incorporated size, morphology, and perimeter/edge ratio criteria to define the patches. Size alone was not used as a criterion as narrowly configured groups of trees can connect over relatively large areas when viewed from above. One drawback of the processing approach was that the data had to be tiled to accommodate the billions of pixels in the source tree canopy dataset. As a result, artifacts, principally in the way of abrupt patch class changes exist along tile edges. Users should note that due to the size of the dataset basic display and geoprocessing operations can take a considerable amount of time.

Service Item Id: 7c403fed046c48c4b3f3c381e5c13dee

Copyright Text: Developed by the University of Vermont Spatial Analysis Laboratory with funding from: State of Vermont Clean Water Fund, Vermont Agency of Natural Resources, Vermont Agency of Transportation, Lake Champlain Basin Program, and the Vermont Center for Geographic Information.

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0.0

Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: 437517.50339910673
YMin: 204202.77490291753
XMax: 449558.00339927984
YMax: 216098.2749030877
Spatial Reference: 32145  (32145)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: PatchSize
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: <20 Acres
  Label: <20 Acres
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [211, 255, 190, 255]
  Outline:
  N/A
• Value: >=20 Acres
  Label: >=20 Acres
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [38, 115, 0, 255]
  Outline:
  Style: esriSLSSolid
  Color: [110, 110, 110, 255]
  Width: 0
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Class ( type: esriFieldTypeString, alias: Class, length: 20 )
• Acres ( type: esriFieldTypeSingle, alias: Acres )
• PatchSize ( type: esriFieldTypeString, alias: PatchSize, length: 255 )
• Shape_Length ( type: esriFieldTypeDouble, alias: Shape_Length )
• Shape_Area ( type: esriFieldTypeDouble, alias: Shape_Area )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

  Iteminfo   Thumbnail   Metadata