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Name: Tree_Canopy_Metric_Parks_SD

Display Field: designatio

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Tree Canopy (TC) Assessment metrics for San Diego, CA. This dataset consists of TC metrics summarized using the Parks (PARKS_SD) layer. The metrics presented in this table are based on 2014 high resolution land cover (landcover_2014_sandiego_13b.img). The TC Assessment is a top-down approach to analyzing the forest. Its purpose is to integrate high resolution land cover data with other GIS datasets to produce a set of detailed metrics on the forest that allow decision makers to know how much tree canopy currently exists (termed Existing TC) and amount of land where it is biophysically feasible to establish tree canopy on (termed Possible TC). Existing TC is determined by extracting all features classified as tree canopy from a high resolution land cover dataset. Possible TC is determined by identifying land where canopy could possibly exist. Possible TC in a GIS context is determined by overlaying high resolution land cover with cadastral and planimetric datasets to include building polygons and road polygons. Possible TC is queried out from this overlay and consists of all land that was not existing canopy, not water, not a building, and not a road. Possible TC is further divided into two subcategories: Possible-impervious and Possible-vegetation. Possible-impervious consists of all impervious land that, through modification, could support tree canopy. Examples of such features are parking lots, driveways (through overhanging coverage) and playgrounds. Possible-vegetation consists of all land that is low-lying vegetation, primarily grass or shrubs, which could conceivably be converted to support tree canopy. Examples of such features include residential lawns and playing fields. TC metrics do not serve to address the issues of where it is socially desirable or financially feasible to plant trees. Rather, the TC metrics serve as the basis for beginning to form answers to these questions. TC metrics are presented in the attribute table as both absolute area (in map units) and relative area (percentage of land area) per parcel. For example, an Existing TC Area (TC_E_A) value of 13,677 and an Existing TC Percentage (TC_E_P) of 21.8 indicate that for the parcel in question the area of Existing TC is 13,677 (in map units) and 21.8% of that feature is tree canopy. This table can be joined to the PARKS_SD feature class in this field using the TC_ID (a unique ID field created for this project) attribute field or the TC_ID attribute field (from the original feature class).

Service Item Id: 1b9530efa4614b02accbf602a4cb1cbf

Copyright Text: University of Vermont Spatial Analysis Laboratory in cooperation with the City of San Diego.

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports ValidateSQL: true

Supports Calculate: true

Extent:

XMin: 6244572.513027966
YMin: 1778893.0878679007
XMax: 6362157.999969393
YMax: 1986928.4834760576
Spatial Reference: 102646  (2230)

Drawing Info:

Renderer:
Simple Renderer:
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Outline:
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Label: N/A
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Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: false
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: true
Supports Returning Geometry Centroid: true
Supports Binning LOD: true
Supports Query With LOD Spatial Reference: true
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: false
Supports Sql Format: false
Supports Query Analytic: true
Supports Query With Current User: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field:

Fields:

• objectid ( nullable: false, defaultValue: null, editable: false, length: 4, type: esriFieldTypeOID, modelName: objectid, alias: OBJECTID )
• designatio ( modelName: DESIGNATIO, nullable: true, editable: true, defaultValue: null, length: 50, alias: DESIGNATIO, type: esriFieldTypeString )
• common_nam ( modelName: COMMON_NAM, nullable: true, editable: true, defaultValue: null, length: 254, alias: COMMON_NAM, type: esriFieldTypeString )
• tc_id ( modelName: TC_ID, nullable: true, editable: true, defaultValue: null, alias: TC_ID, type: esriFieldTypeInteger )
• tc_e_a ( modelName: TC_E_A, nullable: true, editable: true, defaultValue: null, alias: TC Existing Area, type: esriFieldTypeDouble )
• tc_pv_a ( modelName: TC_Pv_A, nullable: true, editable: true, defaultValue: null, alias: TC Possible-vegetation Area, type: esriFieldTypeDouble )
• tc_land_a ( modelName: TC_Land_A, nullable: true, editable: true, defaultValue: null, alias: TC Land Area, type: esriFieldTypeDouble )
• tc_pi_a ( modelName: TC_Pi_A, nullable: true, editable: true, defaultValue: null, alias: TC Possible-impervious Area, type: esriFieldTypeDouble )
• tc_p_a ( modelName: TC_P_A, nullable: true, editable: true, defaultValue: null, alias: TC Possible Area, type: esriFieldTypeDouble )
• tc_e_p ( modelName: TC_E_P, nullable: true, editable: true, defaultValue: null, alias: TC Existing Percent, type: esriFieldTypeDouble )
• tc_pv_p ( modelName: TC_Pv_P, nullable: true, editable: true, defaultValue: null, alias: TC Possible-Vegetation Percent, type: esriFieldTypeDouble )
• tc_p_p ( modelName: TC_P_P, nullable: true, editable: true, defaultValue: null, alias: TC Possible Percent, type: esriFieldTypeDouble )
• tc_pi_p ( modelName: TC_Pi_P, nullable: true, editable: true, defaultValue: null, alias: TC Possible-Impervious Percent, type: esriFieldTypeDouble )
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• SHAPE__Area ( virtual: true, nullable: true, editable: false, defaultValue: null, alias: SHAPE__Area, type: esriFieldTypeDouble )

Templates:

• Name: Tree_Canopy_Metric_Parks_SD
  Description:
  Prototype:
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  tc_land_a: null
  tc_p_p: null
  designatio: null
  tc_pv_p: null
  tc_e_a: null
  tc_e_p: null
  common_nam: null
  tc_id: null
  tc_pv_a: null
  tc_pi_a: null
  tc_pi_p: null
  
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Capabilities: Query,Sync,Extract

Sync Can Return Changes: true

Is Data Versioned: false

Supports Rollback On Failure: true

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Supports ApplyEdits By Upload Id: true

Supports Query With Historic Moment: false

Supports Coordinates Quantization: true

Child Resources:   Field Groups   Contingent Values

Supported Operations:   Query   Query Attachments   Query Analytic   Query Top Features   Query Bins   Append   Validate SQL   Generate Renderer   Return Updates   Metadata   Update Metadata