Layer: WARDS Tree Canopy Change Metrics (ID:4)

View In: Map Viewer

Name: WARDS Tree Canopy Change Metrics

Display Field: WARD

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: <div style="text-align:Left;">Tree Canopy Change Assessment metrics for Boston, MA. These datasets consist of tree canopy change metrics summarized using various geographies. The metrics presented in these tables are based on 2019 leaf-on LiDAR, 2019 high resolution land cover, and the high resolution 2019 tree canopy layer (Tree Canopy Change 2014-2019.tif). The Tree Canopy Change Assessment is a top-down approach to analyzing forest change for over the period of 2014 and 2019. 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 was gained (termed Gain), how much tree canopy was lost (termed Loss), and how much tree canopy did not change over the given time period (termed No_Change). Existing TC is determined by extracting all features classified as tree canopy from a high resolution land cover dataset. The area in which there has been a change in tree canopy (termed Change_Are) is calculated using the TreeCano_1 (2019) subtracted by the TreeCanopy (2014), if this value is negative then this represents a loss in tree canopy over the time frame given. The percent of tree canopy change (termed Change_P1) is calculated using TreeCano_3 (2019) subtracted by TreeCano_2 (2014), if this value is negative then this represents a loss in tree canopy over the time frame given. LandArea= Area excluding water bodiesGain= Area of canopy gain between the two yearsLoss= Area of canopy loss between the two yearsNo_Change= Area of no canopy change between the two yearsTreeCanopy= 2014 total canopy area (baseline)TreeCano_1 = 2019 total canopy areaChange_Are= The change in area of tree canopy between the two yearsChange_Per= Relative change calculation used in economics is the gain or loss of tree canopy relative to the earlier time period: (2019 Canopy-2014 Canopy)/(2014 Canopy)TreeCano_2 = 2014 canopy percentageTreeCano_3= 2019 canopy percentageChange_P_1= Absolute change. Magnitude of change in percent tree canopy from 2014 to 2019 (% 2019 Canopy-% 2014 Canopy)</div>

Copyright Text: Boston Parks and Recreation Department with the University of Vermont Spatial Analysis Lab

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Object ID Field: FID

Unique ID Field:

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Type ID Field:

Fields:

FID (type: esriFieldTypeOID, alias: FID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
WARD (type: esriFieldTypeInteger, alias: WARD, SQL Type: sqlTypeOther, nullable: true, editable: true)
CNT_WARD (type: esriFieldTypeInteger, alias: CNT_WARD, SQL Type: sqlTypeOther, nullable: true, editable: true)
TC_ID (type: esriFieldTypeInteger, alias: TC_ID, SQL Type: sqlTypeOther, nullable: true, editable: true)
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OBJECTID (type: esriFieldTypeInteger, alias: OBJECTID, SQL Type: sqlTypeOther, nullable: true, editable: true)
TC_ID_1 (type: esriFieldTypeInteger, alias: TC_ID_1, SQL Type: sqlTypeOther, nullable: true, editable: true)
LandArea (type: esriFieldTypeDouble, alias: LandArea, SQL Type: sqlTypeOther, nullable: true, editable: true)
Gain (type: esriFieldTypeDouble, alias: Gain, SQL Type: sqlTypeOther, nullable: true, editable: true)
Loss (type: esriFieldTypeDouble, alias: Loss, SQL Type: sqlTypeOther, nullable: true, editable: true)
No_Change (type: esriFieldTypeDouble, alias: No_Change, SQL Type: sqlTypeOther, nullable: true, editable: true)
TreeCanopy (type: esriFieldTypeDouble, alias: TreeCanopy, SQL Type: sqlTypeOther, nullable: true, editable: true)
TreeCano_1 (type: esriFieldTypeDouble, alias: TreeCano_1, SQL Type: sqlTypeOther, nullable: true, editable: true)
Change_Are (type: esriFieldTypeDouble, alias: Change_Are, SQL Type: sqlTypeOther, nullable: true, editable: true)
Change_Per (type: esriFieldTypeDouble, alias: Change_Per, SQL Type: sqlTypeOther, nullable: true, editable: true)
TreeCano_2 (type: esriFieldTypeDouble, alias: TreeCano_2, SQL Type: sqlTypeOther, nullable: true, editable: true)
TreeCano_3 (type: esriFieldTypeDouble, alias: TreeCano_3, SQL Type: sqlTypeOther, nullable: true, editable: true)
Change_P_1 (type: esriFieldTypeDouble, alias: Change_P_1, SQL Type: sqlTypeOther, nullable: true, editable: true)
Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
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Last Edit Date: 6/26/2024 3:23:23 PM

Schema Last Edit Date: 5/14/2021 12:02:00 PM

Data Last Edit Date: 5/14/2021 12:02:00 PM

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