Layers:

Layer: KetchikanMistyFjords_ReferenceData (0)


Name: KetchikanMistyFjords_ReferenceData

Display Field: SiteID

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description:

This feature class contains reference data points for the existing vegetation type mapping for the Ketchikan Misty Fjords Project Area on the Tongass National Forest. The data contains points with vegetation information from ground visits, the Tongass National Forest's Young Growth Inventory, and other legacy data. This effort to map existing vegetation was a partnership between the Geospatial Technology and Applications Center (GTAC), Tongass National Forest, and the Alaska Regional Office. The Tongass National Forest and their partners prepared the regional classification system, identified the desired map units (map classes) and provided general project management. GTAC provided project support and expertise in vegetation mapping.

The modeling units (mapping polygons) were characterized with the following vegetation attributes: 1) vegetation type; 2) tree canopy cover; 3) trees per acre (TPA) for trees ≥ 1’ tall; 4) trees per acre for trees ≥ 6” diameter at breast height (DBH); 5) quadratic mean diameter (QMD) for trees ≥ 2” DBH; 6) quadratic mean diameter for trees ≥ 9” DBH; 7) thematic tree size; 8) biomass for trees ≥ 2” DBH; 9) gross board feet (GBF) for trees ≥ 9” DBH; and 10) stand density index (SDI) for trees ≥ 9” DBH. The minimum map feature depicted on the map is 0.25 acres. All map products were designed according to the Forest Service mid-level vegetation mapping standards to be stored in the Forest GIS and National databases. This map product was generated using imagery primarily acquired in 2019 – 2022, reference information collected in the summers of 2019 – 2022, and LiDAR data from 2018. Therefore, the final map can be considered indicative of the existing vegetation conditions found within the project boundary in 2022.

Note that the forest structure metrics will be more reliable within the LiDAR extent versus outside. Outside the LiDAR extent these metrics were extrapolated using more coarse spectral and topographic data. Therefore, it is important for a product user to understand whether they are within the LiDAR acquisition area as indicated by the "Source_Extent" field to ascertain the ultimate reliability of a particular structure metric.

For more detailed information on mapping methodology please see the Ketchikan Misty Fjords Existing Vegetation Project Report.



Copyright Text: Alaska Region Office, Tongass National Forest, Geospatial Technology and Applications Center, The Nature Conservancy, Forest Inventory and Analysis (FIA), State & Private Forestry

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -14711163.7989666
YMin: 7354369.77093949
XMax: -14471563.8225599
YMax: 7576018.32809464
Spatial Reference: 102100 (3857)


Drawing Info:

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HasZ: false

HasM: false

Has Attachments: true

Has Geometry Properties: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True


Global ID Field:

Type ID Field: Source

Fields:
• OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• SiteID (type: esriFieldTypeString, alias: SiteID, SQL Type: sqlTypeOther, length: 10, nullable: true, editable: true)
• Source (type: esriFieldTypeString, alias: Source, SQL Type: sqlTypeOther, length: 20, nullable: true, editable: true)
• QC_DomType (type: esriFieldTypeString, alias: QC_DomType, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• QC_TreeSize (type: esriFieldTypeString, alias: QC_TreeSize, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• QC_Notes (type: esriFieldTypeString, alias: QC_Notes, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)

Types:

ID: Ground 2019
Name: TNF Ground Data
Domains:

Templates:

Name: Ground 2019
Description:
Drawing Tool: esriFeatureEditToolPoint
Prototype:

Attributes:

• Source: Ground 2019

---

ID: Ground 2020
Name: TNF Ground Data
Domains:

Templates:

Name: Ground 2020
Description:
Drawing Tool: esriFeatureEditToolPoint
Prototype:

Attributes:

• Source: Ground 2020

---

ID: Ground 2021
Name: TNF Ground Data
Domains:

Templates:

Name: Ground 2021
Description:
Drawing Tool: esriFeatureEditToolPoint
Prototype:

Attributes:

• Source: Ground 2021

---

ID: Ground 2022
Name: TNF Ground Data
Domains:

Templates:

Name: Ground 2022
Description:
Drawing Tool: esriFeatureEditToolPoint
Prototype:

Attributes:

• Source: Ground 2022

---

ID: Legacy
Name: Legacy Data
Domains:

Templates:

Name: Legacy
Description:
Drawing Tool: esriFeatureEditToolPoint
Prototype:

Attributes:

• Source: Legacy

---

ID: Young Growth
Name: Young Growth Inventory
Domains:

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Name: Young Growth
Description:
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• Source: Young Growth

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Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 10/19/2023 5:28:42 PM

Schema Last Edit Date: 10/19/2023 5:28:42 PM

Data Last Edit Date: 10/19/2023 5:28:42 PM