Layers:

Layer: NOCA Landscape Change 1987-2017 (0)


Name: NOCA Landscape Change 1987-2017

Display Field: Dist_name

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: As part of Vital Signs Monitoring, the North Coast and Cascades Network (NCCN) of the National Park Service (NPS) developed a protocol for monitoring landscape change using Landsat satellite imagery. The protocol was implemented at North Cascades National Park Service Complex (NOCA) in 2012 using LandTrendr (Landsat-based Detection of Trends in Disturbance and Recovery) algorithms developed by the Laboratory for Applications of Remote Sensing in Ecology (LARSE) at Oregon State University.Eight categories of landscape change that occurred at NOCA and surrounding areas from 1987 to 2017 were mapped and labeled: Avalanches, Clearing, Development, Fire, Mass Movements, Progressive Defoliation, Riparian, and Tree Topplings. The Avalanche category captures long, linear change which partially or completely removes vegetation from the valley wall following a release of a large mass of snow down a mountain side. Clearings are areas under forest management where practices vary from thinning to clearcuts. The Development category captures changes associated with complete and persistent removal of vegetation and transformation to a built landscape. Changes due to Fire vary in intensity from full canopy removal to partial burns that leave behind a mixture of dead and singed trees. The Mass Movement category includes both landslides found on valley walls and debris flows associated with streams. Progressive Defoliation is a change type in which the forest cover remains but has declined due to insect infestation, disease or drought. Riparian changes are restricted to the valley floors alongside major streams and rivers and capture areas where either conifer or broadleaf vegetation previously existed and has been converted to river channel. Change due to Tree Toppling is evidenced by broken or topped trees, generally due to wind but sometimes to root rot. Only changes larger than 0.8 ha (2 ac) and for which the duration of the period of landscape change was less than 4 years were mapped. This version of the data set was generated by running LandTrendr in Google Earth Engine and is a replacement of the 1985-2009 data set published in 2000 (NPS Data Store Record 2282297).

Copyright Text: North Coast and Cascades Network Inventory and Monitoring Program

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 1000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: 581871.3473
YMin: 5327806.381
XMax: 699843.4555
YMax: 5464902.266
Spatial Reference: 26910 (26910)


Drawing Info:

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Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

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Global ID Field: GlobalID

Type ID Field: ChangeType

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• ChangeType (type: esriFieldTypeString, alias: ChangeType, SQL Type: sqlTypeOther, length: 25, nullable: true, editable: true)
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Types:

ID: Avalanche
Name: Avalanche
Domains:

Templates:

Name: Avalanche
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• ChangeType: Avalanche

---

ID: Clearing
Name: Clearing
Domains:

Templates:

Name: Clearing
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• ChangeType: Clearing

---

ID: Development
Name: Development
Domains:

Templates:

Name: Development
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• ChangeType: Development

---

ID: Fire
Name: Fire
Domains:

Templates:

Name: Fire
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• ChangeType: Fire

---

ID: Mass Movement
Name: Mass Movement
Domains:

Templates:

Name: Mass Movement
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• ChangeType: Mass Movement

---

ID: Progressive Defoliation
Name: Progressive Defoliation
Domains:

Templates:

Name: Progressive Defoliation
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• ChangeType: Progressive Defoliation

---

ID: Riparian
Name: Riparian
Domains:

Templates:

Name: Riparian
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• ChangeType: Riparian

---

ID: Tree Toppling
Name: Tree Toppling
Domains:

Templates:

Name: Tree Toppling
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• ChangeType: Tree Toppling

---


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Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 3/28/2024 6:26:48 PM

Schema Last Edit Date: 3/28/2024 6:26:48 PM

Data Last Edit Date: 3/28/2024 6:26:48 PM