Service Description: This data set contains the 1987-2017 Landsat/LandTrendr derived landscape change data from Olympic National Park and surrounding US Forest Service Wilderness Areas, labeled by landscape change type chosen from a discrete list.
Service ItemId: 4e3d2b3098974b77bd3f4a04efa1633a
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Max Record Count: 1000
Supported query Formats: JSON
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Supports Shared Templates: False
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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 Olympic National Park (MORA) in 2014 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 MORA 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.
Copyright Text: North Coast and Cascades Network Inventory and Monitoring Program
Spatial Reference: 26910 (26910)
Initial Extent:
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YMin: 5282849.87055948
XMax: 512980.443005226
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Spatial Reference: 26910 (26910)
Full Extent:
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YMin: 5256700.836
XMax: 645346.0918
YMax: 5384559.4536
Spatial Reference: 26910 (26910)
Units: esriMeters
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