NCCN Landscape Dynamics Monitoring NOCA geospatial data 1985-2009

Metadata Updated: January 29, 2020

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 Oregon State University.

LandTrendr tracks the spectral trajectory of Landsat pixels through time and smoothes their spectral index signatures into coherent segments describing periods of stability or change. The primary outputs from LandTrendr are the year of change onset, the duration of change, and the magnitude of the change. Adjacent pixels with the same year of change onset are then grouped into patches. Only changes larger than 0.8 ha (2 ac) and for which the duration of the period of landscape change is less than or equal to 4 years are retained.

This data set contains 1985-2009 Landsat/LandTrendr derived landscape change data from North Cascades National Park Service Complex and surrounding areas, labeled by landscape change type chosen from a discrete list. Eight categories of landscape change were mapped: 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. These data were summarized in Antonova, N., C. Copass, and S. Clary. 2013. Landsat-based monitoring of landscape dynamics in the North Cascades National Park Service Complex: 1985-2009. Natural Resource Data Series NPS/NCCN/NRDS—2013/532. National Park Service, Fort Collins, Colorado. (https://irma.nps.gov/DataStore/Reference/Profile/2198729).

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

References

https://irma.nps.gov/DataStore/Reference/Profile/2267898

Dates

Metadata Created Date January 29, 2020
Metadata Updated Date January 29, 2020

Metadata Source

Harvested from DOI Open Data

Additional Metadata

Resource Type Dataset
Metadata Created Date January 29, 2020
Metadata Updated Date January 29, 2020
Publisher National Park Service
Unique Identifier NPS_DataStore_2267898
Maintainer
NPS IRMA Help
Maintainer Email
Public Access Level public
Bureau Code 010:24
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID C:\Program Files (x86)\NPS\DataStore\Application\OpenData\NPS_DataStore_v1_1.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Data Quality true
Harvest Object Id 6ac27056-bdc3-4349-bdb4-2006b6652a68
Harvest Source Id 5b7e4031-1e2d-428b-92e2-56554bbd7371
Harvest Source Title DOI Open Data
Data First Published 2019-12-31
Homepage URL https://irma.nps.gov/DataStore/Reference/Profile/2267898
Data Last Modified 2019-12-31
Program Code 010:118, 010:119
Related Documents "https://irma.nps.gov/DataStore/Reference/Profile/2267898"
Source Datajson Identifier true
Source Hash 81ce8c64872249c9aa873b9d3f113e7529480e2c
Source Schema Version 1.1
Spatial -122.39,48.08,-120.35,49.34
Temporal 1985-01-01/2009-01-01
Category "Geospatial Dataset"

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