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NCCN Forest Vegetation Monitoring Sample Design Geodatabase

Published by National Park Service | Department of the Interior | Metadata Last Checked: January 25, 2026 | Last Modified: 2014-06-01T00:00:00Z
The geodatabase represents the sampling design used to meet the project's purpose. The sampling design relies upon spatially balanced GRTS sampling. Geodatabase representing the sample design for the North Coast and Cascades Network (NCCN) forest vegetation monitoring project. The Forest Monitoring project objectives are to monitor trends in the processes of tree recruitment, growth, and mortality, and in forest structure and composition. The geodatabase represents the sampling design used to meet project objectives. The sampling design relied upon spatially balanced, Generalized Random Tessellation Stratified (GRTS) sampling for all parks. The GRTS sample design was created using stratified equal probability survey design methods (psurvey.design package for R). Strata were defined based on elevation bands. The sample design formed the basis for office and field evaluation of selected locations, and the subsequent establishment of long-term monitoring plots.

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