ABoVE: Vegetation Composition across Fire History Gradients on the Y-K Delta, Alaska

This dataset provides ecological field data that were collected during July 2017 and July 2018 from 43 plots spanning gradients of fire history in the upland tundra of the Yukon-Kuskokwim (Y-K) Delta, Alaska. Plot-level data include vegetation species composition and structure, leaf area index (LAI), topography, thaw-depth, and soil characteristics collected at plots burned in 1971-1972, 1985, 2006-2007, 2015, or unburned controls. Vegetation species were sampled along transects using the vegetation point-intercept (VPI) sampling approach and summarized by three metrics of vegetation cover: (1) top-hit cover, (2) any-hit cover, and (3) multi-hit cover. Each metric is the total number of hits for a species divided by the total number of sample points. The VPI any-hit cover metric data were combined with Landsat imagery to develop fractional maps of any-hit cover for four aggregated plant functional types (PFTs); bryophytes, herbs, lichen, and shrubs for the upland tundra area. Photographs of vegetation transects and soil pits are included as companion files.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated September 8, 2026, 04:54 (UTC)
Created April 1, 2025, 14:08 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id c4c08e87-6180-4020-8630-2573e2ced22a
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/1772
license https://www.usa.gov/government-works
modified 2026-08-31T22:16:02Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 0965109cba99e541182a79ff82867b8d1d0dc1b7e689ab22c755ce22069f7c83
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -164.688, "NorthBoundingCoordinate": 62.0883, "EastBoundingCoordinate": -160.938, "SouthBoundingCoordinate": 60.3598}]]
temporal 2017-07-20/2018-07-16
theme {"Earth Science"}