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Pixel walking along the boreal forest–Arctic tundra ecotone: Large scale ground‐truthing of satellite‐derived greenness ( NDVI )

Russell E. Wong; Logan T. Berner; Patrick F. Sullivan; Christopher S. Potter; Roman J. Dial
Global Change Biology · Vol. 30, Issue 6 · 2024

Abstract

In this Technical Advance, we describe a novel method to improve ecological interpretation of remotely sensed vegetation greenness measurements that involved sampling 24,395 Landsat pixels (30 m) across 639 km of Alaska's central Brooks Range. The method goes well beyond the spatial scale of traditional plot‐based sampling and thereby more thoroughly relates ground‐based observations to satellite measurements. Our example dataset illustrates that, along the boreal‐Arctic boundary, vegetation with the greatest Landsat Normalized Difference Vegetation Index (NDVI) is taller than 1 m, woody, and deciduous; whereas vegetation with lower NDVI tends to be shorter, evergreen, or non‐woody. The field methods and associated analyses advance efforts to inform satellite data with ground‐based vegetation observations using field samples collected at spatial scales that closely match the resolution of remotely sensed imagery.

Bibliographic Information

JournalGlobal Change Biology
PublisherWiley
Publication Date2024-06-01
Publication Year2024
Volume30
Issue6
Document TypeJournal Article
Print ISSN1354-1013
eISSN1365-2486
DOI10.1111/gcb.17374
SubjectConservation Science

Access Information

NARA Access Coverage1997-01-01~Current
Journal Homepagehttps://onlinelibrary.wiley.com/loi/13652486
Publisher PageOpen Publisher Page
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