Tundra plant above-ground biomass and shrub dominance mapped across the North Slope of Alaska

Arctic tundra is becoming greener and shrubbier due to recent warming. This is impacting climate feedbacks and wildlife, yet the spatial distribution of plant biomass in tundra ecosystems is uncertain. In this study, we mapped plant and shrub above-ground biomass (AGB; kg m−2) and shrub dominance (%...

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Veröffentlicht in:	Environmental research letters 2018-03, Vol.13 (3), p.35002
Hauptverfasser:	Berner, Logan T, Jantz, Patrick, Tape, Ken D, Goetz, Scott J
Format:	Artikel
Sprache:	eng
Schlagworte:	Air temperature arctic boreal vulnerability experiment (ABoVE) arctic greening Biomass Calibration carbon stock climate change Corridors Dominance Environmental changes google earth engine Image acquisition Image resolution Landsat Landsat satellites normalized difference vegetation index (NDVI) Normalized difference vegetative index Plant biomass Polar environments Regression analysis Regression models Remote sensing Satellite imagery Spatial distribution Summer Taiga & tundra Tundra Uncertainty analysis Wildlife
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Beschreibung
Zusammenfassung:	Arctic tundra is becoming greener and shrubbier due to recent warming. This is impacting climate feedbacks and wildlife, yet the spatial distribution of plant biomass in tundra ecosystems is uncertain. In this study, we mapped plant and shrub above-ground biomass (AGB; kg m−2) and shrub dominance (%; shrub AGB/plant AGB) across the North Slope of Alaska by linking biomass harvests at 28 field sites with 30 m resolution Landsat satellite imagery. We first developed regression models (p
ISSN:	1748-9326 1748-9326
DOI:	10.1088/1748-9326/aaaa9a