Author: Christopher S. Potter, Bioshpheric Science Branch (SGE), NASA Ames Research Center
Source: Journal of Biodiversity, Management, & Forestry [Full PDF]

Extreme drought from 2013 to 2015 has been linked to extensive tree dieback in the #Sierra_Nevada region of California. #Landsat_satellite_imagery was analysed for the region from Lake Tahoe to the southern Sequoia National Forest with the objective of understanding the patterns of tree mortality in the years of 2013 to 2015and into the near-normal precipitation year of 2016. The main #mapping results for #Landsat_moisture index differences from year-to-year showed that the highest coverage of tree dieback was located in the Sierra and #Sequoia_National_Forests, at four to five times greater area each year than within any other National Park or National Forest unit.

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