The tree density per hectare is shown for different crown size classes: (a) 3-15 m2, (b) 15-50 m2, (c) 50-200 m2, (d) >200 m2. Source: Brandt et al. (2020)
Searching for the term remote sensing and words related to invasive species (invasive, nonnative, exotic, or nonindigenous) in Google Scholar reveals an increasing number of publications each year using these terms.
A new Earthdata article describes how researchers are using remote sensing to map invasive species.
NDVI trends derived from 30 m Landsat NDVI times series for 1984-2012 across Canada and Alaska.
A new dataset from NASA's ABoVE campaign provides trends in NDVI over the Landsat era.
Long-term maximum NDVI for the ABoVE study area covering the years 2002-2017.
Annual maximum NDVI estimates from 2002-2017 are available for most of Alaska and the Yukon Territory.