NASA/USGS Mission Helps Answer: What Is a Forest
Greenbelt MD (SPX) Oct 06, 2015 - Examining eight different satellite-derived maps of global forest cover, a team of scientists from NASA and other institutions noticed striking differences. The forested area on the maps differed by as much as 6 percent of Earth's land area, nearly equivalent to the size of China. The reason, they found with the help of the Landsat satellites, was varied definitions of what constitutes a f ... more
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