Thanks to three NASA satellites, the first map that tracks and identifies all the trees on Earth, also highlighting their height, was created.
He is about to end up run over, his mother saves himIt was built thanks to three satellites of the NASA the first map it draws and identifies all trees on Earth, also highlighting the height.
The data and indications provided by this mapping will be able to give exact estimates of the health of forests, provide a clear idea of them distribution in various areas of the world and they will probably help scientists to better understand where 2 ">emissions CO2 produced by human activities.
“Man produces every year seven billion tons of carbon, especially in the form of CO2 - he said Michael Lefsky, a Colorado State University scholar - three billion remain in the atmosphere, while two are absorbed by oceans. The rest could be held back by the forests, but to understand this we must have a 'exact idea of how much biomass exists on the planet, and the map can be very useful in this “.
According to the mapping obtained by three NASA satellites, from the names ICE Sat, Terra e Aqua, tallest forests in the world are those found in the western part of the United States and in the southern areas of Asia. Among the various types of forests, those of sequoias are the highest (they reach 40 meters in height), while those of oaks and beeches, very common in Europe, measure approx 25 meters high.
From these data the experts will try to understand to what extent this vegetation contributes to the absorption of carbon present in the air, but apparently to absorbing the two billion tons of C02 are our tree friends.
To learn more: http://www.nasa.gov/topics/earth/features/forest-height-map.html
