The “rescue” of the green, on Earth there are more trees than expected 3 billion billion – TGCOM

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10:29 – The Earth is greener than expected on its surface are over three billion billion trees. This was revealed by a study at Yale University, published in the journal Nature , which has made a “comprehensive survey” of trees on all continents through about 430 thousand reliefs . American research shows that for each of the more than seven billion people on the planet there would be very 422 trees, rather than 61 as previously thought.

The green map of the Earth – So far, the estimates were based on terrestrial vegetation is mainly on satellite data, but these were unable to achieve a degree of precision that can suggest the numerical reports. The census conducted in the US indicates that, for the most part (about 1.3 trillion), the trees are located in the tropics and subtropics. There are also 74 million billion trees that populate the boreal regions and 61 trillion in Temperate .

The ostaolo: deforestation – The US data also show that the presence of man “weighs” the green lungs of the Earth with 15 billion trees cut each year : an intervention that since the beginning of civilization She has led to an overall loss of 46% of the original vegetation. The rate of deforestation is higher in tropical regions, but the effects are felt in the long run on the entire ecosystem of the planet.

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