The study was made at the request of a United Nations project which wanted an estimate on which to base reforestation targets. As well as numbers and distribution the study looks at what factors might control the density of trees in any given area, such as soil type. The study suggests there are 422 trees per each person on the planet .
The study was made at the request of a United Nations project which wanted an estimate on which to base reforestation targets. As well as numbers and distribution the study looks at what factors might control the density of trees in any given area, such as soil type. The study suggests trees outnumber humans by 422 to one .
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there are 422 trees per each person on the planet
trees outnumber humans by 422 to one