Forests remove carbon dioxide from the air, conserve soil and water, and are home to a variety of species. (46) They are also repositories of potentially valuable new products, such as pharmaceuticals, and as a source of building material and firewood they provide employment for millions worldwide.
In 1990 forests took up about a quarter of the planet’ s land surface ( not including an additional 13 percent of other woody vegetation, such as sparsely covered woodland and brush land). Russia accounts for perhaps a fifth of the globe’s forest. Brazil for about a seventh, and Canada and the U.S. each for 6 to 7 percent. (47) Historically, virtually all countries have experienced deforestation, mostly because of the need for new farmland, pasture, fuelwood and timber. In the U. S. , forests now cover 22 percent of the land area, a decline of perhaps 40 percent since European colonization began. (48) Forest acreage, however, has remained about the
Forests remove carbon dioxide from the air, conserve soil and water, and are home to a variety of species. (46) They are also repositories of potentially valuable new products, such as pharmaceuticals, and as a source of building material and firewood they provide employment for millions worldwide.
In 1990 forests took up about a quarter of the planet’ s land surface ( not including an additional 13 percent of other woody vegetation, such as sparsely covered woodland and brush land). Russia accounts for perhaps a fifth of the globe’s forest. Brazil for about a seventh, and Canada and the U.S. each for 6 to 7 percent. (47) Historically, virtually all countries have experienced deforestation, mostly because of the need for new farmland, pasture, fuelwood and timber. In the U. S. , forests now cover 22 percent of the land area, a decline of perhaps 40 percent since European colonization began. (48) Forest acreage, however, has remained about the
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