In recent years rule 3-30-300 was popularized to illustrate the recommended access to green spaces for the population of cities. The standard, devised by the Dutch researcher Cecil C. Konijnendijk, was assumed by WHO, which stated that "each inhabitant should be able to see three trees from his home, 30% of the area of each neighborhood would have to be covered by treetops and there should be a park of at least one hectare less than 300 meters f…
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In recent years rule 3-30-300 was popularized to illustrate the recommended access to green spaces for the population of cities. The standard, devised by the Dutch researcher Cecil C. Konijnendijk, was assumed by WHO, which stated that "each inhabitant should be able to see three trees from his home, 30% of the area of each neighborhood would have to be covered by treetops and there should be a park of at least one hectare less than 300 meters f…