. Bulletin. Forests and forestry -- United States. REC^HIREMENTS FOR LIGHT. 31 and moisture than on the possession of certain qualities, among which is the ability to bear shade. Witli regard to this power trees are roughly divided into two classes, often called shade-bearing and light-demanding, follow- ing the German, but better named tolerant and intoler- ant of shade. (Seefigs. 27. 28.) Tolerant trees are those which nourish under more or less heavy shade in early. Fig. 28.—Heavy croons <U a tuhnunl .-^pt^cit-^. Washiugtou. iiie Alpine Fir iu northern youth; intolerant trees are those w
. Bulletin. Forests and forestry -- United States. REC^HIREMENTS FOR LIGHT. 31 and moisture than on the possession of certain qualities, among which is the ability to bear shade. Witli regard to this power trees are roughly divided into two classes, often called shade-bearing and light-demanding, follow- ing the German, but better named tolerant and intoler- ant of shade. (Seefigs. 27. 28.) Tolerant trees are those which nourish under more or less heavy shade in early. Fig. 28.—Heavy croons <U a tuhnunl .-^pt^cit-^. Washiugtou. iiie Alpine Fir iu northern youth; intolerant trees are those which demand a com- paratively slight cover, or even unrestricted light. Later in life all trees require much more light than at first, and usuallv those of both classes can live to old age only when they are altogether unshaded from above. But there is always this ditference between them: the leaves of tolerant trees will bear more shade. Conse-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Division of Forestry. Washington : G. P. O.
Size: 1773px × 1410px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookpublisherwashingtongpo, booksubjectforestsandforestryunited
