"When we can identify a tre - call it by its own name - we become more closely linked to our forefathers, who would no more have confused a Maple with a Sycamore than would we, say, mistake a vacuum cleaner for a computer. They were on intimate terms with the trees around them and understood the glory of how they function: the roots holding the tree in the ground, absorbing water; the leaves creating food for the tree out of water, light and air, and giving off oxygen in the process; the trunk supporting the branches and holding - right under the waterproof protective bark - all the tubes that take water and minerals up to the leaves and food down from them.
There are some small signs that, after centuries of wholesale landclearing, the heads of even the most hardened profiteers, so long unturned by the "mere" beauty of trees, are beginning to calculate the economic contributions they make to our quality of life. Trees purify the air and cool it, reduce soil erosion, filter impurities from water, and offer protection from sun and wind, all the while providing shelter and food for wildlife."
TERMÉSZETTUDOMÁNY / Botanika kategória termékei
Steven M. L. Aronson: Trees. North American Trees Identified by Leaf, Bark & Seed
Kiadás:
New York, 1997
Kiadó:
Kategóriák:
Nyelv:
Angol
Sorozat:
Terjedelem:
96 p.
Kötésmód:
fűzött
ISBN:
0761112049