In the European Alps the importance of forests as protection against ava- lanches and soil erosion is becoming ever clearer with the continuing increase in population and development of tourism. The protective potential of the moun- tain forests can currently only be partially realised because a considerable propor- tion of high-altitude stands has been destroyed in historical times by man's extensive clearing ofthe forests. The forests still remaining are of limited effec- tiveness, due to inadequate density of trees and over-maturity. Considerable efforts, however, are now being made in the Alps and other mountains of the globe to increase the high-altitude forested area through reforestation, to raise depressed timberlines, and to restore remaining protection forests using suit- able silvicultural methods to their full protective value. This momentous task, if it is to be successful, must be planned on a sound foundation. An important prerequisite is the assembly of scientific facts con- cerning the physical environment in the protection forest zone of mountains, and the course of various life processes of tree species occurring there. Since the introduction of practical field techniques it has been possible to investigate successfully the reaction of trees at various altitudes to recorded factors, and the extent to which they are adapted to the measured situations. Such ecophysio- logical studies enable us to recognize the site requirements for individual tree species, and the reasons for the limits of their natural distribution.
Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.
Vendeur : Anybook.com, Lincoln, Royaume-Uni
Etat : Poor. Volume 31. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. Clean from markings. In poor condition, suitable as a reading copy. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,600grams, ISBN:3540090657. N° de réf. du vendeur 9824790
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Vendeur : Better World Books: West, Reno, NV, Etats-Unis
Etat : Good. 1st Edition. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good. N° de réf. du vendeur 56733929-75
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Vendeur : ThriftBooks-Dallas, Dallas, TX, Etats-Unis
Hardcover. Etat : Very Good. No Jacket. Former library book; May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less 1.15. N° de réf. du vendeur G3540090657I4N10
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Vendeur : Antiquariat Bookfarm, Löbnitz, Allemagne
Hardcover. 144 S. Ehem. Bibliotheksexemplar mit Signatur und Stempel. GUTER Zustand, ein paar Gebrauchsspuren. Ex-library with stamp and library-signature. GOOD condition, some traces of use. AB-8388 3540090657 Sprache: Englisch Gewicht in Gramm: 550. N° de réf. du vendeur 2382257
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Vendeur : Roland Antiquariat UG haftungsbeschränkt, Weinheim, Allemagne
Hardcover. 137 p. Good condition. The reading pages are clean and unmarked. Slight signs of storage and use. Retired library copy with corresponding labelling. Otherwise a good copy. 9783540090656 Sprache: Englisch Gewicht in Gramm: 1000. N° de réf. du vendeur 297037
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Vendeur : Larry W Price Books, Portland, OR, Etats-Unis
Hardcover. Etat : Fine. 1st Edition. 137 pp., Illus incl 1 Color Photo Plt, Orig Grn Illus Hardback, owner signature else Fine, no DJ, 1st ed. N° de réf. du vendeur 107334
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Vendeur : Antiquariat Silvanus - Inhaber Johannes Schaefer, Ahrbrück, Allemagne
137 S. mit 67 Figuren, (137 pp. with 67 Figures), 3540090657 Sprache: Englisch Gewicht in Gramm: 520 Groß 8°, Original-Pappband (Hardcover), Bibliotheks-Exemplar (ordnungsgemäß entwidmet) mit Rückenschild, Stempel auf Titel, Kanten minimal berieben, insgesamt gutes und innen sauberes Exemplar, N° de réf. du vendeur 61220
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Vendeur : Mispah books, Redhill, SURRE, Royaume-Uni
Hardcover. Etat : Very Good. Very Good. Dust Jacket may NOT BE INCLUDED.CDs may be missing. SHIPS FROM MULTIPLE LOCATIONS. book. N° de réf. du vendeur ERICA82935400906575
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