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Development Over 25 Years of Douglas Fir, Western Hemlock and Western Redcedar Planted at Various Spacings on a Very Good Site in British Columbia (Classic Reprint) - Softcover
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Excerpt from Development Over 25 Years of Douglas Fir, Western Hemlock and Western Redcedar Planted at Various Spacings on a Very Good Site in British Columbia<br/><br/>Top heights were initially a little taller at close spacings because of more opportunities for natural selection of superior genotypes and microsites, but top heights are now similar at all spacings; initial advantages of natural selection for the many trees planted at close spacings have disappeared. Average heights are now shorter at close spacing. Decreases in heights to dead and live crowns and increases in diameter of lower boles, taper, and crown size occurred as spacing increased. Basal area and volumes per hec tare increased as spacing decreased until onset of density-related mortality from snow damage and similar causes.
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Development Over 25 Years of Douglas Fir (Classic Reprint)
Print-on-DemandAnbieter: Forgotten Books, London, Vereinigtes Königreich
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Paperback. Zustand: New. Print on Demand. This book presents a comprehensive study of Douglas fir, western hemlock, and western redcedar trees grown at various spacings on a very productive site in British Columbia over 25 years. The author's detailed analysis of five spacing trials reveals the crucial role of initial spacing in optimizing tree growth and stand development in these important commercial species. Initial wide spacings, with rectangularities of up to 6 by 3 meters, resulted in significantly larger trees of superior quality. This demonstrates the potential for efficient production of high-value and satisfactory-quality timber through optimized spacing. The author provides valuable insights into the effects of spacing on bole and crown development, stand growth, and yield. The findings have significant implications for forest management practices, emphasizing the importance of choosing optimal spacings to meet specific management objectives. This book is an invaluable resource for foresters, researchers, and anyone interested in maximizing the productivity and quality of conifer stands in similar ecosystems. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9781390448214_0
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