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Growth and Survival of Douglas-fir and Western Redcedar Planted at Different Densities and Species Mixtures
Louise De MontignyGordon Donald Nigh
出版Ministry of Forests and Range, Forest Science Program, 2007
主題Nature / Plants / TreesTechnology & Engineering / Agriculture / Forestry
ISBN07726582189780772658210
URLhttp://books.google.com.hk/books?id=pyLS10iHcYcC&hl=&source=gbs_api
註釋Decisions about planting mixtures require an understanding of the survival and growth rates of the different species when grown together at different spacings; too many trees of either species may result in volume loss to overcrowding and mortality. The experiment described in this report examines the effects on growth and development of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) and western redcedar (Thuja plicata Donn ex D. Don in Lamb) after 14 years when grown at 500, 1000, or 2000 stems per hectare in Douglas-fir-western redcedar mixes of 1:0, 1:1, 1:3, and 0:1. Survival and height, diameter at breast height (dbh), volume, and crown growth were measured.--Document.