Observations on Planted Yellow Birch
نویسندگان
چکیده
منابع مشابه
Soil Animal Communities of Planted Birch Stands in Central Finland
The aim of this study was to compare soil animal communities in planted birch (Betula pendula) stands of different origin with each other and with natural forests. Six 30-year-old birch stands were investigated, three planted after clear-cutting of spruce stands, and three planted on cultivated soil. The faunal communities were markedly different in plantations established on spruce forest soil...
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Donovan, Geoffrey H.; Nicholls, David L.; Roos, Joseph. 2003. Marketing recommendations for wood products from Alaska birch, red alder, and Alaska yellow-cedar. Gen. Tech. Rep. PNW-GTR-589. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 13 p. Several factors have contributed to a recent decline in Alaska’s wood products industry, including redu...
متن کاملFrost tolerance and bud dormancy of container-grown yellow birch, red oak and sugar maple seedlings.
Container-grown seedlings of red oak (Quercus rubra L.), sugar maple (Acer saccharum Marsh.) and yellow birch (Betula alleghaniensis Britton) in their first year of growth were overwintered outdoors. Tolerance of roots and stems to freezing was compared from late summer to the following spring. Mitotic activity in the apical bud was related more closely to air temperature than to bud dormancy a...
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Silvicultural restoration measures have been implemented in the northern hardwoods forests of southern Quebec, Canada, but their financial applicability is often hampered by the depleted state of the resource. To help identify sites most suited for the production of high quality timber, where the potential return on silvicultural investments should be the highest, this study assessed the impact...
متن کاملOn SAT Distributions with Planted Assignments
While it is known how to generate satisfiable instances by reducing certain computational problems to SAT, it is not known how a similar generator can be developed directly for k-SAT. In this work we almost answer this question affirmatively by improving upon previous results in many ways. First, we give a generator for instances of MAX k-SAT, the version of k-SAT where one wants to maximize th...
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ژورنال
عنوان ژورنال: Northern Journal of Applied Forestry
سال: 1998
ISSN: 0742-6348,1938-3762
DOI: 10.1093/njaf/15.2.106