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634.9
G 75

    Principles of handling woodlands
[Текст] : монография / H.S. Graves. - New York : John Wiley & Sons, Inc., Б. г. - 325 с. : ill. - eng. - 30.00 р.
УДК

Кл.слова (ненормированные):
american fores -- selection system -- cutting -- protection

Аннотация: The book deals primarily with the principles of cutting mature stands of timber with a view to their replacement by new growth; cuttings in immature stands made for their improvement; and forest protection, with particular reference to forest fires. The book is not intended as a complete treatise on silviculture, but deals only with the treatment of wooalands. The methods of artificial seeding and planting are not included at all.

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634.9
K 81

    Biologische Aspekte zur Jungbestandspflege der Fichte Diskussion des Olper Fichten-Durchforstungsversuches
[Текст] : монография / H. Kramer, N. Bjerg ; Universitat Gottingen. - Frankfurt am Main : J.D. Sauerlander's Verlag, 1978. - 121 с. : табл. - (Schriften aus der Forstlichen Fakultat der Universitat Gottingen und der Niedersachsischen Forstlichen Versuchsanstalt / Universitat Gottingen, ISSN 0344-5666 ; 55). - ger. - Библиогр.: с. 113-123. - ISBN 3-7939-5055-7 : 3.20 р.
УДК

Кл.слова (ненормированные):
Zuwachs -- Aufnahmenthodik -- Baumen -- Boden

Аннотация: To rationalize thinning in young coniferous stands, thinning systems have been developed in the past few years which permit the use of modern harvesters and logging machines. In the spring of 1973 a thinning experiment was established in the forest district Olpe, to examine the influence of largely mechanical cuttings on the increament of young Norway spruce stands. The paper gives a report of this experiment, and mentions the results of similar thinning experiments in the discussion. In conclusion, with regard to these scientific findings and to the thinning rules of the state forestry administrations, recommendations for the treatment of young spruce stands are given


Доп.точки доступа:
Bjerg, N.
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634.9
S88

    World timber
[Текст] : trends and Prospects / T. Streyffert. - Stockholm : Almqvist and Wiksell, 1958. - 245 с. : рис., табл. - 30.00 р.
УДК

Кл.слова (ненормированные):
cuttings -- forest products -- consumption -- world forest resources

Аннотация: The book deals with the study of forest resources and markets for forest products in all the principal regions of the world. The forecast made of future supply and demand for wood on the basis of certain specified assuymptions is held to be of special interest, as in no other field of man's economy production of an important raw-material is such a long-time proposition. Such forecast can only serve as a guide.

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634.9
B 67

    The significance of initial adventitious roots in populus and the effect of certain factors on their development
[Текст] / W.J. Bloomberg ; Canada Department of Forestry. - Ottawa : Forest Entomology and Pathology Branch, 1963. - 11 с. : tables. - (Forest Entomology and Pathology Branch Contribution / Canada Department of Forestry ; 903). - Библиогр: p. 11. - 0.02 р.
УДК

Кл.слова (ненормированные):
populus%shoots%Canada

Аннотация: The present paper describes the results of experiments which were carried out to assess the relative importance of initial roots, and to investigate the effects of the following factors on their development: moisture content of the cutting, temperature, location in the parent shoot from which the cutting was taken, date of collection of cuttings, poplar variety, and the position in which the cutting was placed

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631.4
W 68

    Forest soils
[Текст] : their properties and relation to silviculture / S.A. Wilde. - New York : The Ronald Press Company, 1958. - 537 с. : figures + tables. - Библиогр: p.497-517. - 3-40 р.
УДК

Кл.слова (ненормированные):
tree growth%soil science

Аннотация: This book was made an attempt to take full account of three recent developments in forest practice: a large scale use of chemicals in the production of nursery stock and in other phases of silviculture; insufficient increament of stands and plantations on soils of depleted fertility; and erratic results obtained with partial cuttings conducted according to the empirical rules of silvicultural art.The successful handling of these problems requires not only a grasp of technicalities, but also a knowledge of basic relationships, a knowledge of basic relationships, a knowledge which allows the analytical information to be synthesized into a conclusion of practical significance.

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58
S24

    Leaf temperature in relation to the influence of wind on transpiration of plants I
[Text] / T. Satoo // Bulletin of the Tokyo University Forests. - 1951. - № 39. - С. 31-54. - Библиогр.: с. 53
УДК

Кл.слова (ненормированные):
seedlings, cuttings

Аннотация: The writer who carried out some experiments using water cultured plants in winter observed that, when water temperature was higher, transpiration rates of rooted cuttins of Sugi (Cryptomeria japonica D. Don) were influenced not so much by wind and the rates of seedlings of Sirakasi (Quercus myrsinaefolia Blume) were decreased by wind; while transpiration rate of Sugi was increased by wind and the rate of Sirakasi was not much affected when water temperature was lower. He presumed that the effect of wind on leaf temperature and evaporation, and the influence of temperature of evaporating surface on evaporation are combined together and the combination is observed as the results. To make clear these presumption, some further studies were carried out.

674
P51

    Yield of clear cuttings from lower grades of eastern white pine
[Text] / F.J. Petro, F.M. Lamb. - Ottawa : Minister of Forestry and Rural Development, 1968. - 14 p. : рис., табл. - (Forestry Branch Departmental Publication ; № 1227). - eng. - Библиогр. в конце ст. - 0.20 р.
УДК

Кл.слова (ненормированные):
frequency distribution -- correlation -- defects

Аннотация: This study was designed to illustrate: yield and frequency distribution of cutting sizes by grade; correlation of the length and width of the board with the length and width of the potencial cuttings; effects of selected defects on cutting yields; and, effect of knot frequency on average cutting length.


Доп.точки доступа:
Lamb, F.M.
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06
U88

    Partial cuttings in Northern Hardwoods of the Lake States: Twenty-year experimental results
[Text] : доклад, тезисы доклада / F.H. Eyre, W.M. Zillgitt. - Washington : United States Department of Agriculture, 1953. - 123 p. : рис., табл. - (Technical Bulletin ; № 1076). - eng. - Библиогр.: с. 111-117. - 1.00 р.
УДК

Кл.слова (ненормированные):
characteristics of hardwood -- management of mature stands -- treatment of 2nd growth

Аннотация: The work deals with characteristics of the northern hardwood forest, ecological position, reproductive capacity, and species characteristics, managemnet of mature stands, growth and mortality under different kinds of cuttings, treatment of second growth, possibilities of commercial thinnnings and improvement of cuttings


Доп.точки доступа:
Zillgitt, W.M.
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502
T 44

    The carbon budget of the Canadian forest sector: Phase 1
[Текст] : сборник научных трудов / W. A. Kurz [и др.]. - Edmonton : Forestry Canada, Northwest region, Northern Forestry Centre, 1992. - 93 с. : ил., табл. - (Information report; NOR-X-326). - ISBN 0-662-19913-8 : Б. ц.
УДК

Аннотация: The first phase of this study consisted of the development of a computer modeling framework and the use of published information to establish the sector's current role as a net source or a net sink of atmospheric carbon. The framework includes age-dependent carbon sequestration by living forest biomass, net detrital litter fall of carbon to the forest floor, subsequent accumulation and decomposition release an three soil compartments, retention of carbon in manufactured products derived from harvested forest biomass, and burning of forest biomass for energy. There is explicit representation of the role of ecosystem disturbances, such as fire, insect-induced stand mortality, and harvesting (clear-cutting, and slash burning, and partial cuttings), as they affect carbon releases and transfers to the forest floor and to the forest product sector.


Доп.точки доступа:
Kurz, W.A.; Apps, M.J.; Webb, T.M.; McNamee, P.J.
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