Сводный каталог книг

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Найдено документов в текущей БД: 63
   В37
   S70

Solid state physics. Advances in research and applications   Vol. 28
. - New York : Academic Press, 1955 - . / ed.: H. Ehrenreich, F. Seitz, D. Turnbull. - 1973. - XIV, 430 p. : il. - Bibiliogr. in the text. - Auth. ind.: p. 407-416. - Sub. ind.: p. 417-424. - Cumulative auth. ind., vols. 1-28: p. 425-430. - 15.75 р.
Перевод заглавия: Физика твердого тела. Успехи в исследовании и применении
    Содержание:
Weger, M. Some lattice and electronic properties of the β-tungstens / M. Weger, I. B. Goldberg. - P .1-177
Dalven, Richard. Electronic structure of PbS, PbSe, and PbTe / R. Dalven. - P .179-224
Lang, Norton D. The density-functional formalism and the electronic structure of metal surfaces / N. D. Lang. - P .225-300
Webb, M. B. Elastic scattering of low-energy electrons from surfaces / M. B. Webb, M. G. Lagally. - P .301-405
   Перевод заглавия: Физика твердого тела. Успехи в исследовании и применении
ГРНТИ
ББК В37


Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Ehrenreich, Henry \ed.\; Seitz, Frederick \ed.\; Turnbull, David \ed.\
Экземпляры всего: 1
ИФ-КФ (1)
Свободны: ИФ-КФ (1)
   В37
   S70

Solid state physics. Advances in research and applications   Vol. 38
. - New York : Academic Press, 1955 - . / ed.: H. Ehrenreich, D. Turnbull ; consult. ed. F. Seitz. - Orlando, 1984. - XIII, 390 p. : il. - Bibliogr. in the text. - Auth. ind.: p. 371-379. - Sub. ind.: p. 380-390. - ISBN 0-12-607738-X : 82.00 р.
Перевод заглавия: Физика твердого тела. Успехи в исследовании и применении
    Содержание:
Samara, G. A. High-pressure studies of ionic conductivity in solids / G. A. Samara. - P .1-80
Peeters, F. M. Theory of polaron mobility / F. M. Peeters, J. T. Devreese. - P .81-133
Callaway, J. Density functional methods: theory and applications / J. Callaway, N. H. March. - P .135-221
Wokaun, Alexander. Surface-enhanced electromagnetic processes / A. Wokaun. - P .223-294
Singh, Jai. The dynamics of excitons / J. Singh. - P .295-370
   Перевод заглавия: Физика твердого тела. Успехи в исследовании и применении
ГРНТИ
ББК В37


Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Ehrenreich, Henry \ed.\; Turnbull, David \ed.\; Seitz, Frederick \consult. ed.\
Экземпляры всего: 1
ИФ-КФ (1)
Свободны: ИФ-КФ (1)
   В31
   Б 70
В31 / Б 70-ИВМ-Фонд

    Теория матрицы плотности и ее приложения
: пер. с англ. / К. Блум ; пер. с англ. М. Ю. Новикова, Ю. Г. Рудого, под ред. Д. Н. Зубарева. - М. : Мир, 1983. - 248 с. : рис. - Библиогр.: с. 239-241. - Предм. указ.: с. 242-244. - Пер. изд. : Density Matrix Theory and Applications / Кarl Blum. - 2.10 р., 2.10 р.
    Содержание:
Спиновые состояния и матрица плотности для частиц со спином ½
Состояние поляризации и матрица плотности для фотонов
Связанные системы
Неприводимые компоненты матрицы плотности
Излучения поляризованных атомов. Квантовые биения
Теория электрон-фотонных угловых корреляций в атомной физике
Стационарное возбуждение
Влияния слабого магнитного поля
Квантовая теория релаксации
Прямое произведение
Мультиполи состояния связанных систем
Формулы теории углового момента
Эффективность измерительного прибора
Оператор рассеяния и оператор перехода
ГРНТИ
УДК
ББК В314.5 + В152.23

Аннотация: Монография известного физика из ФРГ содержит последовательное и доступное изложение теоретических основ метода матрицы плотности и его применений к проблемам квантовой электроники, атомной и молекулярной спектроскопии, физики необратимых процессов. Основные понятия подробно обсуждаются и иллюстрируются простыми примерами. Для физиков-теоретиков и экспериментаторов, занимающихся квантовой электроникой, лазерной спектроскопией, ядерной физикой, для студентов старших курсов и аспирантов соответствующих специальностей.

Держатели документа:
Институт физики им. Л.В. Киренского СО РАН
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44

Доп.точки доступа:
Новиков, М. Ю. \пер.\; Рудой, Ю. Г. \пер.\; Зубарев, Д. Н. \ред.\; Blum, Кarl
Экземпляры всего: 2
ИФ-КФ (1), ИВМ-Фонд (1)
Свободны: ИФ-КФ (1), ИВМ-Фонд (1)
   В37
   S89

    Strongly correlated systems: theoretical methods
/ eds.: A. Avella, F. Mancini. - Dordrecht [et al.] : Springer, 2012. - XXXI, 461 p. : il. - (Springer series in solid-state sciences, ISSN 0171-1873 ; 171). - Bibliogr. at the end of the chapters - Ind. - Ind.: p. 455-461. - ISBN 978-3-642-21830-9 : 330.00 р.
Перевод заглавия: Сильно коррелированные системы: теоретические методы
    Содержание:
The composite operator method (COM)
The pseudoparticle approach to strongly correlated electron systems
Density functional theory: a personal view
Projected wavefunctions and high Tс superconductivity
Ovchinnikov, Sergey. LDA+GTV method for band structure calculations in the strongly correlated materials / S. G. Ovchinnikov [и др.]. - P .143
Другие авторы: Gavrichkov V.A., Korshunov M.M., Shneyder E.I.
Projection operator method
Dynamical mean-field theory
Cluster perturbation theory
Dynamical cluster approximation
Self-energy-functional theory
Cluster dynamical mean field theory
Functional renormalization group for interacting
Two-particle-self-consistent approach for the hubbard
   Перевод заглавия: Сильно коррелированные системы: теоретические методы
ГРНТИ
ББК В371.1 + В373.3 + В368.373


оглавление

Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Avella, Adolfo \ed.\; Mancini, Ferdinando \ed.\; Shneyder, E. I.
Экземпляры всего: 1
ИФ-КФ (1)
Свободны: ИФ-КФ (1)
   В37
   D74

    High-field magnet with two-dimensional current density distribution
[Preprint]. № 728F / A. P. Doroshenko ; Russian Acad. of Sci., Sib. Branch, L.V. Kirensky Inst. of phys. - Красноярск : ИФ СО РАН, 1992. - 36 p. - Библиогр.: 8 назв. - 70 экз.
Перевод заглавия: Высокополевой магнит с двухразмерным распределением плотностей тока
   Перевод заглавия: Высокополевой магнит с двухразмерным распределением плотностей тока
ГРНТИ
ББК В373.34


Держатели документа:
Институт физики им. Л.В. Киренского СО РАН
Доп.точки доступа:
Дорошенко А. П.; Russian Academy of SciencesSiberian Branch RAS; L.V. Kirensky Institute of physics SB RAS
Экземпляры всего: 2
ИФ-Препр. (2)
Свободны: ИФ-Препр. (2)
   В37
   D33

    Phonon spectroscopy in disordered systems with long correlations and density of phonon modes in them
[Preprint]. № 636F / L. I. Deich ; USSR Acad. of Sci., Sib. Branch, L.V. Kirensky Inst. of phys. - Красноярск : ИФ СО АН СССР, 1990. - 18 p. - Библиогр.: 20 назв. - 250 экз.
Перевод заглавия: Фононная спектроскопия в неупорядоченных системах с дальнодействующими корреляциями и плотность фононных мод в них
   Перевод заглавия: Фононная спектроскопия в неупорядоченных системах с дальнодействующими корреляциями и плотность фононных мод в них
ГРНТИ
ББК В374


Держатели документа:
Институт физики им. Л.В. Киренского СО РАН
Доп.точки доступа:
Дейч, Леонид Исакович; USSR Academy of sciencesSiberian Branch; L.V. Kirensky Institute of physics
Экземпляры всего: 2
ИФ-Препр. (2)
Свободны: ИФ-Препр. (2)
   инГ511.2
   A10

    A matter of density: exploring the electron density concept in the chemical, biological, and materials sciences
[Текст] : сборник / ed. N. Sukumar. - Hoboken : Wiley, 2013. - X,318 p. : ill. ; 24 cm. - Bibliogr. at the end of the chapters. - Ind.: p. 313-318. - ISBN 978-0-470-76900-3 (в пер.) : 0.00
Перевод заглавия: Плотность вещества: пробная концепция электронной плотности в химии, биологии и материаловедении
   Перевод заглавия: Плотность вещества: пробная концепция электронной плотности в химии, биологии и материаловедении
ГРНТИ
ББК Г511.2я43 + В317.21 я43

Аннотация: Electron density is one of the fundamental concepts underlying modern chemistry and one of the key determinants of molecular structure and stability. It is also the basic variable of density functional theory, which has made possible, in recent years, the application of the mathematical theory of quantum physics to chemical and biological systems. With an equal emphasis on computational and philosophical questions, A Matter of Density: Exploring the Electron Density Concept in the Chemical, Biological, and Materials Sciences addresses the foundations, analysis, and applications of this pivotal chemical concept. The first part of the book presents a coherent and logically connected treatment of the theoretical foundations of the electron density concept. Discussion includes the use of probabilities in statistical physics; the origins of quantum mechanics; the philosophical questions at the heart of quantum theory, like quantum entanglement; and methods for the experimental determination of electron density distributions. The remainder of the book deals with applications of the electron density concept in the chemical, biological, and materials sciences. Contributors offer insights on how a deep understanding of the origins of chemical reactivity can be gleaned from the concepts of density functional theory. Also discussed are the applications of electron density in molecular similarity analysis and electron density-derived molecular descriptors, such as electrostatic potentials and local ionization energies. This section concludes with some applications of modern density functional theory to surfaces and interfaces.

оглавление


Доп.точки доступа:
Sukumar, N. \ed.\
Экземпляры всего: 1
ЦНБ-АБ (1)
Свободны: ЦНБ-АБ (1)
   Г534
   С 74

    Справочник по расплавленным солям. Т. 3. Физико-химические свойства двойных нитратных, нитритных и нитратно-нитритных систем
: справочное издание / пер. с англ. под ред. и с доп. А.Г. Морачевского. - Л. : Химия. Ленингр. отд-ние, 1974. - 237 с. : ил. - Библиогр.: с. 228-234. - Указ.: с. 235-236. - Пер. изд. : Molten Salts. V. 3. Nitrates, Nitrites, and Mixtures Electrical Conductace, Density, Viscosity, and Surface Tension Data. - 0.88 р.
ГРНТИ
УДК
ББК Г534


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ИХХТ-АБ (2)
Свободны: ИХХТ-АБ (2)
Physics, Condensed Matter
C74

    Comparison of the electronic structure of the Hubbard and t - J models within the cluster perturbation theory
/ V. I. Kuz'min, S. V. Nikolaev, S. G. Ovchinnikov // Phys. Rev. B. - 2014. - Vol. 90, Is. 24. - Ст. 245104, DOI 10.1103/PhysRevB.90.245104. - Cited References: 37. - This work is supported by RFBR (Grants No. 13-02-01395-a, No. 14-02-31677-mol-a, and No. 14-02-00186-a), the Ministry of Education and Science of Russia (Government Contract No. 3085, SibFU 2014 GF-2), and a grant of the Russian President (Grant No. NSh-2886.2014.2). . - ISSN 1098-0121. - ISSN 1550-235X
РУБ Physics, Condensed Matter

Аннотация: Electronic dispersion and density of states ( DOS) have been calculated for the Hubbard model and the t - J and t - J* models with three-site correlated hopping by the cluster perturbation theory. We have found a rather strong quantitative difference both in dispersion and DOS at all doping for the Hubbard and t - J models at the energy scale omega greater than or similar to t. The three-site correlated hopping addition results in an almost negligible difference for the Hubbard and t - J* models. Close to the Fermi energy, at the scale omega less than or similar to J, the electronic structure of all three models is similar. We have found the line of zeros of the Green function for the t J model that has been previously obtained for the Hubbard model by cellular dynamical mean-field theory calculations.

WOS

Держатели документа:
[Kuz'min, V. I.
Nikolaev, S. V.
Ovchinnikov, S. G.] SB RAS, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia
[Nikolaev, S. V.
Ovchinnikov, S. G.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН

Доп.точки доступа:
Kuz'min, V.I.; Nikolaev, S.V.; Ovchinnikov, S.G.; RFBR [13-02-01395-a, 14-02-31677-mol-a, 14-02-00186-a]; Ministry of Education and Science of Russia [3085, SibFU 2014 GF-2]; [NSh-2886.2014.2]
634.9
B 76

    Age distribution patterns in open boreal Dahurican larch forests of Central Siberia
[Текст]. V. 93. Forest Ecology and Management / A. Bondarev ; The Sukachev Institite of Forest SB RAS. - N.Y : Elsevier Science, 1997. - 205-214 с. : табл. - Б. ц.
Библиогр: p. 213
УДК

Кл.слова (ненормированные):
boreal forests -- structure -- stands

Аннотация: Tree age distribution determines stand size structure and is related to disturbance history and stand dynamics. Data are presented from 40 pure larch stands from six locations on the Taimyr peninsula and Evenk region in the northern open forests of Russian Siberia. A Weibull density function was used to describe actual age distribution and to simulate age distribution. All stands were found to have a multi-aged structure. The average coefficient of variation for age is about 48%. The range of tree ages exceed 400 years in the oldest forests. The patterns of age distribution change for different age groups. For the youngest stands (40-80 years old) the age distribution was leptocurtic and positively skewed, whereas for middle-aged forests (80-180 years old) it tended to be more mesokurtic and symmetric. In the oldest stands (more than 180 years old) the distribution had a platykurtic form. A high correlation was found between the Weibull function coefficients and the coefficient of age variation and for the mean age. The oldest forests were found in river valleys. Middle-aged forests occur more commonly on middle slopes and the youngest forests occupy top slopes and uplands. A more normal tree age distribution assumes a study area less damaged by forest fires than in the more southern parts of the boreal forest

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ИЛ-ИФ (1)
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O6
F 54

    Management of bushland vegetation using rainwater harvesting in Eastern Kenya
[Текст] : монография / V. Kaarakka ; The Finnish Society of Forest Science, The Finnish Forest Research Institute. - Helsinki : [б. и.], 1996. - 93 с. : ил. - (Acta Forestalia Fennica, ISSN 0001-5636 ; 253). - Библиогр.: с. 78-98. - ISBN 951-40-1539-8 : 5000.00 р.
УДК

Кл.слова (ненормированные):
Drylands -- land rehabilitation -- rainwater harvesting

Аннотация: Microcatchment water harvesting (MCWH) improved the survival and growth of planted trees on heavy soils in Eastern Kenya five to six years after planting. In the best method, the cross-tied furrow microcatchments, the main annual increments (MAI; based on the average biomass of living trees multiplied by tree density and survival) of the total and usable biomass in PROSOPIS JULIFLORA were 2787 and 1610 kg ha-1 a-1 respectively, when the initial tree density was 500 to 1667 trees per hegtare. Based on survival, the idigenous ACACIA HORRIDA, A. MELLIFERA and A. ZANZIBARICA were the most suitable species for planting using MCWH. When both survival and yield were considered, a local seed source of the introduced P.JULIFLORA was superior to all other species. The MAI in MCWH was at the best distinctly higher than that in natural vegetation (163-307 and 66-111 kg ha-1 a-1 for total and usable biomass respectively); this cannot satisfy the fuelwood demand of concentrated populations, such as towns or irrigation schemes. The density of seeds of woody species in the topsoil was 40.1 seeds m-2 in the ACACIA- COMMIPHORA bushland and 12.6 seeds m-2 in the zone between the bushland and the Tana riverine forest. Rehabilitation of woody vegetation using the soil seed bank alone proved difficult due to the lack of seeds of desirable species. The regeneration and dynamics of woody vegetation were also studied both in cleared and undisturbed bushland. A sub-type of ACACIA-COMMIPHORA bushland was identified as ACACIA REFICIENS bushland, in which the dominant COMMIPHORA species is C.CAMPESTRIS. Most of the woody species did not have even-aged populations but cohort structures that were skewed towards young individuals. The woody vegetation and the status of soil nutrients were estimated to recover in 15-20 years on Vertic Natrargid soils after total removal of above-ground vegetation

Экземпляры всего: 1
ИЛ-ИФ (1)
Свободны: ИЛ-ИФ (1)
634.9
A 74

    A comparison of stand density measurements for Ponderosa pine in the Southwest
[Текст]. 4 Arizona Forestry Notes. A comparison of stand density measurements for Ponderosa pine in the Southwest / R.R. Larson, C.O. Minor ; School of forestry, Northern Arizona University. - Flagstaff : Northern Arizona University, 1968. - 7 с. : tables. - бесплатно р.
Библиогр: p. 7
УДК

Кл.слова (ненормированные):
Ponderosa pine, stand density, measurements, USA



Доп.точки доступа:
Minor, C.O.
Экземпляры всего: 1
ИЛ-ИФ (1)
Свободны: ИЛ-ИФ (1)
634.9
D 48

    Die Verjungungsentwicklung der Buche (Fagus silvatica L.)
[Текст] : bericht einer langfristigen Beobachtung im Solling / A. Dohrenbusch. - Frankfurt am Main : J.D. Sauerlander's Verlag, 1990. - 70 с. - (Schriften aus der Forstlichen Fakultat der Universitat Gottingen und der Niedersachsischen Forstlichen Versuchsanstalt : bericht einer langfristigen Beobachtung im Solling ; 97). - 5.00 р.
Библиогр: S.66-67%ISBN 3-7939-5097-2
УДК

Кл.слова (ненормированные):
Buche (Fagus silvatica L.), Methoden, Boden, Deutschland

Аннотация: This book deals with the stand beech, their regeneration, seed quality, soils, plant densities. The results were discussed, especially concerning plant density, regeneration development and site preparation, chemical analyses of soil and leaves as well as seed quality

Экземпляры всего: 1
ИЛ-ИФ (1)
Свободны: ИЛ-ИФ (1)
634.9
L 63

    Untersuchungen an Buchenbestanden Nordwestdeutschlands uber die Variation der Rohdichte
[Текст] : монография / S. Lewark ; Universitat der Gottingen. - Frankfurt am Main : J.D. Sauerlander's Verlag, 1987. - 118 с. : табл. - (Schriften aus der Forstlichen fakultat der Universitat Gottingen und der Niedersachsischen Forstlichen Versuchsanstalt, ISSN 0344-5666 ; 88). - ger. - Библиогр.: с. 86-90. - ISBN 3-7939-5088-3 : 6.00 р.
УДК

Кл.слова (ненормированные):
Buchenbestanden -- Material und Methoden -- Variation

Аннотация: The present knowledge on the variation of wood density of beech and it's control is incomplete and contradictory inspite of a large number of investigations. This has been explained on one hand by the nature of this variation, on the other hand by inadequate methods and insufficient sample sizes. The systematic variation of wood properties within the stems and the use of frequency distributions of values of wood density have been discussed at some length.

Экземпляры всего: 1
ИЛ-ИФ (1)
Свободны: ИЛ-ИФ (1)
634.9
B 29

    Some interrelationships of silviculture and logging
[Текст] / G.L. Baskerville. - Ottawa : Canadian Department of Forestry Research Branch , 1965. - 7 с. : табл. - (Pulp and Paper Magazine of Canada / Department of Forestry, Research Branch ; june). - eng. - Библиогр.: с. 7. - 0.05 р.
УДК

Кл.слова (ненормированные):
silviculture%logging%density% methods%structure%growth

Аннотация: Data for natural stands of 700, 1000, 1500, 2000, 3000 and 5000 stem per acre are analyzed to show the influence of changing stand structure on both forest growth and cost harvesting. Inferences are drawn regarding the effect of thinning on stand growth and logging cost. It is noted that silvicultural control can be used only to produce more wood but also to produce a forest which is less costly to harvest.

Экземпляры всего: 1
ИЛ-ИФ (1)
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634.9T
B 76

    The influence of stand density on the correlation of stem diameter with crown width and height for lodgepole pine
[Текст] / G.M. Bonnor ; Canada Department of Forestry. - Ottawa : Forest Research Branch, 1964. - 347-349 с. + tables. - (Forest Research Branch Contribution / Canada Department of Forestry ; 618). - Библиогр: p. 349. - 0-05 р.
УДК

Кл.слова (ненормированные):
age%plots%site

Аннотация: A statistical comparison of eight lodgepole pine plots of different stand density but of similar site and age revealed that stand density did not influence the correlation of stem diameter with crown width and tree height.

Экземпляры всего: 1
ИЛ-Иф (1)
Свободны: ИЛ-Иф (1)
634.9T
C 58

    A mathematical expression for the growth of trees in their dependence on time and density of stocking
[Текст] / A.C. Cilliers, J.H. Van Wyk. - Capetown : Nasionale Pers, Beperk, 1938. - 36 с. : figure + tables. - Библиогр: p. 36. - 1-00 р.
УДК

Кл.слова (ненормированные):
increment%stand%thinning



Доп.точки доступа:
Van Wyk, J.H.
Экземпляры всего: 1
ИЛ-Иф (1)
Свободны: ИЛ-Иф (1)
634.9T
K 19

    On the external appearance of Sugi (Cryptomeria japonica) stems from the planted forest grown with different silvicultural treatment
[Текст] / T. Kano. - Tokyo : Government Forest Experiment Station, 1968. - 151-165 с. : figures + tables. - Библиогр: p. 164. - 0-15 р.
УДК

Кл.слова (ненормированные):
tree height%breast height diameter%degree

Аннотация: In this paper the author described the results of the studies on the external appearance of Sugi stems from the sample plots established in Yoshino, Nishikawa, Nakoso and Obi districts as they represent the Sugi forest grown with typical different silvicultural treatments. Outline of the sample plots is shown in Table 1. Results are as follows: 1. The coefficients of variance of the tree height in sample plots appears to become larger as spacing density of the plantation decreases (Table 6). 2. The height of trees from Nishikawa is significantly lower than that of all others under 20 years, and that of trees from Obi is significantly taller than others above 20 years. 3. The coefficient of variance of the breast height diameter of sample trees in the sample plots is minimum for the trees of Obi districts where the plantation spacing is the widest (Table 7). 4. The relation between tree ages and b. h. d. of sample trees. The b. h. d. of sample trees at the same age classes appears to become larger as plantation spacing widens (Fig. 3). 5. The range of variance of the relation between height and b. h. d. of the sample trees appears to become considerably narrower as the spacing of trees in forest widens, and in Obi districts these relations are considerably different from those in others (Fig. 4). 6. The degree of full-body of sample trees in different sample plots appears to be smaller as plantation spacing widens, but the effect on its variance within sample plots is not clear (Table 8). 7. The degree of full-body of sample trees rapidly decreases as tree age increases under 15-20 years, but beyond this critical age it is observed that degree of full-body remains almost constant in Yoshino and Obi, and that it increases slightly in Nakoso and significantly in Nishikawa respectively as tree age increases (Fig. 5). 8. The clear length and the percentage of clear length to tree height in the sample trees seem to become larger as plantation spacing narrows, but it is contrary in the case of the coefficient of variance for the percentage of clear length to tree height. 9. The percentage of clear length to tree height of sample trees generally tends to be larger at the same age classes as plantation spacing narrows (Fig. 8).

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634.9T
S 43

    Canadian forest inventory methods
[Текст] / H.E. Seely ; Canada Department of Forestry. - Ottawa : Department of Forestry, 1964. - 11 с. - Библиогр: В надзаг.:. - 0-05 р.
УДК

Кл.слова (ненормированные):
aerial photography%forest mapping%tree measurement

Аннотация: The subject is introduced with a reference to the employment of forest inventories in Canadafor the collection of important data on the forest resources, including information for use in forest management. It is stated that from an operational point of view the most important development in forest inventories in Canada during recent years has been the Federal-Provincial Forestry Agreements entered into initially in 1951. The special value of aerial photography, and advances made in its use in forestry, are emphasized. An indication of the dependence of forest inventories on surveying and mapping and of the construction and use of forest maps is provided. Photointerpretation for forestry purposes, including the determination of tree heights and the density of the forest stand, and recognition of tree species, is mentioned. In this connection the possibilities for special aerial photography are recognized. The approach to forest inventories through stratification and sampling is referred to, as are various sampling methods. Also stand volume tables and tree volume tables, based on variables ascertainable from the aerial photographs, are mentioned. Reference is made to current investigations in the use of large-scale aerial photographs for sampling purposes.

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634.9T
V 53

    Solar radiation available below thinned and unthinned balsam fir canopies
[Текст] / P.-E. Vezina ; Canada Department of Forestry, Forest Research Branch. - Ottawa : Canada Department of Forestry, 1965. - 15 с. : figures + tables. - (Forest Research Branch / Department of Forestrey, Forest Research Branch ; 1105). - Библиогр: p. 15. - 0-05 р.
УДК

Кл.слова (ненормированные):
experiment%methods

Аннотация: Solar radiation was measured during three months in the summer of 1961 by means of Bellani pyranometers below the canopy of three balsam fir stands, one unthinned and two recently thinned, in Quebec. Observations were made at three randomly selected stations representing average values at each plot. Radiation available below canopy was related to physical dimensions of stands. The average solar radiation beneath fir canopies showed values of 6,8, and 10 per cent of that in the open for stands of 7,600, 5,900, and 4,489 inches of stem density, respectively. Variations in the amount of solar radiation in the open did not change the average percentage of open radiation in the stands. However, with increasing amounts of radiation in the open the scatter of values around the mean percentage of open radiation decreased. It was estimated that thinnings that removed 12 and 36 per cent of the original stand basal area had the immediate effect of increasing the radiation intensity by 25 and 50 per cent.

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