Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

: материалы временных коллективов / V. I. Kharuk // Water, air & soil pollution. - 1995. - Vol. 82, № 1-2. - С. 483-497. - Библиогр. в конце ст.
Аннотация: Our findings have shown that the spectral characteristics of aspen bark differ considerably from the "grey body" representations typically utilised in radiative transfer models. Also, since the bark and leaf canopy fractions have different C assimilation capacities, the partitioning of canopy Chl into leaf and bark strata should improve C assimilation estimates. Remote sensing technology must be relied upon, especially in vast and largely in accessible regions such as the boreal biome, for landscape- and regional-scale studies of C budgets. In these studies, estimates of forest productivity and C exchange currently rely on spectral indices obtained from remote satellite/aircraft sensors; these spectral ratios are used to indirectly estimate C assimilation through correlation with chlorophyll and photosynthetic capacity.

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Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036 Красноярск, Академгородок 50/28

Доп.точки доступа:
Kharuk, Vyacheslav Ivanovich; Харук Вячеслав Иванович
Имеются экземпляры в отделах:
Арх (04.05.2007г. (1 экз.) - Б.ц.) - свободны 1

: материалы временных коллективов / K. Takayoshi, K. Satoshi, O. V. Masyagina // Eurasian Journal of Forest Research. - 2007. - Vol. 10-1. - С. 115-119. - Библиогр. в конце ст.
Аннотация: Dynamics of nitrogen in leaves of trees and seedlings of deciduous broad-leaf species were studied for improving forest management. The photosynthetic traits of canopy leaves of diciduous broad-leaved trees were measured using a canopy tower. There was a clear positive correlation between leaf nitrogen content and light saturated photosynthetic rate at sunny canopy. As reflecting the shoot development pattern, leaf senescence began from the inner part of the crown in early successional species, by contrast leaf senescence process commences from either the outer or top portion of the crown in late successional species. For regenerated seedlings in forest floor, seasonal change in the allocation pattern of leaf nitrogen coincided with the changing of light conditions through the leaf phenology of upper canopy. In light limited condition, nitrogen was allocated to chlorophyll while it allocated to more to photosynthetic carbon fixation, i.e. Rubisco in strong light condition. Nitrogen allocated was affected more by light to CO2 condition that was found in birch and beech seedlings with a FACE system.

Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок, 50, стр., 28

Доп.точки доступа:
Takayoshi, K.; Такаёши К.; Satoshi, K.; Сатоши К.; Masyagina, Oksana Viktorovna; Масягина, Оксана Викторовна
Имеются экземпляры в отделах:
ЧЗ (27.06.2007г. (1 экз.) - Б.ц.) - свободны 1

: материалы временных коллективов / M. A. Korets [и др.] // Environmental change in Siberia: earth observation, field studies and modelling. - Dordrecht et. al. : Springer, 2010. - С. 3-19. - Библиогр. в конце ст.
Аннотация: Envisat-MERIS and SPOT Vegetation satelitte data were tested for estimation of vegetation cover disturbance caused by fire and industrial pollution in central and northern Siberia test sites, respectively. MERIS data were used to assess forest disturbance levels on burned sites in Angara region. Chlorophyll indexes (REP and MTCI) were found to allow identifying up to five forest disturbance levels due to high space-borne sensor resolution and sensitivity to chlorophyll content of vegetation. The current vegetation condition was assessed using MTCI index in the northern (Norilsk) test region. The lowest index values calculated for the most severely disturbed vegetation near Norilsk were found to correlate with sulphur concentrations in larch and spruce needles. Another approach to estimating spatial and temporal trends of vegetation condition used the 1998-2005 SPOT-Vegetation satellite data. The relationships obtained between MTCI, NDVI values, and forest mortality were based upon to map the 1998-2005 forest degradation zone dynamics in the northern test site.

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Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок, 50/28

Доп.точки доступа:
Korets, Mikhail Anatol'yevich; Корец, Михаил Анатольевич; Ryzhkova, Vera Alexandrovna; Рыжкова, Вера Александровна; Danilova, Irina Valer'yevna; Данилова, Ирина Валерьевна; Sukhinin, Anatoly Ivanovich; Сухинин, Анатолий Иванович; Bartalev, S.A.; Барталев С.А.

/ I. L. Milyutina, N. E. Sudachkova, L. I. Romanova // Contemp. Probl. Ecol. - 2013. - Vol. 6, Is. 2. - P149-155, DOI 10.1134/S199542551302011X. - Cited References: 29 . - 7. - ISSN 1995-4255РУБ Ecology

Аннотация: The effect of stand density on the antioxidant system of Scots Pine (Pinus silvestris L.) and Siberian Pine (Pinus sibirica Du Tour) was studied. The dynamics of concentrations of chlorophyll, hydrogen peroxide, glutathione, ascorbic acid, and dehydroascorbic acid were investigated during the vegetation period. In addition, the activities of superoxide dismutase, catalase, peroxidase, glutathione reductase, and ascorbate peroxidase were observed in the 1-year needles of 26-year-old trees with an initial stand density of 0.5 and 128 thousand individuals ha(-1).

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[Milyutina, I. L.
Sudachkova, N. E.
Romanova, L. I.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Milyutina, I.L.; Sudachkova, N.E.; Romanova, L.I.

[Text] / V. I. KHARUK [et al.] ; ed. N ROCK, // IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION. Ser. IEEE International Symposium on Geoscience and Remote Sensing IGARSS : IEEE, 1994. - International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) (AUG 08-12, 1992, PASADENA, CA). - P973-975. - Cited References: 0 . - 3. - ISBN 2153-6996. - ISBN 0-7803-1497-2РУБ Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences + Oceanography + Remote Sensing


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Держатели документа:
SUKACHEV FOREST INST, KRASNOYARSK, RUSSIA
Доп.точки доступа:
KHARUK, V.I.; MORGUN, V.N.; THEISEN, A.F.; ROCK, B.N.; WILLIAMS, D.L.; ROCK,, N \ed.\

[Text] / N. E. Sudachkova, I. L. Milyutina, L. I. Romanova // Russ. J. Ecol. - 2009. - Vol. 40, Is. 6. - P387-392, DOI 10.1134/S1067413609060022. - Cited References: 26. - This study was supported by the Russian Foundation for Basic Research, project nos. 07-04-00199 and KKFN 07-04-96816. . - 6. - ISSN 1067-4136РУБ Ecology

Аннотация: The impact of long-term seasonal soil freezing, drought, and waterlogging on the rhizosphere of young Scots pine trees (Pinus sylvestris L., age class 1) has been simulated in experiments. The results have shown that cold stress exposure leads to reduction of the rates of linear and radial tree growth and of chlorophyll content in needles, a shift in the peak of starch content, and initiation of free amino acid deposition in the aboveground plant parts. Drought activates utilization of carbohydrate reserves and amino acid accumulation in the root bast, whereas soil waterlogging stimulates deposition of carbohydrates but causes a decrease in the levels of chlorophyll and amino acids in all plant tissues.

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Держатели документа:
[Sudachkova, N. E.
Milyutina, I. L.
Romanova, L. I.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Sudachkova, N.E.; Milyutina, I.L.; Romanova, L.I.; Russian Foundation for Basic Research [07-04-00199]; KKFN [07-04-96816]

[Text] / M. . Slot [et al.] // Tree Physiol. - 2005. - Vol. 25, Is. 9. - P1139-1150. - Cited References: 37 . - 12. - ISSN 0829-318XРУБ Forestry

Аннотация: Regeneration patterns of Pinus sylvestris L. juveniles in central Siberian glades were studied in relation to cold-induced photoinhibition. Spatial distribution of seedlings in different height classes revealed higher seedling densities beneath the canopy than beyond the canopy, and significantly higher densities of seedlings < 50 cm tall on the north side of the trees. These patterns coincided with differences in light conditions. Compared with plants on the north side of canopy trees (north-exposed), photosynthetic photon flux (PPF) received by plants on the south side of canopy trees (south-exposed) was always higher, making south-exposed plants more susceptible to photoinhibition, especially on cool mornings. Chlorophyll fluorescence data revealed lower photochemical efficiency and increased non-photochemical quenching of small (20-50 cm in height), south-exposed seedlings from spring to early autumn, indicating increased excitation pressure on photosynthesis. Maximum rate of oxygen evolution was less in south-exposed plants than in north-exposed plants. Increased pools of xanthophyll cycle pigments and formation of the photoprotective zeaxanthin provided further evidence for the higher susceptibility to photoinhibition of south-exposed seedlings. A linear mixed model analysis explained many of the physiological differences observed in seedlings according to height class and aspect with early morning temperature and PPF as predictors. The link between photoinhibition and differential distribution of seedlings by height class suggests that photoinhibition, together with other environmental stresses, decreases the survival of small, south-exposed P sylvestris seedlings, thereby significantly affecting the regeneration pattern of central Siberian pine glades.

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Держатели документа:
Univ Wageningen & Res Ctr, Forest Ecol & Forest Management Grp, NL-6700 AH Wageningen, Netherlands
Princeton Univ, Dept Ecol & Evolutionary Biol, Princeton, NJ 08544 USA
Russian Acad Sci, Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
Max Planck Inst Biogeochem, D-07745 Jena, Germany

Доп.точки доступа:
Slot, M...; Wirth, C...; Schumacher, J...; Mohren, GMJ; Shibistova, O...; Lloyd, J...; Ensminger, I...

[Text] / I. . Ensminger [et al.] // Glob. Change Biol. - 2004. - Vol. 10, Is. 6. - P995-1008, DOI 10.1111/j.1365-2486.2004.00781.x. - Cited References: 57 . - 14. - ISSN 1354-1013РУБ Biodiversity Conservation + Ecology + Environmental Sciences

Аннотация: During winter and early spring, evergreen boreal conifers are severely stressed because light energy cannot be used when photosynthesis is pre-empted by low ambient temperatures. To study photosynthetic performance dynamics in a severe boreal climate, seasonal changes in photosynthetic pigments, chloroplast proteins and photochemical efficiency were studied in a Scots pine forest near Zotino, Central Siberia. In winter, downregulation of photosynthesis involved loss of chlorophylls, a twofold increase in xanthophyll cycle pigments and sustained high levels of the light stress-induced zeaxanthin pigment. The highest levels of xanthophylls and zeaxanthin did not occur during the coldest winter period, but rather in April when light was increasing, indicating an increased capacity for thermal dissipation of excitation energy at that time. Concomitantly, in early spring the D1 protein of the photosystem II (PSII) reaction centre and the light-harvesting complex of PSII dropped to their lowest annual levels. In April and May, recovery of PSII activity, chloroplast protein synthesis and rearrangements of pigments were observed as air temperatures increased above 0degreesC. Nevertheless, severe intermittent low-temperature episodes during this period not only halted but actually reversed the physiological recovery. During these spring low-temperature episodes, protective processes involved a complementary function of the PsbS and early light-induced protein thylakoid proteins. Full recovery of photosynthesis did not occur until the end of May. Our results show that even after winter cold hardening, photosynthetic activity in evergreens responds opportunistically to environmental change throughout the cold season. Therefore, climate change effects potentially improve the sink capacity of boreal forests for atmospheric carbon. However, earlier photosynthesis in spring in response to warmer temperatures is strongly constrained by environmental variation, counteracting the positive effects of an early recovery process.

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Держатели документа:
Max Planck Inst Biogeochem, D-07701 Jena, Germany
Umea Univ, Dept Plant Physiol, S-90187 Umea, Sweden
Mt Allison Univ, Sackville, NB E4L 1G7, Canada
Umea Univ, Dept Biochem, S-90187 Umea, Sweden
Russian Acad Sci, Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Ensminger, I...; Sveshnikov, D...; Campbell, D.A.; Funk, C...; Jansson, S...; Lloyd, J...; Shibistova, O...; Oquist, G...

/ V. I. Kharuk [et al.] // Remote Sensing of Environment. - 1994. - Vol. 47, Is. 1. - P98-105 . - ISSN 0034-4257
Аннотация: Induction kinetics of chlorophyll fluorescence (the Kautsky effect) and delayed fluorescence (DF) of some cold climate species were studied in both laboratory and in situ experiments to assess their vlaue as indicators of plant health. Experiments included studies of natural variability of fluorescence in connection with the seasonal leaf maturation process, as well as the influence of environmental stress factors, such as ozone. It was found that parameters of induction curves (normalized variable fluorescence, time of its half decrease) could be used as indicators of plant health. No significant differences have been elicited between the information content of the Kautsky effect and induction curves of DF as tools for remote sensing. It is suggested that measurements of the single decay curves of DF are preferable for remote estimation of photosynthetic capacity. В© 1994.

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Держатели документа:
Sukachev Forest Institute, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Krasnoyarsk State Agricultural University, Krasnoyarsk, Russian Federation
University of New Hampshire, Institute for the Study of Earth, Oceans, and Space, Durham, United States
NASA / Goddard Space Flight Center, Laboratory for Terrestrial Physics, Biospheric Sciences Branch, United States

Доп.точки доступа:
Kharuk, V.I.; Morgun, V.N.; Rock, B.N.; Williams, D.L.

/ N. E. Sudachkova [et al.] // Contemp. Probl. Ecol. - 2016. - Vol. 9, Is. 5. - P608-616, DOI 10.1134/S1995425516050152 . - ISSN 1995-4255
Аннотация: Controlled burning has been carried out to stimulate moderate ground fire in the Scots pine (Pinus sуlvestris L.) stand (age class I) in the Krasnoyarsk forest steppe at the beginning of the growing season. The structure of annual rings and trophic supply, as well as the cambial zone antioxidant system condition and the content of photosynthetic pigments in the needles of dominant and suppressed trees in the experimental and control plots, were studied 3 h, 5 days, and 2.5 months after the fire. The fire narrowed the annual ring width, since the number and size of early and late tracheids decreased. The primary reaction to pyrogenic heat shock (sharp reduction of chlorophyll content in needles and manifestation of oxidative stress in the stem cambial zone) was an elevated level of hydrogen peroxide and activity of most antioxidant enzymes and a reduction in the nonstructural carbohydrates pool. Restoration of the cambium function after the fire was promoted by an increased activity of amylase, invertase, and peroxidase. © 2016, Pleiades Publishing, Ltd.

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Держатели документа:
Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/28, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Sudachkova, N. E.; Romanova, L. I.; Astrakhantseva, N. V.; Novoselova, M. V.; Kosov, I. V.

/ I. G. Gette [и др.] // Russ. J. For. Sci. - 2017. - Is. 6. - С. 437-445, DOI 10.7868/S0024114817060067 . - ISSN 0024-1148
Аннотация: We studied the effect of sublethal temperatures, far exceeding a photosynthetic optimum, on assimilatory apparatus of Scots pine (Pinus sylvestris L.) during recovery after surface fire. We tracked the quantitative composition of pigment complex, the heat resistance, and the rate of recovery of photosynthetic activity in pine forests growing in forest-steppe in similar climatic and soil conditions, and having various age of fire disturbance. The needles of the Scots pine differed in heat resistance, as shown by the chlorophyll fluorescence. The heat stress has configured physiological processes and formed positive acclimation. We show that longevity of recovery period controls reparation of photosynthetic apparatus. The heat stress of shoots during sleeper fire induces heat resistance of buds, which generate the heat resistant needles over the following growing season. © 2018, Izdatel'stvo Nauka. All rights reserved.

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Держатели документа:
Siberian Federal University, Svobodny ave. 79, Krasnoyarsk, Russian Federation
Forest Institute, Siberian Branch of the Russian Academy of Sciences, Academgorodok 50 bldg. 28, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Gette, I. G.; Kosov, I. V.; Pakhar’Kova, N. V.; Bezkorovainaya, I. N.

/ M. A. Korets [et al.] // . - 2010. - Vol. 40. - P3-19, DOI 10.1007/978-90-481-8641-9_1 . -
Аннотация: Envisat-MERIS and SPOT Vegetation satellite data were tested for estimation of vegetation cover disturbances caused by fire and industrial pollution in central and northern Siberian test sites, respectively. MERIS data were used to assess forest disturbance levels on burned sites in Angara region. Chlorophyll indexes (REP and MTCI) were found to allow identifying up to five forest disturbance levels due to high space-borne sensor resolution and sensitivity to chlorophyll content of vegetation. A comparison of these chlorophyll indexes revealed that MTCI to show chlorophyll contents fairly precisely and to be useful for quantifying and mapping forest damage levels on burns. The current vegetation condition was assessed using MTCI index in the northern (Norilsk) test region. The lowest index values calculated for the most severely disturbed vegetation near Norilsk were found to correlate with sulphur concentrations in larch and spruce needles. Another approach to estimating spatial and temporal trends of vegetation condition used the 1998–2005 SPOT-Vegetation satellite data. The relationships obtained between MTCI, NDVI values, and forest mortality were based upon to map the1998–2005 forest degradation zone dynamics in the northern test site. © 2010, Springer Science+Business Media B.V.

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Держатели документа:
Sukachev Institute of Forest (SIF), 50/28, Akademgorodok street, Krasnoyarsk, 660036, Russian Federation
Space Research Institute (IKI), 84/32 Profsoyuznaya street, Moscow, 117997, Russian Federation

Доп.точки доступа:
Korets, M. A.; Ryzhkova, V. A.; Danilova, I. V.; Sukhinin, A. I.; Bartalev, S. A.

/ I. G. Gette [et al.] // J. For. Res. - 2019, DOI 10.1007/s11676-019-00990-1 . - Article in press. - ISSN 1007-662X
Аннотация: During a forest fire, plants are affected by high temperatures causing stress. At the time of burning, it is difficult to record temperature changes in tree crowns and the associated effects on photosynthesis. This paper presents the results of modelling a high-temperature effect simulating a convective flow from a ground fire. Evaluation of the response was carried out by the parameters of rapid fluorescence (Fv/Fm, ETR), the state of the pigment complex, and the relative water content in the needles. To characterize the degree of heat endurance and short-term effects concerning thermal damage, saplings of Scots pine (Pinus sylvestris L.) were used at different times during the growing season (June, July, August, September). Experimental heating at 55 °C lasted for 5 and 10 min. There were different levels of heat resistance by the needles. Data in June show that heating of the saplings significantly suppressed photosynthesis. In July, August, and September, the photochemical quantum yield (Fv/Fm) was restored to 75% and 60% from the initial level after 5- and 10-min heating, respectively. The electron transport rate (ETR) for saplings in September was restored to their initial level within 3 days after a short heat exposure. Restoration of the photosynthetic activity in needles was observed after a 5-min impact, but by the end of the study period, restoration had not reached control values. A longer heating of 10 min resulted in an irreversible suppression of photosynthesis and destruction of the photosynthetic apparatus, as evidenced by the decrease in the number of photosynthetic pigments. © 2019, Northeast Forestry University.

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Держатели документа:
Siberian Federal University, 79 Svobodny, Krasnoyarsk, 660041, Russian Federation
Sukachev Institute of Forest SB RAS, Federal Research Center “Krasnoyarsk Science Center of SB RAS”, 50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Gette, I. G.; Pakharkova, N. V.; Kosov, I. V.; Bezkorovaynaya, I. N.

/ I. G. Gette, N. V. Pakharkova, I. V. Kosov, I. N. Bezkorovaynaya // J. For. Res. - 2020. - Vol. 31, Is. 5. - P1489-1497, DOI 10.1007/s11676-019-00990-1. - Cited References:60 . - ISSN 1007-662X. - ISSN 1993-0607РУБ Forestry

Аннотация: During a forest fire, plants are affected by high temperatures causing stress. At the time of burning, it is difficult to record temperature changes in tree crowns and the associated effects on photosynthesis. This paper presents the results of modelling a high-temperature effect simulating a convective flow from a ground fire. Evaluation of the response was carried out by the parameters of rapid fluorescence (Fv/Fm, ETR), the state of the pigment complex, and the relative water content in the needles. To characterize the degree of heat endurance and short-term effects concerning thermal damage, saplings of Scots pine (Pinus sylvestrisL.) were used at different times during the growing season (June, July, August, September). Experimental heating at 55 degrees C lasted for 5 and 10 min. There were different levels of heat resistance by the needles. Data in June show that heating of the saplings significantly suppressed photosynthesis. In July, August, and September, the photochemical quantum yield (Fv/Fm) was restored to 75% and 60% from the initial level after 5- and 10-min heating, respectively. The electron transport rate (ETR) for saplings in September was restored to their initial level within 3 days after a short heat exposure. Restoration of the photosynthetic activity in needles was observed after a 5-min impact, but by the end of the study period, restoration had not reached control values. A longer heating of 10 min resulted in an irreversible suppression of photosynthesis and destruction of the photosynthetic apparatus, as evidenced by the decrease in the number of photosynthetic pigments.

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Держатели документа:
Siberian Fed Univ, 79 Svobodny, Krasnoyarsk 660041, Russia.
Krasnoyarsk Sci Ctr SB RAS, Sukachev Inst Forest SB RAS, Fed Res Ctr, 50 Akademgorodok, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Gette, I. G.; Pakharkova, N., V; Kosov, I., V; Bezkorovaynaya, I. N.

[Текст] / В. В. Стасова, Л. Н. Скрипальщикова, Н. В. Астраханцева, А. П. Барченков // Лесной журнал. - 2023. - № 3. - С. 35-47, DOI 10.37482/0536-1036-2023-3-35-47 . - ISSN 0536-1036

ГРНТИ

68.47.03

Аннотация: Изучено содержание фотосинтетических пигментов в листьях березы повислой (Betula pendula Roth.) в условиях техногенных нагрузок и в фоновых условиях. Исследования проводили в березняках разнотравного типа леса в пригородной зоне г. Красноярска. Древостои, испытывающие техногенные нагрузки, расположены к востоку от города по направлению основного переноса воздушных масс, фоновые - в северном и западном направлениях от города, техногенная нагрузка на эти древостои минимальна. Содержание фотосинтетических пигментов определяли в этанольных экстрактах, расчет проводили на 1 г абсолютно сухой массы листьев. Аккумуляцию пыли листовой поверхностью оценивали по методике Ж. Детри (1973). В промытых листьях определяли содержание ионов цинка, свинца, алюминия и фтора. Показано, что содержание хлорофилла а в листьях берез из условно чистых мест произрастания несколько ниже, чем в листьях из древостоев, подвергающихся техногенным нагрузкам. Содержание хлорофилла b в листьях берез из разных мест произрастания оказалось в 2,5-3 раза ниже, чем хлорофилла а, и сопоставимо с содержанием каротиноидов. Общее содержание хлорофиллов колебалось от 5,4 до 7,3 мг/г абсолютно сухой массы, соотношение форм хлорофиллов - от 2,5 до 3, отношение суммы содержания хлорофиллов к суммарному содержанию каротиноидов - от 3,4 до 3,8. При увеличении пылевой нагрузки росло содержание всех фотосинтетических пигментов. Накопление ионов цинка в клетках листа березы отрицательно сказывалось на содержании пигментов, особенно хлорофилла а, но с соотношением пигментов не коррелировало. Значимой корреляции содержания свинца и фотосинтетических пигментов не установлено. При увеличении концентрации алюминия в листьях количество хлорофиллов и каротиноидов достоверно возрастало, связи уровня алюминия с соотношением пигментов не обнаружено. Между содержанием фтора в листовой массе и количеством разных форм хлорофилла достоверных корреляций не найдено. Полученные результаты свидетельствуют об адаптивной реакции фотосинтетического аппарата на присутствие поллютантов в концентрациях ниже пороговых значений
The content of photosynthetic pigments in silver birch leaves (Betula pendula Roth.) is studied in areas with technogenic load and in baseline conditions. The research is performed in a forb type of birch forest in the suburbs of Krasnoyarsk. The wood stands exposed to a high level of technogenic pressure are located to the east of the city in the prevailing direction of air mass movement. The reference stands are under the least technogenic pollution and grow in western and northern areas of the city. The photosynthetic pigments are determined in ethanol extracts, calculated per 1 g of absolute dry mass (a.d.m.) of the leaves. A level of dust deposition on leaf surfaces is evaluated according to the method of J. Detrie (1973). The amounts of zinc, lead, aluminum, and fluorine ions are estimated in the washed leaves. It is found that the content of chlorophyll a inside the birch leaves from a relatively clean environment is slightly lower compared to the concentration in the leaves with the technogenic load. The chlorophyll b concentration is 2.5-3 times less than chlorophyll a and is close to the amount of carotenoids. The total chlorophyll content in birch leaves from different locations ranges from 5.4 to 7.3 mg/g a.d.m., the ratio of chlorophyll forms varies from 2.5 to 3, the proportion of net chlorophyll to carotenoids is between 3.4 and 3.8. As the level of dust increases, the content of the total photosynthetic pigments also rises. The accumulation of zinc ions in the birch leaf cells has a negative effect on pigment content, especially chlorophyll a, but doesn’t correlate with the ratio of the pigments. There has not been any correlation found between the lead and the photosynthetic pigments. It is noted that the rise in the concentration of aluminum significantly affects the contents of the chlorophylls and the carotenoids, while no relationship has been discovered between the concentration of aluminum and the proportion of the pigments. The relationship between fluorine and different forms of chlorophyll is absent as well. The results indicate the adaptive response of the photosynthetic system to the presence of pollutants in concentrations below the threshold values that are indicated in the literature

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Держатели документа:
ИЛ СО РАН : 660036, Красноярск, Академгородок, 50, стр. 28

Доп.точки доступа:
Скрипальщикова, Лариса Николаевна; Skripalshchikova, Larisa Nikolayevna; Астраханцева, Наталья Владимировна; Astrakhantseva Natal'ya Vladimirovna; Барченков, Алексей Павлович; Barchenkov Alexey Pavlovich; Stasova, Victoriya Victorovna