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

[Text] / T. . Kajimoto [et al.] // Tree Physiol. - 1999. - Vol. 19, Is. 12. - P815-822. - Cited References: 42 . - 8. - ISSN 0829-318XРУБ Forestry

Аннотация: We assessed above- and belowground biomass and net primary production (NPP) of a mature Larix gmelinii (Rupr.) Rupr. forest (240-280 years old) established on permafrost soils in central Siberia. Specifically, we investigated annual carbon budgets in roots in relation to root system development and availability of soil resources. Total stand biomass estimated by allometry was about 39 Mg ha(-1). Root biomass (17 Mg ha(-1)) comprised about 43% of total biomass. Coarse root (greater than or equal to 5 mm in diameter) biomass was about twice that of fine roots (< 5 mm). The aboveground biomass/root biomass ratio (T/R) of the larch stand was about unity, which is much less than that of other boreal and subalpine conifer forests. The proportion of fine roots in total root biomass (35%) was relatively high compared with other cold-climate evergreen conifer forests. Total NPP, defined as the sum of annual biomass increment of woody parts and needle biomass, was estimated to be 1.8 Mg ha(-1) year(-1). Allocation of total NPP to needle production was 56%. The proportion of total NPP in belowground production (27%) was less than for evergreen taiga forests. However, belowground NPP was probablyunderestimatedbecauserootmortalitywasexcluded.We conclude that L. gmelinii trees invested annual carbon gains largely into needle production or roots, or both, at the expense of growth of aboveground woody parts. This carbon allocation pattern, which resulted in the construction of exploitative root networks, appeared to be a positive growth response to the nutrient-poor permafrost soil of central Siberia.

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Tohoku Res Ctr, Forestry & Forest Prod Res Inst, Morioka, Iwate 0200123, Japan
Hokkaido Res Ctr, Forestry & Forest Prod Res Inst, Sapporo, Hokkaido 062, Japan
Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
Ryukoku Univ, Fac Intercultural Commun, Environm Studies Lab, Otsu, Shiga 52021, Japan

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Kajimoto, T...; Matsuura, Y...; Sofronov, M.A.; Volokitina, A.V.; Mori, S...; Osawa, A...; Abaimov, A.P.

[Text] / O. V. Menyailo [et al.] // Biol. Fertil. Soils. - 2003. - Vol. 38, Is. 1. - P1-9, DOI 10.1007/s00374-003-0631-4. - Cited References: 23 . - 9. - ISSN 0178-2762РУБ Soil Science

Аннотация: Little information is available about the factors controlling soil C and N transformations in natural tropical forests and tree-based cropping systems. The aim of this work was to study the effects of single trees on soil microbiological activities from plantations of timber and non-timber species as well as species of primary and secondary forests in the Central Amazon. Soil samples were taken in the primary forest under Oenocarpus bacaba and Eschweilera spp., in secondary regrowth with Vismia spp., under two non-timber tree species (Bixa orellana L. and Theobroma grandiflorum Willd.), and two species planted for wood production (Carapa guianensis Aubl. and Ceiba pentandra). In these soils, net N mineralization, net nitrification, denitrification potential, basal and substrate-induced respiration rates were studied under standardized soil moisture and temperature conditions. Individual tree species more strongly affected N transformations, particularly net nitrification, than C respiration. Our results suggest that soil C respiration can be affected by tree species if inorganic N becomes a limiting factor. We found a strong correlation among almost all microbiological processes suggesting close inter-relationship between C and N transformations in the studied soils. Correlation analysis between soil chemical properties and microbiological activities suggest that such strong inter-relationships are likely due to competition between the denitrifying and C-mineralizing communities for NO3-, which might be an important N source for the microbial population in the studied soils.

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Russian Acad Sci, Inst Forest, Siberain Branch, Krasnoyarsk 660036, Russia
Univ Bayreuth, Inst Soil Sci & Soil Geog, D-95447 Bayreuth, Germany
EMBRAPA, BR-69011970 Manaus, Amazonas, Brazil

Доп.точки доступа:
Menyailo, O.V.; Lehmann, J...; Cravo, M.D.; Zech, W...

[Text] / P. . Dijkstra [et al.] // Eur. J. Soil Sci. - 2006. - Vol. 57, Is. 4. - P468-475, DOI 10.1111/j.1365-2389.2006.00793.x. - Cited References: 36 . - 8. - ISSN 1351-0754РУБ Soil Science

Аннотация: The availability of C and N to the soil microbial biomass is an important determinant of the rates of soil N transformations. Here, we present evidence that changes in C and N availability affect the N-15 natural abundance of the microbial biomass relative to other soil N pools. We analysed the N-15 natural abundance signature of the chloroform-labile, extractable, NO3-, NH4+ and soil total N pools across a cattle manure gradient associated with a water reservoir in semiarid, high-desert grassland. High levels of C and N in soil total, extractable, NO3-, NH4+ and chloroform-labile fractions were found close to the reservoir. The delta N-15 value of chloroform-labile N was similar to that of extractable (organic + inorganic) N and NO3- at greater C availability close to the reservoir, but was N-15-enriched relative to these N-pools at lesser C availability farther away. Possible mechanisms for this variable N-15-enrichment include isotope fractionation during N assimilation and dissimilation, and changes in substrate use from a less to a more N-15-enriched substrate with decreasing C availability.

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No Arizona Univ, Dept Biol Sci, Flagstaff, AZ 86011 USA
RAS, Inst Forest SB, Krasnoyarsk 660036, Russia
No Arizona Univ, Colorado Plateau Stable Isotope Lab, Flagstaff, AZ 86011 USA
No Arizona Univ, Sch Forestry, Flagstaff, AZ 86011 USA
No Arizona Univ, Merriam Powell Ctr Environm Res, Flagstaff, AZ 86011 USA

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Dijkstra, P...; Menyailo, O.V.; Doucett, R.R.; Hart, S.C.; Schwartz, E...; Hungate, B.A.

/ U. Buntgen [et al.] // Nat. Commun. - 2019. - Vol. 10. - Ст. 2171, DOI 10.1038/s41467-019-10174-4. - Cited References:51. - We are grateful to everyone who participated in fieldwork, sample preparation, cross-dating and chronology development. Ulf Buntgen received funding received from "SustES - Adaptation strategies for sustainable ecosystem services and food security under adverse environmental conditions" (CZ.02.1.01/0.0/0.0/16_019/0000797). . - ISSN 2041-1723РУБ Multidisciplinary Sciences

Аннотация: It is generally accepted that animal heartbeat and lifespan are often inversely correlated, however, the relationship between productivity and longevity has not yet been described for trees growing under industrial and pre-industrial climates. Using 1768 annually resolved and absolutely dated ring width measurement series from living and dead conifers that grew in undisturbed, high-elevation sites in the Spanish Pyrenees and the Russian Altai over the past 2000 years, we test the hypothesis of grow fast-die young. We find maximum tree ages are significantly correlated with slow juvenile growth rates. We conclude, the interdependence between higher stem productivity, faster tree turnover, and shorter carbon residence time, reduces the capacity of forest ecosystems to store carbon under a climate warming-induced stimulation of tree growth at policy-relevant timescales.

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Держатели документа:
Univ Cambridge, Dept Geog, Cambridge CB2 3EN, England.
Swiss Fed Res Inst WSL, CH-8903 Birmensdorf, Switzerland.
Global Change Res Ctr, Brno 61300, Czech Republic.
Masaryk Univ, Brno 61300, Czech Republic.
Stockholm Univ, Dept Phys Geog, S-10691 Stockholm, Sweden.
Univ Cambridge, Dept Plant Sci, Cambridge CB2 3EA, England.
Johannes Gutenberg Univ Mainz, Dept Geog, D-55099 Mainz, Germany.
Siberian Fed Univ, Inst Humanities, Krasnoyarsk 660041, Russia.
Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Ecol & Geog, Krasnoyarsk 660041, Russia.
CSIC, IPE, Zaragoza 50059, Spain.
Univ Basel, Inst Bot, CH-4056 Basel, Switzerland.

Доп.точки доступа:
Buntgen, Ulf; Krusic, Paul J.; Piermattei, Alma; Coomes, David A.; Esper, Jan; Myglan, Vladimir S.; Kirdyanov, Alexander, V; Camarero, J. J.; Crivellaro, Alan; Korner, Christian; [CZ.02.1.01/0.0/0.0/16_019/0000797]