Voronezh, Voronezh, Russian Federation
Exploring linkages between trees increment and meteorological elements is of great importance for understanding biological processes, assess of environmental determinants, defining growth and productivity of forest communities, forecasting growth in connection with changing climatic conditions. Dendroclimatic analysis can be used in planning and implementation of many forestry activities. The paper presents data on the effect of meteorological factors on the radial increment of English oak in isotopologues cultures originating from glague oak forest of serotinous variety. Dendrochronological analysis of radial growth was carried out in accordance with existing methodological developments. In the dynamics of radial growth of trees of English oak, periodicity is observed. 2-3-, 5-7-, 11-, 22-year cycles are seen more clearly. Growth depression is mainly due to the summer droughts with temperatures above average standards and rainfall less than average annual norms. Periods with high radial growth occur in years with high air temperatures and rainfall more than average standards. In terms of impact on the radial increment of English oak meteorological elements are arranged in the following order: hydrometric ratio; precipitation – autumn-winter, summer, annual; air temperature in the vegetation period of active growing season (April, May), summer, annual. Data on the influence of meteorological elements are confirmed by the results of analysis of variance. The highest power of the influence of the hydrothermal coefficient (HTC) is 0.39, with precipitation of the warm period of is, the sum of precipitation for the year of is, the lowest effect with temperature is 0.20. Between the air temperature and increment in the warm period there is an inverse relationship: the increase in air temperature reduces growth. Both excess of precipitation and the shortage contribute to the reduction of radial growth.
radial growth, relative index, analysis of variance, index of power of influence, width of annual rings.
Актуальность. Для сохранения ценных лесных ресурсов необходимы знания не только об их современном состоянии, но и об изменениях, которые происходили за более длительный период. В связи с этим возрастающую актуальность приобретают дендрохронологические исследования [2, 5, 6], которые могут быть использованы для прогнозирования прироста в связи с изменением климата [5-11]. Особенности прироста дуба черешчатого в зависимости от влияния различных метеорологических элементов изучали многие исследователи (Костин, 1968; Ефимов, 1974 и др.) [3, 4]. Однако следует отметить, что не всегда учитывались особенности прироста в различных лесорастительных условиях и у разных внутривидовых категорий дуба черешчатого: экотипов, эдафотипов, фенологических разновидностей.
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2. Bitvinsky T. T. Dendroklimaticheskiye issledovaniya [Dendroclimatic studies] / Gidrometeo-izdan. - [Moscow, Hydrometeo-issued.], 1974. - 172 p. (In Russian).
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4. Efimov Yu. P. Vliyaniye osadkov na prirost duba chereshchatogo ranney i pozdney form v tsentral'noy lesostepi [Influence of precipitation on growth of pedunculate oak in early and late forms in the Central forest-steppe zone]. Genetika, selektsiya i introduktsiya lesnykh po-rod. Voronezh. TSNIILGiS [Genetics, selection and introduction of forest's family. Voronezh. Nilges], 1974. vol. 1. - pp. 70 - 79. (In Russian).
5. Melekhov I. S. Znacheniye struktury godichnykh sloyov i yeyo dinamika v lesovodstve i dendroklimatologi [the importance of the structure of the annual layers and dynamics in forestry and dendroclimatology] Lesn. zhurnal [Lesn. journal].- 1979.- no. 4.- pp. 6-14. (In Russian).
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7. Milenin A. I. Vliyaniye letnikh osadkov na radial'nyy prirost duba chereshchatogo v sukhoy snyt'vo-osokovoy dubrave Shipova lesa [Influence of summer precipitation on the radial increment of pedunculate oak in dry snitovosedge oak Shipov forest]. «Lesotekhnicheskiy zhurnal». ["Forestry engineering journal"]. 2011. no. 4-pp. 72-75. (In Russian).
8. Milenin A. I. Vliyaniye temperatury vozdukha na radial'nyy prirost duba cheresh-chatogo v Shipovom lesu [Influence of air temperature on the radial increment of pedunculate oak in Finger-the woods] «Lesotekhnicheskiy zhurnal». ["Forestry engineering journal"]. 2012. no. 2-pp. 65-69. (In Russian).
9. Matveev S.M. Climatic Changes in the East-European Forest-Steppe and Effects on Scots Pine Productivity / S.M. Matveev, Yu.G. Chendev, A.R. Lupo, J.A. Hubbart, D.A. Timashchuk // Pure and Applied Geophysics. - 2016. DOIhttps://doi.org/10.1007/s00024-016-1420-y.
10. Matskovsky V. Dendroclimatology and historical climatology of Voronezh region, European Russia, since 1790s / V. Matskovsky, E. Dolgova, N. Lomakin, S. Matveev // Int. J. Climatol. - 2016. DOI:https://doi.org/10.1002/joc.4896.
11. Rozas V. Detecting the impact of climate and disturbances jn tree-rings of fagus sylvatika L. and quercus robur L. in a lowland Forest in Cantadria, Northern Spain. Annals of Forest Science. 2001. V. 58. № 3. P. 237-251.
