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Carbon, oxygen and hydrogen stable isotopes in tree rings are sensitive indicators of climate changes. We have measured carbon, oxygen and hydrogen isotope ratios in ?-cellulose extracted from annual rings of pine (Pinus sylvestris L.) and oak (Quercus robur L.) growing in the Niepołomice Forest, Southern Poland. The presented isotope records cover the period 1900-2003. In this paper we compare the values of δ13C, δ18O and δ2H observed in the wholewood of pine and in the latewood of oak with meteorological data (temperature, precipitation and sunshine). The highest significant values of correlation coefficients calculated between δ13C and the meteorological data are: -0.26 for temperature, 0.25 for precipitation and 0.41 for sunshine. On the basis of our investigations we deduced that pine is a more sensitive indicator of environmental changes than oak. Our investigation proves that the best indicators are: hydrogen for summer temperature and oxygen for summer precipitation. We noticed a rapid decrease of pine δ13C values in 1966 from -22.46‰ to -24.64‰.
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67--76
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Bibliogr. 34 poz., rys., tab.
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autor
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autor
autor
autor
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autor
- Department of Radioisotopes, Institute of Physics, Silesian University of Technology, Krzywoustego 2, 44-100 Gliwice, Poland, malgorzata.szczepanek@polsl.pl
Bibliografia
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- Epstein S., Yapp C.J. and Hall J.H., 1976: The determination of the D/H ratios of non-exchangeable hydrogen in cellulose extracted from aquatic and land plants. Earth and Planetary Sciences Letters 30: 241-251.
- Epstein S. and Yapp C.J., 1976: Climatic implications of the D/H ratio of hydrogen in C-H groups in tree cellulose. Earth and Planetary Science Letters 30: 252-261.
- Feng X. and Epstein S., 1995: Carbon isotopes of trees from arid environments and implications for reconstructing atmospheric CO2 concentrations. Geochimica et Cosmochimica Acta 59: 2599-2608.
- Freyer H.D. and Belacy N., 1983: 13C/12C records in Northern Hemispheric trees during the past 500 years- anthropogenic impact and climate superpositions. Journal of Geophysical Research 88: 6844-6852.
- Gray J. and Song S.J., 1984: Climatic implications of the natural variations of D/H ratios in tree ring cellulose. Earth and Planetary Sciences Letters 70: 129-138.
- Gray J. and Thompson P., 1976: Climatic information from 18O/16O ratios of cellulose in tree rings. Nature 262: 481-482.
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- Krąpiec M., 1998: Oak dendrochronology of the neoholocene in Poland, Folia Quaternaria 69: 5-133.
- Leavitt S.W. and Long A., 1982: Evidence for 13C/12C fractionation between tree leaves and wood. Nature 298: 742-743.
- Leavitt S.W. and Long A., 1984: Sampling strategy for stable carbon isotope analysis of tree rings in pine. Nature 311: 145-147.
- Leavitt S.W. and Long A., 1989: Intertree variability of d13C in tree rings. In: Rundel P.W., Ehleringer J.R. and Nagy K.A., eds, Stable isotopes in ecological research. Springer Verlag, New York: 95–104.
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- Loader N. J., Robertson I., Barker A.C., Switsur V.R. and Waterhouse J.S., 1997: An improved technique for the batch processing of small whole wood samples to α-cellulose. Chemical Geology 136: 313-317.
- Long A., 1982: Stable isotopes in tree rings. In: Hughes M.K., Kelly P.M., Pilcher J.R. and LaMarche Jr.V.C., eds, Climate from Tree Rings. Cambridge University Press, Cambridge: 13-18.
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- Pazdur A., Korput S., Fogtman M., Szczepanek M., Hałas S., Krąpiec M. and Szychowska-Krąpiec E., 2005: Carbon-13 in α-cellulose of oak late wood (Jêdrzejów, Southern Po land) during the Maunder Minimum. Geological Quarterly 49(2): 165–172.
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- Switsur V.R., Waterhouse J.S., Field E.M.F., Carter A.H.C., Hall M., Pollard M., Robertson I., Pilcher J.R. and Heaton T.H.E., 1994: Stable isotope studies of oak from the English Fenland and Northern Ireland. In: Funnell B.M., Kay R.L.F., eds, Palaeoclimate of the Last Glacial/Interglacial Cycle. Special publication No. 94/2 of the Earth Sciences Directorate, Natural Environment Research Council, Swindon: 67–73.
- Switsur V.R., Waterhouse J.S., Field E.M., Carter A.H.C. and Loader N.J., 1995: Stable isotope studies in tree rings from oak - techniques and some preliminary results. Palaoklimaforschung 15: 129–140.
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- Szychowska-Krąpiec E. and Krąpiec M., 2002: Kondycja drzewostanów sosnowych w Ojcowskim Parku Narodowym w świetle analizy dendroekologicznej (Health of pine forests from the Ojców National Park in the light of dendrochronological studies) Chrońmy Przyrodę Ojczystą 58(5): 5–22 (in Polish).
- Tans P.P. and Mook W.G., 1980: Past atmospheric CO2 levels and 13C/12C ratios in tree rings. Tellus 32: 268-283.
- Wilczyński S., 1999: Dendroklimatologia sosny zwyczajnej (Pine) z wybranych stanowisk w Polsce. Rozprawa doktorska (Dendroclimatology of Scots pine (Pine) from selected sites in Poland. PhD Thesis). AR Kraków. WEB site: <http://nauka-polska.pl/raporty/opisy/synaba/76000/sn76369.htm>. 85 pp. (in Polish).
- Yapp C.J. and Epstein S., 1982: Climatic significance of the hydrogen isotope ratios in tree cellulose. Nature 297: 636-639.
- Zielski A., 1997: Uwarunkowania oerodowiskowe przyrostów radialnych sosny zwyczajnej (Pinus sylvestris L.) w Polsce północnej na podstawie wielowiekowej chronologii Rozprawa habilitacyjna. (Environmental conditions of radial growth of Pinus sylvestris from North Poland on the basis of long time chronology. Dissertation). UMK Toruń. WEB site: <http://bazy.opi.org.pl/raporty/opisy/synaba/73000/sn73431.htm> 127 pp. (in Polish).
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Bibliografia
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bwmeta1.element.baztech-article-BAT3-0040-0019