Carbon isotope composition of plants along altitudinal gradient and its relationship to environmental factors on the Qinghai-Tibet Plateau

• Autorzy: Li M , Liu H. , Li L. , Yi X. , Zhu X.
• Języki publikacji: EN

Abstrakty

EN

Distribution pattern of δ¹³C values of plateau plants and their responses to environment along altitudinal gradients were investigated. In the growing season of 2003 (June– August), stable carbon isotope ratios (δ¹³C) of 174 plant samples belonging to 89 species of 20 families and 58 genera along the gradient 2800– 4400 m (above sea level) was studied in six sites on the east edge of Qinghai-Tibet Plateau. The results indicated that the range of δ¹³C values of plants is narrow from –30.2‰ to –25.2‰, which means that none of the species examined belonged to C₄ photosynthetic pathway and all of these species performed C₃ photosynthetic pathway. The average δ¹³C values of plants at 6 sites were positively correlated to altitude (r = 0.974, P <0.01). The results revealed that site-averaged δ¹³C values were negatively correlated with temperature (r = 0.907, P <0.05) as well as CO₂ partial pressure (r = 0.940, P <0.01). The combination of these two factors account for 80% of the variation of δ¹³C values (r² = 0.859, P <0.01). Varying precipitation with increasing altitude does not affect the plant δ¹³C values (r = 0.469, P> 0.05) as well as the sunlight duration(r = 0.630, P> 0.05).

Słowa kluczowe

EN

environmental factor; plateau plant; global change; Qinghai-Tibet Plateau; carbon isotope composition; plant ecology; plant

• Wydawca: -
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2007
• Tom: 55
• Numer: 1
• Opis fizyczny: p.67-78,fig.,ref.

Twórcy

autor

Li M

• Chinese Academy of Sciences, 18 Shuangqing Road, Haidian District, Beijing, 100085, P.R.China

autor

Liu H.

autor

Li L.

autor

Yi X.

autor

Zhu X.

Bibliografia

• Bender M.M. 1971 – Variation in the ¹³C/¹²C ratios of plants in relation to the pathway of photosynthetic carbon dioxide fixation – Phytochemistry, 10: 1239–1244.
• Craig H. 1957 – Isotope standards for carbon and oxygen and correlation factors for mass spectrometric analysis of carbon dioxide – Geochim. Cosmochim. Ac. 12: 133–149.
• Damesin C.S., Rambal S., Joffre R. 1997 – Between tree variations in leaf δ¹³C of Quercus different water availability – Ecology, 111: 26–35.
• Edwards T.W.D., Graf W., Trimborn P., Stichler W., Lipp J., Payer H.D. 2000 – δ¹³C response surface resolves humidity and temperature signals in trees – Geochim. Cosmochim. Ac. 64: 161–167.
• Ehleringer J.R., Fied C.B., Lin Z., Kuo C. 1986 – Leaf carbon isotope and mineral composition in subtropical plants along an irradiance cline – Oecologia, 70: 520–526.
• Farquhar G.D., O’Leary M.H., Berry J.A. 1982 – On the relationship between carbon isotope discrimination and the intercellular carbon dioxide concentration in leaves – Aust. J. Plant Physiol. 9: 121–137.
• Farquhar G.D., Wong S.C. 1984 – An empirical model of stomatal conductance – Aust. J. Plant Physiol. 11: 191–210.
• Feng H.Y., An L.Z., Chen T. 2003 – The relationship between foliar stable carbon isotope composition in Pedicularis L. and environment factors – J. Glaciol. Geocryol. 25: 88–93.
• Francey R.J., Farquhar G.D. 1982 – An explanation of ¹³C/¹²C variations in tree rings – Nature, 295: 28–31.
• Gale J. 1973 – Availability of carbon dioxide for photosynthesis at high altitudes: theoretical considerations – Ecology, 53: 494–497.
• Guillemette M., Stephen J.B. 2001 – Carbon isotopes in Ombrogenic peat bog plants as climatic indicators: calibration from and altitudinal transect in Switzerland – Organic Geochemistry, 32: 233–245.
• Hamerlynck E.P., Huxman T.E., McAuliffe J.R., Smith S.D. 2004 – Carbon isotope discrimination and foliar nutrient status of Larrea tridentate(creosote bush) in contrasting Mojave Desert soils – Oecologia, 138: 210–215.
• Hirota M., Tang Y.H., Hu Q.W., Kato T., Mo W.H., Cao G.M., Mariko S. 2004 – Methane emissions from different vegetation zones in a Qinghai-Tibetan Plateau wetland – Soil. Bio. Chem. 36: 737–738.
• Körner C., Farquhar G.D., Roksandic Z. 1988 – A global survey of carbon isotope discrimination in plants from high altitude – Oecologica, 74: 623–632.
• Li X.B., Chen J.F., Zhang P.Z., Liu G.X. 1999 – The Characteristics of carbon isotope composition of modern plants over Qinghai-Tibet Plateau (NE) and its climatic information – Acta Sedimentologica Sin. 17: 325–330.
• Ma J.Y., Chen T., Qiang W.Y., Wang G. 2005 – Correlations between foliar stable carbon isotope composition and environmental factors in desert plant Reaumuria soongorica(Pall.) Maxim – J. Integrat. Plant Bio. 47: 1065–1073.
• McCarroll D., Pawellek F. 2001 – Stable carbon isotope ratios of Pinus sylvestris from northern Finland and the potential for extraction a climate signal from long Fennoscandian chronologies – Holocene, 11: 517–526.
• Morecroft M.D., Woodward F.I., Marrs R.H. 1990 – Experimental investigations on the environmental determination of δ¹³C at different altitudes – J. Exp. Bot. 41: 1303–1308.
• O’Leary M.H. 1988 – Carbon isotopes in photosynthesis – Bioscience, 38: 328–336.
• Polley H.W., Johnson H.B., Mayeux H.S. 1995 – Nitrogen and water repuirements of C₃ plants grown at glacial to present carbon dioxide concentrations – Funct. Ecol. 9: 86–96.
• Rice S.K., Giles L. 1996 – The influence of water content and leaf anatomy on carbon isotope discrimination and photosynthesis in Sphagnum – Plant Cell and Envir. 19: 118–124.
• Robertson I., Rolfe J., Switsur V.R., Carter A.C., Hall M.A., Barker A.C., Waterhouse J.S. 1997 – Signal strength and climate relationships in ¹³C/¹²C ratios of tree ring cellulose from oak in southwest Finland – Geophys. Res. Lett. 24: 1487–1490.
• Smith B.N., Epstein S. 1971 – Two categories of ¹³C/¹²C ratios for higher plants – Plant Physiol. 47: 380–384.
• Stuiver M., Braziunas T.F. 1987 – Tree cellulose ¹³C/¹²C isotope ratios and climate change – Nature, 328: 58–60.