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Individual and pooled tree-ring stable-carbon isotope series in Chinese pine from the Nan Wutai region, China: Common signal and climate relationships
Liu, Y (Liu, Yu)[1,2]; Wang, RY (Wang, Ruiyuan)[1,3]; Leavitt, SW (Leavitt, Steven W.)[4]; Song, HM (Song, Huiming)[1,3]; Linderholm, HW (Linderholm, Hans W.)[5]; Li, Q (Li, Qiang)[1]; An, ZS (An, Zhisheng)[1]
2012-11-10
Source PublicationChemical Geology
Volume330-331Pages:17-26
Subtype期刊论文
Abstract

To investigate the differences in the climatic signals in stable-carbon isotopic composition captured by averaging series from individual trees versus raw wood of trees pooled prior to analysis, we analyzed two groups of Chinese pine (Pinus tabulaeformis Carr.) from the Nan Wutai region of the Qinling Mountains, China. One group included three trees that were analyzed separately, and the other group comprised four other trees that were pooled prior to preparation and analysis. All δ13C series were positively correlated (r = 0.50–0.58, p < 0.0001) for the period AD 1901–2003. After removing the effects of changing δ13C of atmospheric CO2, correlations between the meteorological data and all individual and pooled discrimination (∆13C) series revealed significant negative responses to temperature for several specific months and for mean January to September (TJ–S) temperature. We used a “numerical mix method” (NMM, equivalent to unweighted mean), by averaging individual ∆13C series (NPS1+NPS2+NPS3), to generate a new series that more strongly correlated to climate series TJ–S (r = − 0.67, p < 0.0001). This time interval from January through September (J–S) includes the growing season and months prior to the growing season, but the temperature prior to the growing season may provide energy necessary for timely initiation of growth. Thus, the mean TJ–S is significant for plant growth and is consistent with the tree physiology in this region. Our results suggest that the numerical mix method with tree-ring stable isotope data from three trees provides a series quite satisfactory for climatic reconstruction. The relationship of the numerical mix model ∆13C with temperature was stronger than for the pooled series, suggesting numerical mixing of series can be more effective than raw wood sample pooling at least according to the trees in this study.

KeywordPinus Tabulaeformis Pooling Cellulose Stable-carbon Isotope Climate Response Nan Wutai China
DOI10.1016/j.chemgeo.2012.08.008
Indexed BySCI ; EI
Language英语
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10104
Collection现代环境研究室
Corresponding AuthorLiu, Y (Liu, Yu)[1,2]
Affiliation1.The State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China;
2.Department of Environmental Science and Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
3.The University of the Chinese Academy of Sciences, Beijing, 100049, China;
4.Laboratory of Tree-Ring Research, University of Arizona, Tucson, AZ 85721, USA;
5.Regional Climate Group, Department of Earth Sciences, University of Gothenburg, 40530 Gothenburg, Sweden
Recommended Citation
GB/T 7714
Liu, Y ,Wang, RY ,Leavitt, SW ,et al. Individual and pooled tree-ring stable-carbon isotope series in Chinese pine from the Nan Wutai region, China: Common signal and climate relationships[J]. Chemical Geology,2012,330-331:17-26.
APA Liu, Y .,Wang, RY .,Leavitt, SW .,Song, HM .,Linderholm, HW .,...&An, ZS .(2012).Individual and pooled tree-ring stable-carbon isotope series in Chinese pine from the Nan Wutai region, China: Common signal and climate relationships.Chemical Geology,330-331,17-26.
MLA Liu, Y ,et al."Individual and pooled tree-ring stable-carbon isotope series in Chinese pine from the Nan Wutai region, China: Common signal and climate relationships".Chemical Geology 330-331(2012):17-26.
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