IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Application and verification of simultaneous determination of cellulose C-13 and O-18 in Picea shrenkiana tree rings from northwestern China using the high-temperature pyrolysis method
XU Guobao1; LIU Xiaohong1,2; SUN Weizhen1; CHEN Tuo1; ZHANG Xuanwen1; ZENG Xiaomin2,3; WU Guoju1; WANG Wenzhi4; QIN Dahe1
2018
Source PublicationJOURNAL OF ARID LAND
ISSN1674-6767
EISSN2194-7783
Volume10Issue:6Pages:864-876
SubtypeArticle
Contribution Rank4
AbstractStable isotopes in tree-ring cellulose provide important data in ecological, archaeological, and paleoenvironmental researches, thereby, the demand for stable isotope analyses is increasing rapidly. Simultaneous measurement of cellulose C-13 and O-18 values from tree rings would reduce the cost of isotopic commodities and improve the analytical efficiency compared with conventional separate measurement. In this study, we compared the C-13 and O-18 values of tree-ring -cellulose from Tianshan spruce (Picea schrenkiana) in an arid site in the drainage basin of the Urumqi River in Xinjiang of northwestern China based on separate and simultaneous measurements, using the combustion method (at 1050 degrees C) and the high-temperature pyrolysis method (at 1350 degrees C and 1400 degrees C). We verified the results of simultaneous measurement using the outputs from separate measurement and found that both methods (separate and simultaneous) produced similar C-13 values. The two-point calibrated method improved the results (range and variation) of C-13 and O-18 values. The mean values, standard deviations, and trends of the tree-ring C-13 obtained by the combustion method were similar to those by the pyrolysis method followed by two-point calibration. The simultaneously measured O-18 from the pyrolysis method at 1400 degrees C had a nearly constant offset with that the pyrolysis method at 1350 degrees C due to isotopic-dependence on the reaction temperature. However, they showed similar variations in the time series. The climate responses inferred from simultaneously and separately measured C-13 and O-18 did not differ between the two methods. The tree-ring C-13 and O-18 values were negatively correlated with standardized precipitation evapotranspiration index from May to August. In addition, the O-18 was significantly correlated with temperature (positive), precipitation (negative), and relative humidity (negative) from May to August. The tree-ring C-13 and O-18 values determined simultaneously through the high-temperature pyrolysis method could produce acceptable and reliable stable isotope series. The simultaneous isotopic measurement can greatly reduce the cost and time requirement compared with the separate isotopic measurement. These results are consistent with the previous studies at humid sites, suggesting that the simultaneous determination of C-13 and O-18 in tree-ring -cellulose can be used in wide regions.
Keywordtree rings stable carbon and oxygen isotopes combustion pyrolysis simultaneous determination calibration Picea schrenkiana
DOI10.1007/s40333-018-0070-6
Indexed BySCI
Language英语
Quartile4区
TOP
WOS IDWOS:000450507500004
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/24453
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorXU Guobao
Affiliation1.State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
2.School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China;
3.Department of Geology and Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20742, USA;
4.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
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GB/T 7714
XU Guobao,LIU Xiaohong,SUN Weizhen,et al. Application and verification of simultaneous determination of cellulose C-13 and O-18 in Picea shrenkiana tree rings from northwestern China using the high-temperature pyrolysis method[J]. JOURNAL OF ARID LAND,2018,10(6):864-876.
APA XU Guobao.,LIU Xiaohong.,SUN Weizhen.,CHEN Tuo.,ZHANG Xuanwen.,...&QIN Dahe.(2018).Application and verification of simultaneous determination of cellulose C-13 and O-18 in Picea shrenkiana tree rings from northwestern China using the high-temperature pyrolysis method.JOURNAL OF ARID LAND,10(6),864-876.
MLA XU Guobao,et al."Application and verification of simultaneous determination of cellulose C-13 and O-18 in Picea shrenkiana tree rings from northwestern China using the high-temperature pyrolysis method".JOURNAL OF ARID LAND 10.6(2018):864-876.
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