干旱区生态环境知识资源中心(Arid): Application and verification of simultaneous determination of cellulose delta~(13)C and delta~(18)O in Picea shrenkiana tree rings from northwestern China using the high-temperature pyrolysis method

Arid

	Application and verification of simultaneous determination of cellulose delta~(13)C and delta~(18)O in Picea shrenkiana tree rings from northwestern China using the high-temperature pyrolysis method
	Xu Guobao; Liu Xiaohong; Sun Weizhen; Chen Tuo; Zhang Xuanwen; Zeng Xiaomin; Wu Guoju; Wang Wenzhi; Qin Dahe
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2018
卷号	10 期号:6 页码:864-876
英文摘要	Stable 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 delta~(13)C and delta~(18)O 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 delta~(13)C and delta~(18)O values of tree-ring alpha-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°C) and the high-temperature pyrolysis method (at 1350°C and 1400°C). We verified the results of simultaneous measurement using the outputs from separate measurement and found that both methods (separate and simultaneous) produced similar delta~(13)C values. The two-point calibrated method improved the results (range and variation) of delta~(13)C and delta~(18)O values. The mean values, standard deviations, and trends of the tree-ring delta~(13)C obtained by the combustion method were similar to those by the pyrolysis method followed by two-point calibration. The simultaneously measured delta~(18)O from the pyrolysis method at 1400°C had a nearly constant offset with that the pyrolysis method at 1350°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 delta~(13)C and delta~(18)O did not differ between the two methods. The tree-ring delta~(13)C and delta~(18)O values were negatively correlated with standardized precipitation evapotranspiration index from May to August. In addition, the delta~(18)O was significantly correlated with temperature (positive), precipitation (negative), and relative humidity (negative) from May to August. The tree-ring delta~(13)C and delta~(18)O 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 delta~(13)C and delta~(18)O in tree-ring alpha-cellulose can be used in wide regions.
英文关键词	tree rings stable carbon and oxygen isotopes combustion pyrolysis simultaneous determination calibration Picea schrenkiana
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Forestry
CSCD记录号	CSCD:6384004
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336039
作者单位	Xu Guobao, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, State Key Laboratory of Cryospheric Science, Lanzhou, Gansu 730000, China.; Sun Weizhen, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, State Key Laboratory of Cryospheric Science, Lanzhou, Gansu 730000, China.; Chen Tuo, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, State Key Laboratory of Cryospheric Science, Lanzhou, Gansu 730000, China.; Zhang Xuanwen, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, State Key Laboratory of Cryospheric Science, Lanzhou, Gansu 730000, China.; Wu Guoju, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, State Key Laboratory of Cryospheric Science, Lanzhou, Gansu 730000, China.; Qin Dahe, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, State Key Laboratory of Cryospheric Science, Lanzhou, Gansu 730000, China...
推荐引用方式 GB/T 7714	Xu Guobao,Liu Xiaohong,Sun Weizhen,et al. Application and verification of simultaneous determination of cellulose delta~(13)C and delta~(18)O in Picea shrenkiana tree rings from northwestern China using the high-temperature pyrolysis method[J],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 delta~(13)C and delta~(18)O 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 delta~(13)C and delta~(18)O in Picea shrenkiana tree rings from northwestern China using the high-temperature pyrolysis method".Journal of Arid Land 10.6(2018):864-876.