气候变化领域集成服务门户(CCPortal): Spatiotemporal variability in tree ring's delta C-13 of Picea crassifolia in the Qilian Mountains: climatic significance and responses to rising CO2

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DOI	10.3724/SP.J.1226.2011.00093
	Spatiotemporal variability in tree ring's delta C-13 of Picea crassifolia in the Qilian Mountains: climatic significance and responses to rising CO2
	Liu, XiaoHong; An, WenLing; Liang, ErYuan; Wang, WenZhi; Shao, XueMei; Huang, Lei; Qin, DaHe
发表日期	2011
ISSN	1674-3822
起始页码	93
结束页码	102
卷号	3 期号:2
英文摘要	The carbon isotopic composition (delta C-13) of tree rings was used to assess changes in intrinsic water-use efficiency (Wi) to increasing atmospheric CO2 and climate change during the period of 1891-2003. Five Qinghai spruce (Picea crassifolia) stands were selected in the Qilian Mountains, growing along a precipitation gradient. All five delta C-13 were correlated to each other, but two sites (DDS and CLS), which are far from the main body of the mountains, show relative weak connections to other sites. Although trees at all sites had improved their Wi in response to increasing atmospheric CO2 concentration, spruce growing in the regions far away from the main body of the mountains were less sensitive to improved Wi than those of other sites. Based on the correlation between carbon isotope discrimination (Delta) and Palmer Drought Severity Index (PDSI), the drought history covering the period of 1891-2003 was reconstructed in the study region. The two most severe drought epochs of the late 1920s and the last decade were caused by reduced precipitation and climate warming, respectively. Our results will be useful in assessing any further spatial climate-related bioclimatic information.
英文关键词	Tree-ring delta C-13; intrinsic water-use efficiency; drought history; Picea crassifolia; Qilian Mountains
WOS研究方向	Physical Geography
WOS类目	Geography, Physical
来源期刊	SCIENCES IN COLD AND ARID REGIONS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158651
作者单位	Liu, XH (corresponding author), Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, 320 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China.
推荐引用方式 GB/T 7714	Liu, XiaoHong,An, WenLing,Liang, ErYuan,et al. Spatiotemporal variability in tree ring's delta C-13 of Picea crassifolia in the Qilian Mountains: climatic significance and responses to rising CO2[J],2011,3(2).
APA	Liu, XiaoHong.,An, WenLing.,Liang, ErYuan.,Wang, WenZhi.,Shao, XueMei.,...&Qin, DaHe.(2011).Spatiotemporal variability in tree ring's delta C-13 of Picea crassifolia in the Qilian Mountains: climatic significance and responses to rising CO2.SCIENCES IN COLD AND ARID REGIONS,3(2).
MLA	Liu, XiaoHong,et al."Spatiotemporal variability in tree ring's delta C-13 of Picea crassifolia in the Qilian Mountains: climatic significance and responses to rising CO2".SCIENCES IN COLD AND ARID REGIONS 3.2(2011).