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
通讯作者	Liu, XH (通讯作者)
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.
关键词	CARBON-ISOTOPE DISCRIMINATION WATER-USE EFFICIENCY NORTH-CENTRAL CHINA ATMOSPHERIC CO2 ARID AREAS DROUGHT DIOXIDE PHOTOSYNTHESIS RECONSTRUCTION CONDUCTANCE
英文关键词	Tree-ring delta C-13; intrinsic water-use efficiency; drought history; Picea crassifolia; Qilian Mountains
语种	英语
WOS研究方向	Physical Geography
WOS类目	Geography, Physical
WOS记录号	WOS:000422284600001
来源期刊	SCIENCES IN COLD AND ARID REGIONS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257928
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]. 中国科学院青藏高原研究所,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).