气候变化领域集成服务门户(CCPortal): Tree-ring-based reconstruction of temperature variability (1445-2011) for the upper reaches of the Heihe River Basin, Northwest China

CCPortal

DOI	10.1007/s40333-015-0138-5
	Tree-ring-based reconstruction of temperature variability (1445-2011) for the upper reaches of the Heihe River Basin, Northwest China
	Wang Yamin; Feng Qi; Kang Xingcheng
发表日期	2016
ISSN	1674-6767
EISSN	2194-7783
卷号	8 期号:1
英文摘要	Long-term temperature variability has significant effects on runoff into the upper reaches of inland rivers. This paper developed a tree-ring chronology of Qilian juniper (Sabina przewalskii Kom.) from the upper tree-line of the middle Qilian Mountains within the upper reaches of Heihe River Basin, Northwest China for a long-term reconstruction of temperature at the study site. In this paper, tree-ring chronology was used to examine climate-growth associations considering local climate data obtained from Qilian Meteorological Station. The results showed that temperatures correlated extremely well with standardized growth indices of trees (r=0.564, P < 0.001). Tree-ring chronology was highest correlated with annual mean temperature (r=0.641, P < 0.0001). Annual mean temperature which spans the period of 1445-2011 was reconstructed and explained 57.8% of the inter-annual to decadal temperature variance at the regional scale for the period 1961-2011. Spatial correlation patterns revealed that reconstructed temperature data and gridded temperature data had a significant correlation on a regional scale, indicating that the reconstruction represents climatic variations for an extended area surrounding the sampling sites. Analysis of the temperature reconstruction indicated that major cold periods occurred during the periods of 1450s-1480s, 1590s-1770s, 1810s-1890s, 1920s-1940s, and 1960s-1970s. Warm intervals occurred during 1490s-1580s, 1780s-1800s, 1900s-1910s, 1950s, and 1980s to present. The coldest 100-year and decadal periods occurred from 1490s-1580s and 1780s-1800s, respectively, while the warmest 100 years within the studied time period was the 20(th) century. Colder events and intervals coincided with wet or moist conditions in and near the study region. The reconstructed temperature agreed well with other temperature series reconstructed across the surrounding areas, demonstrating that this reconstructed temperature could be used to evaluate regional climate change. Compared to the tree-ring reconstructed temperature from nearby regions and records of glacier fluctuations from the surrounding high mountains, this reconstruction was reliable, and could aid in the evaluation of regional climate variability. Spectral analyses suggested that the reconstructed annual mean temperature variation may be related to large-scale atmospheric-oceanic variability such as the solar activity, Pacific Decadal Oscillation (PDO) and El Nio-Southern Oscillation (ENSO).
关键词	tree-ring climatic response temperature reconstruction upper reaches of Heihe River Basin
学科领域	Environmental Sciences & Ecology
语种	英语
WOS研究方向	Environmental Sciences
来源期刊	JOURNAL OF ARID LAND
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111885
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Alxa Desert Ecohydrol Expt Res Stn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang Yamin,Feng Qi,Kang Xingcheng. Tree-ring-based reconstruction of temperature variability (1445-2011) for the upper reaches of the Heihe River Basin, Northwest China[J]. 中国科学院西北生态环境资源研究院,2016,8(1).
APA	Wang Yamin,Feng Qi,&Kang Xingcheng.(2016).Tree-ring-based reconstruction of temperature variability (1445-2011) for the upper reaches of the Heihe River Basin, Northwest China.JOURNAL OF ARID LAND,8(1).
MLA	Wang Yamin,et al."Tree-ring-based reconstruction of temperature variability (1445-2011) for the upper reaches of the Heihe River Basin, Northwest China".JOURNAL OF ARID LAND 8.1(2016).