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DOI	10.1029/2021JD035006
	Hydroclimate Correlations Between the Alxa Desert and Adjacent Mountains in Northwestern China: Evidence From Meteorological and Tree-Ring Data
	Peng, Xiaomei; Yang, Bao; Xiao, Shengchun; Liu, Jingjing; Li, Gang
通讯作者	Yang, B (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou, Peoples R China. ; Yang, B (通讯作者)，Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China. ; Yang, B (通讯作者)，Acad Plateau Sci & Sustainabil, Qinghai Res Ctr Qilian Mt Natl Pk, Xining, Peoples R China.
发表日期	2021
ISSN	2169-897X
EISSN	2169-8996
卷号	126 期号:21
英文摘要	It is important to understand the hydroclimate history of water-deficient regions, such as the Alxa desert of northwest China. However, there are few high-resolution proxy records for the hydroclimate changes over the past centuries in the Alxa desert. Fortunately, there are many tree-ring hydroclimate reconstructions from the nearby mountains. However, the hydroclimate correlations between the Alxa desert and adjacent mountains are unclear. Here, we collected high-quality data from 43 meteorological stations in northwest China (1960-2017). We found increasing mean temperatures in the study area, both on seasonal and annual timescales. We also found that while relative humidity had mostly decreased in the Mt. Qilian and Alxa desert, precipitation and the standardized precipitation evapotranspiration index (SPEI) increased mostly. In the Mt. Helan and Hasi ranges, relative humidity, precipitation, and SPEI all showed decreasing trends. Empirical orthogonal function analysis indicated that precipitation, relative humidity, and SPEI in the Mt. Qilian were similar to the corresponding conditions in the central and western Alxa desert. Hydroclimate conditions in the Mt. Helan and Hasi ranges were correlated with data from the eastern desert. Tree-ring records of precipitation and SPEI from the mountains were used to validate the hydroclimate correlations during the instrumental period. We found strong similarities between hydroclimatic changes in the Mt. Qilian and those in the central and western Alxa desert, on both annual and decadal timescales, from 1877 to 2006. Tree-ring width chronologies from mountainous areas were shown to faithfully represent the hydroclimatic history of the desert area.
关键词	QILIAN MOUNTAINS DROUGHT RECONSTRUCTION TEMPERATURE-VARIATIONS ANNUAL PRECIPITATION POPULUS-EUPHRATICA LOWER REACHES EVAPOTRANSPIRATION ASSOCIATION VARIABILITY CHRONOLOGY
英文关键词	precipitation; relative humidity; standardized precipitation evapotranspiration index (SPEI); evapotranspiration; temperature
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000716774200029
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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/254178
作者单位	[Peng, Xiaomei; Yang, Bao; Liu, Jingjing; Li, Gang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou, Peoples R China; [Yang, Bao] Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China; [Yang, Bao] Acad Plateau Sci & Sustainabil, Qinghai Res Ctr Qilian Mt Natl Pk, Xining, Peoples R China; [Yang, Bao] Qinghai Normal Univ, Xining, Peoples R China; [Xiao, Shengchun] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Lanzhou, Peoples R China; [Li, Gang] Dongdashan Nat Reserve Management Stn Ganzhou Dis, Zhangye, Peoples R China
推荐引用方式 GB/T 7714	Peng, Xiaomei,Yang, Bao,Xiao, Shengchun,et al. Hydroclimate Correlations Between the Alxa Desert and Adjacent Mountains in Northwestern China: Evidence From Meteorological and Tree-Ring Data[J]. 中国科学院西北生态环境资源研究院,2021,126(21).
APA	Peng, Xiaomei,Yang, Bao,Xiao, Shengchun,Liu, Jingjing,&Li, Gang.(2021).Hydroclimate Correlations Between the Alxa Desert and Adjacent Mountains in Northwestern China: Evidence From Meteorological and Tree-Ring Data.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,126(21).
MLA	Peng, Xiaomei,et al."Hydroclimate Correlations Between the Alxa Desert and Adjacent Mountains in Northwestern China: Evidence From Meteorological and Tree-Ring Data".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126.21(2021).