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Oxygen stable isotopes of a network of shrubs and trees as high-resolution plaeoclimatic proxies in Northwestern China
Li, Qiang1,2,3,4; Liu, Yu1,2,3,4,5; Nakatsuka, Takeshi6; Zhang, Qi-Bin7; Ohnishi, Keiko8; Sakai, Akiko6; Kobayashi, Osamu9; Pan, Yingnan10; Song, Huiming1,2,3,4; Liu, Ruoshi5; Sun, Changfeng1,2,3,4; Fang, Congxi1,2,3,4
Corresponding AuthorLi, Qiang(liqiang@ieecas.cn) ; Liu, Yu(liuyu@loess.llqg.ac.cn)
2020-05-15
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
Volume285Pages:13
AbstractTree rings play an important role in high-resolution paleoclimate reconstruction over large areas. Nevertheless, the sampling sites of most existing tree-ring networks are unevenly distributed due to the limitations of the availability of appropriate tree species and sampling conditions. In light of the good spatial representation provided by tree-ring stable oxygen isotope ratio (delta O-18), we selected several shrubs (Hippophae rhamnoides L.) found in near-glacier valleys, conifer (Picea crassifolia Komarov) trees in alpine meadows, and broad-leaved (Populus euphratica Olivier) trees found in deserts. Although the three sampling sites were each 250-360 km apart, with varied site conditions and very distinct species, we observed coherent variations in the delta O-18 of the three species within a common time interval. The average correlation coefficient was found to be 0.674 (p < 0.001, n = 30) among annual-ring delta O-18 series of three species. All annual-ring d18O of three species demonstrated significant negative correlations with relative humidity (RH) and precipitation, and significant positive correlations with temperature, in spring and summer. The correlation coefficient between the first principal component (PC1) of the delta O-18 variations in the three species and the regional summer (June to August) RH was found to be -0.855 (p < 0.001, n = 30). In addition, PC1 showed variations similar to those of delta O-18 in precipitation. Spatial correlation demonstrated that PC1 represents the hydroclimatic variability that occurs in most of central-western China. Significant correlations with sea-level pressure and several East Asian Summer Monsoon indices indicated that PC1 was affected by the large-scale atmospheric circulation pattern and could be used as an indicator of monsoon moisture. PC1 correlated significantly with ten annually resolved hydroclimatic series in central-western China, demonstrating the potential of establishing a tree-ring climate network with uniform spatial distribution using multi-species tree-ring delta O-18. The results from these series suggest that an abrupt climate change occurred in 1979. After 1979, PC1 correlated significantly with the summer-season EI Nino Modoki index (r = 0.474, p < 0.02, n = 24). This implied that the effect of the central Pacific ENSO on the variability in monsoon moisture in China became more prominent after the abrupt climate change in 1979.
DOI10.1016/j.agrformet.2020.107929
WOS KeywordRING CELLULOSE DELTA-O-18 ; RELATIVE-HUMIDITY ; PRECIPITATION ; RATIOS ; VARIABILITY ; RECONSTRUCTION ; GROUNDWATER ; DELTA-C-13 ; STRENGTH ; DESERT
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41873021] ; National Natural Science Foundation of China[U1803245] ; National Natural Science Foundation of China[41991251] ; Youth Innovation Promotion Association of CAS[2017451] ; West Light Foundation of CAS, Young Star of Science and Technology, Shaanxi Province ; STEP program[2019QZKK0101] ; Cultivating Foundation of SKLLQG
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
Funding OrganizationNational Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS ; West Light Foundation of CAS, Young Star of Science and Technology, Shaanxi Province ; STEP program ; Cultivating Foundation of SKLLQG
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000525819500012
PublisherELSEVIER
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/12594
Collection现代环境研究室
第四纪科学与全球变化卓越创新中心
Corresponding AuthorLi, Qiang; Liu, Yu
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
3.Beijing Normal Univ, IRCESF, Beijing 100875, Peoples R China
4.Beijing Normal Univ, JCGCS, Beijing 100875, Peoples R China
5.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China
6.Nagoya Univ, Grad Sch Environm Studies, Nagoya, Aichi 4648601, Japan
7.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
8.Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido 0600819, Japan
9.Ehime Univ, Inst Int Relat, Matsuyama, Ehime 7908577, Japan
10.Xidian Univ, Sch Humanities & Arts, Xian 710071, Peoples R China
Recommended Citation
GB/T 7714
Li, Qiang,Liu, Yu,Nakatsuka, Takeshi,et al. Oxygen stable isotopes of a network of shrubs and trees as high-resolution plaeoclimatic proxies in Northwestern China[J]. AGRICULTURAL AND FOREST METEOROLOGY,2020,285:13.
APA Li, Qiang.,Liu, Yu.,Nakatsuka, Takeshi.,Zhang, Qi-Bin.,Ohnishi, Keiko.,...&Fang, Congxi.(2020).Oxygen stable isotopes of a network of shrubs and trees as high-resolution plaeoclimatic proxies in Northwestern China.AGRICULTURAL AND FOREST METEOROLOGY,285,13.
MLA Li, Qiang,et al."Oxygen stable isotopes of a network of shrubs and trees as high-resolution plaeoclimatic proxies in Northwestern China".AGRICULTURAL AND FOREST METEOROLOGY 285(2020):13.
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