IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2018  > Vol15 No.2
Spatial differentiation in stable isotope compositions of surface waters and its environmental significance in the Issyk-Kul Lake region of Central Asia
MA Long; JILILI Abuduwaili; LI Yao-ming
Corresponding AuthorMA Long
2018-02
Source PublicationJournal of Mountain Science
ISSN1672-6316
Volume15Issue:2Pages:254-263
Subtype期刊论文
AbstractStable isotope values of oxygen (18O) and hydrogen (2H) of surface waters were used to study the origin and environmental significances in the Issyk-Kul basin of Kyrgyzstan in Central Asia, which is the most important intermountain basin in the modern Tien Shan orogen. This study is the first analysis of hydrochemical spatial differentiation in the stable isotopes of surface waters in this watershed. 75 samples were collected from rivers, springs, lakes, rain and snow during the rainy season in July and August of 2016. Stable isotopes of 18O and 2H were studied for all samples, and cation ratios (Sr/CaandMg/Ca) were also determined for lake water samples. Stable isotope values from precipitation scattered around the Local Meteoric Water Line (determined from Urumqi Station of the global network of isotopes in precipitation (GNIP)), together with values of the Deuterium excess parameter (d) from 15.3‰ to 30.5‰, with an average of 19.8‰, indicating that the moisture sources are primarily from regions with low relative humidity. The δ18O and δ2H values were significantly different between the river and lake samples, indicating that regional evaporation caused the isotopicenrichment of lake water. Geospatial autocorrelation, measured by Moran's I coefficient, indicated weak spatial autocorrelation within stable isotopes of oxygen and hydrogen in the surface waters of the studied area, which is primarily an effect of climate during the water chemistry evolution. The cation ratios Sr/Ca and Mg/Ca in lake water samples were not correlated with the concentration of total dissolved solids, but did show correlation with stable isotopic values, which is significant for paleoenvironmental reconstruction.
KeywordSpatial Differentiation Stable Isotope Moisture Sources Geospatial Autocorrelation Issyk-kul Lake Central Asia
DOI10.1007/s11629-017-4499-4
Indexed BySCI
Language英语
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20843
CollectionJournal of Mountain Science_Journal of Mountain Science-2018_Vol15 No.2
Recommended Citation
GB/T 7714
MA Long,JILILI Abuduwaili,LI Yao-ming. Spatial differentiation in stable isotope compositions of surface waters and its environmental significance in the Issyk-Kul Lake region of Central Asia[J]. Journal of Mountain Science,2018,15(2):254-263.
APA MA Long,JILILI Abuduwaili,&LI Yao-ming.(2018).Spatial differentiation in stable isotope compositions of surface waters and its environmental significance in the Issyk-Kul Lake region of Central Asia.Journal of Mountain Science,15(2),254-263.
MLA MA Long,et al."Spatial differentiation in stable isotope compositions of surface waters and its environmental significance in the Issyk-Kul Lake region of Central Asia".Journal of Mountain Science 15.2(2018):254-263.
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