Burnik Šturm Martina, Ganbaatar Oyunsaikhan, Voigt Christian C, Kaczensky Petra
a Research Institute of Wildlife Ecology , University of Veterinary Medicine Vienna , Vienna , Austria.
b Great Gobi B Strictly Protected Area Administration , Takhin Tal, Gobi Altai Province , Mongolia.
Isotopes Environ Health Stud. 2017 May;53(2):157-171. doi: 10.1080/10256016.2016.1231184. Epub 2016 Oct 12.
For certain remote areas like Mongolia, field-based precipitation, surface and ground water isotopic data are scarce. So far no such data exist for the Mongolian Gobi desert, which hinders the understanding of isotopic fractionation processes in this extreme, arid region. We collected 26 event-based precipitation samples, 39 Bij river samples, and 75 samples from other water bodies in the Dzungarian Gobi in SW Mongolia over a period of 16 months for hydrogen and oxygen stable isotope analysis. δH and δO values in precipitation show high seasonal variation and cover an extreme range: 175 ‰ for δH and 24 ‰ for δO values. The calculated local meteoric water line (LMWL) shows the isotopic characteristics of precipitation in an arid region. Individual water samples fall into one of three groups: within, above or below the 95 % confidence interval of LMWL. Data presented provide a basis for future studies in this region.
对于像蒙古这样的某些偏远地区，基于实地的降水、地表水和地下水同位素数据稀缺。到目前为止，蒙古戈壁沙漠尚无此类数据，这妨碍了对这个极端干旱地区同位素分馏过程的理解。在16个月的时间里，我们在蒙古西南部准噶尔戈壁采集了26个基于事件的降水样本、39个毕河样本以及75个来自其他水体的样本，用于氢和氧稳定同位素分析。降水中的δH和δO值呈现出较高的季节变化，且覆盖范围极广：δH值为175‰，δO值为24‰。计算得出的当地大气降水线（LMWL）显示了干旱地区降水的同位素特征。各个水样分为三组之一：在LMWL的95%置信区间之内、之上或之下。所呈现的数据为该地区未来的研究提供了基础。
