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[目的]明确博斯腾湖流域不同水体氢氧同位素特征差异。[方法]测定2014年博斯腾湖流域不同水体的氢氧同位素值,并与前人各期数据进行时空上的对比。[结果]湖水δ~(18)O均值为-0.36‰,δD为-15.98‰,存在δD=2.99δ~(18)O-14.91的数量关系;河水δ~(18)O均值为-9.23‰,δD为-61.81‰,其关系:δD=6.10δ~(18)O-5.43;地下水δ~(18)O均值为-8.11‰,δD为-57.01‰,其关系:δD=4.61δ~(18)O-19.68。经与Craig(1961)全球大气降水线(GMWL)及根据全球降水同位素观测网GNIP数据与乌鲁木齐大气降水线方程(LMWL)对比,地下水、湖水与河水氢氧同位素组成均大致落在当地大气降水线和全球大气降水线附近,显示受降水补给为主。与2001、2008、2011年数据对比显示,各年间各水体(地下水、地表水)氢氧同位素数据存在一定差异,该差异或由各期采样点空间分布不同引起。[结论]研究结果为博斯腾湖流域的可持续发展提供了理论依据。
[Objective] The research aimed to clarify the differences of hydrogen and oxygen isotopes in different waters of the Bosten Lake. [Method] The hydrogen and oxygen isotope values of different waters in the basin of the Bosten Lake in 2014 were determined and compared with previous data of different periods. [Results] The mean value of δ 18 O in the lake water was -0.36 ‰, the δD was -15.98 ‰, and there was a quantitative relationship between δD = 2.99 δ 18 O-14.91. The average value of δ 18 O in the river water was -9.23 ‰ , the δD is -61.81 ‰, the relationship is: δD = 6.10δ ~ (18) O-5.43; the average value of δ 18 O in groundwater is -8.11 ‰ and δD is -57.01 ‰, the relationship is δD = 4.61 δ ~ 18) O-19.68. Comparing with the Craig (1961) Global Atmospheric Precipitation Line (GMWL) and the GNIP data and the Urumqi Atmospheric Rainfall Equation (LMWL), the composition of hydrogen and oxygen isotopes of groundwater, lake water and river water generally fall into the local atmospheric precipitation line And near the global precipitation line, mainly by precipitation recharge. Comparisons with data from 2001, 2008 and 2011 show that there is a certain difference between the data of hydrogen and oxygen isotopes in different water bodies (groundwater and surface water) in each year, which may be caused by the different spatial distribution of sampling points in each period. [Conclusion] The results provided the theoretical basis for the sustainable development of the Bosten Lake Basin.