https://www.selleckchem.com/sc....reening/chemical-lib
Altitude was significantly negatively correlated with river δD, and the δD and δ18O of groundwater. δD and δ18O of groundwater fluctuated significantly in the area with groundwater depth less than 10 m, but were stable in other areas. There was a positive correlation between precipitation δ18O and air temperature. The d-excess in wet season was higher than that in dry season, with a decreasing distribution characteristic from southern to northern part in the study area. More than 50% river in upper stream came from precipitati
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