[Stable isotopes characteristics of precipitation over Shaanxi-Gansu-Ningxia and its water vapor sources.] / é™•ç”˜å®åœ°åŒºé™æ°´ç¨³å®šåŒä½ç´ ç‰¹å¾åŠæ°´æ±½æ¥æº.

Based on hydrogen and oxygen stable isotopes in precipitation and meteorological data over Shaanxi-Gansu-Ningxia provided by the Global Network of Isotopes in Precipitation (GNIP) and in previous literature, the spatial and temporal variations of oxygen stable isotopes in precipitation and their driving factors were analyzed, the local meteoric water line (LMWL) functions were established. The results showed that the slope and intercept of the LMWL changed in the order of Gansu