中文摘要：

这篇论文论述在 7 月 1 日冰河收集的雪包装和夏天降水的稳定的同位素数据，在西北中国和分析的 Qilian 山他们与气象学的因素的关系。在事件规模上，在夏天降水的 delta~18O 价值上没有温度效果，而数量效果被显示清楚。由跟踪潮湿运输历史并且把 降水与它的同位素的作文作比较，这数量完成，这被显示出不仅在潮湿轨道反映变化，它与季风活动有关，而且是也在云与蒸汽的冷却的度联系了，在掉落的落下和大气的蒸汽之间的掉落的雨点和同位素的交换的蒸发。当很小降水都不发生在冬季，雪包装侧面主要在另外的三个季节代表降水。在春天和秋天在夏天和高比率有低降水 delta~18O 比率。为夏天降水的大气的水线(MLW ) 是 deltaD = 7.6 delta~18O + 13.3，它类似于在 Delingha，在 Qilian 山的南方边界定位了。为雪包装的 MWL 是 deltaD = 10.4 delta~18O + 41.4，显示出一个大斜坡并且拦截。雪包装的重氢过量(d) 断然与 delta~18O 被相关，显示 d 和 delta~18O 从春天减少到夏天并且从早秋天增加到早春。这然后导致高度 MWL 倾斜并且拦截。在雪包装的 d 的季节的变化显示潮湿来源和轨道的变化。在春天和秋天期间，潮湿从大陆人在象黑色一样的相对温暖的水身体上再循环或快速的蒸发发源，里海并且咸海海当干燥西的空气群众忽略他们时，在降水的因此很高的 d 价值被形成。在夏天期间，季风为低 d 价值负责。这显示季风能到达 Qilian 山的西方的部分。

英文摘要：

This paper presents the stable isotope data of the snow pack and summer precipitation collected at the July 1 Glacier, Qilian Mountains in northwest China and analyses their relationships with meteorological factors. On an event scale, there is no temperature effect on the 8180 values in the summer precipitsUon, whereas the amount effect is shown to be clear. By tracing the moisture transport history and comparing the precipitation with its isotopic composition, it is shown that this amount effect not only reflects the change in moisture trajectory, which is related to the monsoon activities, but is also associated with the cooling degree of vapor in the cloud, the evaporation of falling raindrops and the isotopic exchange between the falling drops and the atmospheric vapor. As very little precipitation occurs in winter, the snow pack profile mainly represents the precipitation in the other three seasons. There are low precipitation δ^18O ratios in summer and high ratios in spring and autumn. The Meteoric Water Line （MLW） for the summer precipitation is δD = 7.6 8180 ＋ 13.3, which is similar to that at Delingha, located in the south rim of the Qilian Mountains. The MWL for the snow pack is δD = 10.4 δ18O 41.4, showing a large slope and intercept. The deuterium excess （d） of the snow pack is positively correlated with 8180, indicating that both d and 8180 decrease from spring to summer and increase from early autumn to early spring. This then results in the high slope and intercept of the MWL. Sea- sonal fluctuations of d in the snow pack indicate the change of moisture source and trajectory. During spring and autumn, the moisture originates from continental recycling or rapid evaporation over relatively warm water bodies like Black, Caspian and Aral Seas when the dry westerly air masses pass over them, hence very high d values in precipitation are formed. During summer, the monsoon is responsible for the low d values. This indicates that the monsoon can reach the western part of the Qilian Mountains