中文摘要：

中间的喜马拉雅山脉的 16.8 m 永久积雪核心在 2006 年 8 月在 Dasuopu 冰河的关口上被恢复，是上面的 7000 m 海水平。317 件样品的一个总数为稳定的氧同位素比率(三角洲 O-18 ) 和主要离子集中(Na+ ， NH4+ ， K+ ， Mg2+ ， Ca2+ ， Cl- ， SO42- ，和 NO3-) 被测量。标明日期的永久积雪核心并且季节的划分沿着稳定的氧同位素和外壳的种类基于显著季节的变化被执行(Ca2+ ， Mg2+) 侧面。多参数和 Dasuopu 永久积雪核心的高分辨率的 glaciochemical 数据集合在高举起的区域记录了降水的详细化学特征，中间的喜马拉雅山脉自从 1991 A.D，它主要从外壳、人为的来源发源，当海盐贡献是次要的时。主要离子集中的季节的可变性被流行空气团，大气的发行量状况和降水政体的季节的引申统治。线性回归分析显示大多数在年度离子的流动的变化能被线性依赖在雪累积率上解释。

英文摘要：

A 16.8 m firn core of middle Himalayas was recovered on the col of Dasuopu glacier in August 2006, being 7000 m above sea level. A total of 317 samples were measured for stable oxygen isotope ratios （6180） and major ion concentrations （Na＋, NH＋, K＋, Mg2＋, Ca2＋, Cl-, SO4^2-, and NO3^-. The firn core dating and seasonal partitioning were carried out based on the marked seasonal variations along the stable oxygen isotopes and crustal species （Ca2＋, Mg2＋） profiles. The multi-parameters and high-resolution glaciochemical data set of Dasuopu firn core recorded the detailed chemical characteristics of pre cipitation in high-elevation region, middle Himalayas, since 1991 A.D., which mainly originated from the crustal and anthropogenic sources, while the sea-salt contribution was minor. The seasonal variability of major ion concentrations was dominated by the seasonal alternation of the prevalent air mass, atmospheric circulation situation and precipitation regime. Linear regression analysis indicated that most of the variance in annual ionic fluxes can be explained by a linear dependence on snow accumulation rate.