中文摘要：

从高山的冰核心的化学记录提供 paleoclimatic 和环境信息的无价的来源。不仅大气的化学作文而且 depositional 和 post-depositional 过程在雪 / 永久积雪阶层以内被记录。为了解释冰的环境、气候的意义，核心记录，我们由在在东方 Tianshan 山的 Urumqi 冰河号码 1 上从 2003 年 10 月调查同类的积雪场到 2006 年 9 月学习了冰河积雪场化学的可变性，中亚。在干燥、湿的季节的离子的种类的原则部件分析在在积雪场再分配离子揭示了 meltwater 的影响。1 ^st , 2 ^nd 和 3 ^{为旱季的 rd} 原则部件显著地不同，在 depositional 之间的思考复杂协会或 / 并且 post-depositional 过程。离子的集中的可变性趋势在湿季节期间被发现与重要参数适合一个高斯函数。多于离子的一半在湿季节期间外面被沥滤， elution 因素揭示了那。关于离子积雪场活动性的差别被发现。那么学习的离子中， ₄² 是最活动并且 Mg ²⁺ 最少活动。在空气温度和 elution 过程之间的一种阀值关系在学习时期上被调查。结果显示强壮融化 /ablation 过程和画像的再分配发生在 0f 回答者的阀值空气温度(74.4 ?%) 希望通过他们的下一 GFGP，和一半从低收入的农田工作被解放(50.6 ?%) 希望了得到非现金赔偿。接受的心甘情愿 ?(WTA ) 下一 GFGP 的价值出现了？？

英文摘要：

Chemical records from alpine ice cores provide an invaluable source of paleoclimatic and environ- mental information. Not only the atmospheric chemical composition but also depositional and post-depositional processes are recorded within snow/tim strata. To interpret the environmental and climatic significance of ice core records, we studied the variability of glacier snowpack chemistry by investigating homogeneous snowpacks from October 2003 to September 2006 on Urumqi Glacier No. 1 in eastern Tianshan Mountains, Central Asia. Principle Component Analysis of ionic species in dry and wet seasons revealed the impact of meltwater in redistributing ions in the snowpacks. The 1st, 2nd and 3rd principle components for dry seasons differ significantly, reflecting complex associations between depositional or/and post-depositional processes. The variability trend of ionic concentrations during the wet seasons was found to fit a Gauss Function with significant parameters. The elution factor revealed that more than half of ions are leached out during the wet seasons. Differences with respect to ion snowpack mo- bility were found. Of the ions studied SO42- was the most mobile and Mg2＋ the least mobile. A threshold relationship between air temperatures and the elution process was investigated over the study period. The results indicate that the strong melt/ablation processes and iconic redistribution occur at a threshold air temperature of 0℃. The study found that surface melt on the snowpacks is the main factor causing the alteration of the snowpack chemistry. Rainfall also has an impact on the chemistry but plays a less significant role than the surface melt.