%0 Journal Article
%T Hydrochemical Characteristics and Evolution of Runoff at Qiyi Glacier, Qilian Mts.<br>祁连山七一冰川融水化学组成及演化特征
%A WU Xiao-bo
%A LI Quan-lian
%A SONG Gao-ju
%A HE Jian-qiao
%A JIANG Xi
%A <br>武小波
%A 李全莲
%A 宋高举
%A 贺建桥
%A 蒋熹
%J 环境科学
%D 2008
%I 
%X Glacier ice, supraglacier stream water, ice-marginal stream water, proglacier stream water samples were collected at Qiyi glacier located in central part of Qilian Mountain 2006-06 - 2006-07. Major ions concentration, pH and EC were analyzed. The results indicate that pH varies from 8.05 to 8.79, and EC 32.4 - 134.4 microS cm(-1). The order of major ions concentration in differed water is: supraglacier stream water< ice-marginal stream water < proglacier stream water. Meanwhile, hydrochemical characteristics vary from HCO3(-) -Ca(2+) to (HCO3(-) + SO4(2-))-(Ca(2+) + Mg(2+)). Major ions,almost in all samples; HCO3(-) > SO4(2-) > Cl(-) > NO3(-), Ca(2+) > Mg(2+) > Na(+) > K(+) mainly comes from carbonate weathering,and some is from sulfate dissolution. Concentrations of Mg(2+) and K(+) increase quicker than Na(+) and Ca(2+) in proglacier stream and ice-margin stream that is inverse to their abundance in crust. The spatial characteristic of ions concentration is controlled by the process of water-rock and temporal change is hydrological factors.
%K hydrochemistry
%K melt-water
%K Qiyi glacier
%K Qilian Mts<br>水化学
%K 冰川融水
%K 七一冰川
%K 祁连山
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=AFBD71E0E9D9213942ABFB724D138236&yid=67289AFF6305E306&vid=771469D9D58C34FF&iid=38B194292C032A66&sid=9E7C0CB25117E09B&eid=54E527C5B72E59D8&journal_id=0250-3301&journal_name=环境科学&referenced_num=5&reference_num=25