天山托木尔峰青冰滩72号冰川径流水化学特征得研究.pdfVIP

Abstract Glacier area located in the alpine zone, is affected limitedly by direct human activities, and the content of various chemical substances in water represents the background value of the hydrological and chemical effected without human activities in nature, the chemical composition and evolution process of which directly reflecting the hydrogeological characteristics in the basin and flowing through the region. The Tianshan Tomur Peak region is the largest glacier area in number and scale. However, so far, the domestic study about hydrochemistry in the region is still very limited. So carrying out the discuss of hydro-chemical action on the Tomur Peak glacial meltwater is very significant, not only helping us understand water quality changes in mountain river under the future climate conditions, can also paving for the research of interaction between the atmospheric environment and mountain ecological environment. Based on 31 streamwater samples collected at the Glacier No.72 of Qingbingtan from 1st to 31st August 2008, and snow pit data and rock samples in the study region, the study discusses the hydrochemical characteristics and the ion source. The main conclusions are as follows. (1) The anions and cations in streamwater of glacier No. 72 are dominated by - 2+ 2+ + 2+ + + HCO3 and Ca . The order of cations are: Ca ＞Na ＞Mg ＞K ＞NH4 . The order - 2- - - of anions are: HCO3 ＞SO4 ＞Cl ＞NO3 . The order of major ion concentrations was: - 2- 2+ - + - 2+ + + HCO3 SO4 C