Chemical Composition of Aerosol and Fresh Snow and Tourism Influences at Baishui Glacier No.1 from Mt. Yulong,Southeastern Tibetan Plateau  

作　　者：张宁宁 何元庆 Wilfred H Theakstone 庞洪喜 

机构地区：[1]State Key Laboratory of Cryospheric Sciences,Yulong Snow Mountain Glacial and Environmental Observation Station,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences [2]Graduate University of Chinese Academy of Sciences [3]Institute of Environment and Climate Change Research in Western China,Lanzhou University [4]School of Environment and Development,University of Manchester [5]Key Laboratory for Coast and Island Development of Ministry of Education,School of Geographic and Oceanographic Sciences of Nanjing University [6]State Key Laboratory of Cryospheric Sciences,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences

出　　处：《Journal of Earth Science》2010年第2期199-209,共11页地球科学学刊（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos.40801028,40971019);the National Basic Research Program of China (No.2007CB411501);the West Light Foundation of Chinese Academy of Sciences (No.O828A11001);the Funds from the State Key Laboratory of Cryospheric Sciences and the Lijiang City Government

摘　　要：Aerosol and snow samples were collected at ablation zone of Baishui （白水） Glacier No. 1, Mt. Yulong （玉龙）, from May to June, 2006. The concentrations of Cl^-, NO3^-, SO4^2-, Na^＋, K^＋, Mg^2＋, and Ca^2＋ were determined by ion chromatograph both in aerosol and snow samples. The average total aerosol loading is 25.45 neq.scm^-1, NO3^- and Na^＋ are the dominant soluble ions in the aerosol, accounting for 39% and 21% of average total aerosol loading, respectively. Monsoon circulation reduces the concentration of most ions, indicating that wet scavenging is effective for aerosol particles. In snow samples, SO4^2- and Ca^2＋ are the dominant anion and cation, respectively. A lower Na^＋/Cl^- ratio was found in fresh snow samples compared to the higher ratio that was found in aerosol samples. Analyzing the difference in SO4^2- and NO3^- in air and fresh snow indicated that the aerosol was influenced by local circulation, but the components in fresh snow samples were from long-distance transport. Enrichment of NO3^- in aerosol samples is attributed to motor exhaust emissions from tourism by calculating the SO4^2-/NO3^- ratio in aerosol and fresh snow samples. The temporal variation and correlation coefficients between soluble species in aerosol samples suggest that Cl^-, Na^＋ and K^＋ come from sea-salt aerosol, and SO4^2-, Mg^2＋ and Ca^2＋ are from continental crust sources.Aerosol and snow samples were collected at ablation zone of Baishui （白水） Glacier No. 1, Mt. Yulong （玉龙）, from May to June, 2006. The concentrations of Cl^-, NO3^-, SO4^2-, Na^＋, K^＋, Mg^2＋, and Ca^2＋ were determined by ion chromatograph both in aerosol and snow samples. The average total aerosol loading is 25.45 neq.scm^-1, NO3^- and Na^＋ are the dominant soluble ions in the aerosol, accounting for 39% and 21% of average total aerosol loading, respectively. Monsoon circulation reduces the concentration of most ions, indicating that wet scavenging is effective for aerosol particles. In snow samples, SO4^2- and Ca^2＋ are the dominant anion and cation, respectively. A lower Na^＋/Cl^- ratio was found in fresh snow samples compared to the higher ratio that was found in aerosol samples. Analyzing the difference in SO4^2- and NO3^- in air and fresh snow indicated that the aerosol was influenced by local circulation, but the components in fresh snow samples were from long-distance transport. Enrichment of NO3^- in aerosol samples is attributed to motor exhaust emissions from tourism by calculating the SO4^2-/NO3^- ratio in aerosol and fresh snow samples. The temporal variation and correlation coefficients between soluble species in aerosol samples suggest that Cl^-, Na^＋ and K^＋ come from sea-salt aerosol, and SO4^2-, Mg^2＋ and Ca^2＋ are from continental crust sources.

关 键 词：AEROSOL fresh snow GLACIER Mt. Yulong tourism. 

分 类 号：P343.6[天文地球—水文科学]