Atmospheric Pb variations in Central Asia since 1955 from Muztagata ice core record, eastern Pamirs  

作　　者：LI Zhen YAO Tandong TIAN Lide XU Baiqing LI Yuefang 

机构地区：[1]Key Laboratory of Cryosphere and Environment, Chinese Academy of Sciences, Lanzhou 730000, China [2]Laboratory of Environment and Process on Tibetan Plateau, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China

出　　处：《Chinese Science Bulletin》2006年第16期1996-2000,共5页

基　　金：This work was supported by the National Natural Science Foundation of China （Grant Nos. 40121101, 90102005）;the Chinese Academy of Sciences （Grant No. KZCX3-SW-339）;National Basic Research Program of China （Grant No. 2005CB422004）.

摘　　要：A Muztagata ice core recovered at 7010 m altitude in East Pamirs provides a Pb concentration record from 1955 to 2000. The result reveals in- creasing Pb concentrations from 1955 to 1993, with two Pb concentration peaks in 1980 and 1993. After 1993, Pb concentrations in ice core show an obvi- ously declining trend. Analysis shows that the lead in the Muztagata ice core mainly came from anthropo- genic emissions from countries in Central Asia, while the local emission had little contribution.A Muztagata ice core recovered at 7010 m altitude in East Pamirs provides a Pb concentration record from 1955 to 2000. The result reveals increasing Pb concentrations from 1955 to 1993, with two Pb concentration peaks in 1980 and 1993. After 1993, Pb concentrations in ice core show an obviously declining trend. Analysis shows that the lead in the Muztagata ice core mainly came from anthropogenic emissions from countries in Central Asia, while the local emission had little contribution.

关 键 词：冰核 慕士塔格山 铅 大气 中亚 帕米尔高原 

分 类 号：X132[环境科学与工程—环境科学]