科研成果
  当前位置:首页 > 科研成果 > 论文
Carbonaceous matter deposition in the high glacial regions of the Tibetan Plateau
作者: Li, C. L., P. F. Chen, S. C. Kang, F. P. Yan, X. F. Li, B. Qu and M. Sillanpaa
期刊名称: Atmospheric Environment
发表年度: 2016
卷: 141
期:
联系作者:
页码: 203-208
摘要: Carbonaceous matter at glacial region plays important role in river ecosystems fed by glacier and albedo reduction of glacier surface. However, currently, limited knowledge are available on the carbonaceous matter within the glacial region of the Tibetan Plateau (TP). In this study, the data from six snowpits in the glacial region across the TP were reported. The results showed that dissolved organic carbon (DOC) concentrations of snowpit samples of the TP were comparable to those of European Alps and the Arctic. The ratio of DOC to carbonaceous matter (40.25 +/- 8.98%) was lower than that of Alpine glaciers, thus indicating greater particulate carbon content in the TP glacial region. In addition, the DOC was significantly correlated with insoluble particulate carbon (IPC), indicating that IPC and DOC likely came from the same sources. Spatially, the DOC concentration decreased from the north (0.42 +/- 0.29 mg-C L-1) to the south TP (0.15 +/- 0.06 mg-C L-1), which was consistent with variations in the distribution of dust storm on the TP. Principal component analysis of major ions and DOC showed that mineral dust contributed the major part of DOC, followed by biogenic sources such as agriculture and livestock. Finally, based on DOC concentrations and precipitation amounts at different periods, the mean annul flux of DOC in the glacial region of the TP was calculated to be 0.11 +/- 0.05 g-C m(-2) yr(-1). (C) 2016 Elsevier Ltd. All rights reserved.

版权所有:中国科学院青藏高原研究所 Copyright © 2003-
通讯地址:北京市朝阳区林萃路16号院3号楼 邮政编码:100101
京ICP备05002818-1号 京公网安备110402500031号