Past atmospheric trace metal deposition in a remote lake (Lake Ngoring) at the headwater areas of Yellow River, Tibetan Plateau
文献类型：期刊论文
| 作者 | Wen, Shengfang
|
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2014 |
| 卷号 | 72期号:2页码:399-406 |
| 关键词 | Tibetan plateau Yellow river Trace metals Atmospheric deposition Remote lake |
| ISSN号 | 1866-6280 |
| 中文摘要 | A complete record derived from a core dated both by Pb-210 and Cs-137 chronologies from Lake Ngoring at the headwater areas of the Yellow River provides new insight into the changing atmospheric deposition of trace metals including Cd, Cr, Cu, Ni, Pb, and Zn. This study showed that there was an inflection in the early 1960s, before which both fluxes and contents of Cd, Ni, Pb, and Zn remained relatively steady or slowly increased, and thereafter continued increases both in fluxes and contents were found. Taking Pb as an example, the flux increased from 0.13 (before 1960) to 0.25 mg m(-2) a(-1) (averaged 1963-2006). According to atmospheric flux calculations using Al as a reference element, atmospheric fluxes of trace metals generally showed a rapid increase and peaked in recent years, closely following the historical economic development of the neighboring region, mainly for Qinghai and Gansu provinces. The atmospheric inventory for Zn was the highest, reaching 1.068 g m(-2), while the lowest was for Cd, at only 0.079 gm(-2). The percentage proportions of atmospheric deposition for Cd, Ni, and Zn were 37, 12, and 8.7 %, respectively. Hence, the atmospheric contribution to the trace metal content via long range transport is not negligible when considering input of materials to lake ecosystems. |
| WOS记录号 | WOS:000338324700008 |
| 公开日期 | 2015-03-26 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9579]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Wen, Shengfang. Past atmospheric trace metal deposition in a remote lake (Lake Ngoring) at the headwater areas of Yellow River, Tibetan Plateau[J]. ENVIRONMENTAL EARTH SCIENCES,2014,72(2):399-406. |
| APA | Wen, Shengfang.(2014).Past atmospheric trace metal deposition in a remote lake (Lake Ngoring) at the headwater areas of Yellow River, Tibetan Plateau.ENVIRONMENTAL EARTH SCIENCES,72(2),399-406. |
| MLA | Wen, Shengfang."Past atmospheric trace metal deposition in a remote lake (Lake Ngoring) at the headwater areas of Yellow River, Tibetan Plateau".ENVIRONMENTAL EARTH SCIENCES 72.2(2014):399-406. |
入库方式： OAI收割
来源：生态环境研究中心
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