Moss facilitating mercury, lead and cadmium enhanced accumulation in organic soils over glacial erratic at Mt. Gongga, China
文献类型：期刊论文
| 作者 | Wang, Xun3,4; Yuan, Wei3; Feng, Xinbin3; Wang, Dingyong4; Luo, Ji1,2
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| 刊名 | IOP Conference Series: Earth and Environmental Science
 |
| 出版日期 | 2019-11-01 |
| 卷号 | 254页码:UNSP 112974 |
| 关键词 | Glacier retreat Heavy metal accumulation Moss uptake Mercury isotopes |
| ISSN号 | 1755-1307 |
| DOI | 10.1016/j.envpol.2019.112974 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | Moss is usually as an initial colonizer in alpine glacier retreated regions. We hypothesized that moss can significantly facilitate the toxic metals accumulation in alpine ecosystems based on its strong ability of absorption and the role in soil development. Hence, we investigated the trace element pool sizes and enrichment factors, especially for mercury (Hg) by using the Hg isotopic compositions to determine the source contributions in a moss-dominated ecosystem over glacial erratic in Eastern Tibetan Plateau. Results show that Hg, lead (Pb) and cadmium (Cd) are highly enriched in organic soils. Specifically, Cd concentration is 5-20 times higher than the safety limit of the acid soil (pH <= 5.5) in China. Atmospheric depositions dominantly contribute to the Pb and Cd sources in organic soils, and followed by the moraine particles influences. The lowering pH in organic soils increasing with glacial retreated time results in the desorption of Cd in organic soils. Atmospheric Hg-0 uptake by moss predominantly contributes to the Hg sources in organic soils. The average Pb accumulation rate over last 125-year is about 5.6 +/- 1.0 mg m(-2) yr(-1), and for Cd is 0.4 +/- 0.1 mg m(-2) yr(-1), and for Hg-0 is 27.6 +/- 3.2 mu g m(-2) yr(-1). These elevated accumulation rates are caused by the high moss biomass and elevated atmospheric Hg, Pb and Cd pollution levels in China and neighbouring regions. Our study indicates that the moss not only as the bioindicator, but also plays an important role in the hazardous metal biogeochemical cycling in alpine regions. (C) 2019 Elsevier Ltd. All rights reserved. |
| WOS关键词 | STABLE-ISOTOPE FRACTIONATION ; GASEOUS ELEMENTAL MERCURY ; FOREST FLOOR IMPLICATIONS ; ATMOSPHERIC MERCURY ; HEAVY-METALS ; PRIMARY SUCCESSION ; SUBPOLAR GLACIERS ; TIBETAN PLATEAU ; TRACE-ELEMENTS ; HIGH-MOUNTAIN |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000488887500082 |
| 出版者 | IOP Publishing |
| 源URL | [http://ir.imde.ac.cn/handle/131551/33989]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 通讯作者 | Feng, Xinbin |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China; 2.Minist Water Conservancy & Power, Chengdu 610041, Sichuan, Peoples R China 3.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China; 4.Southwest Univ, Coll Resources & Environm, Chongqing 400715, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wang, Xun,Yuan, Wei,Feng, Xinbin,et al. Moss facilitating mercury, lead and cadmium enhanced accumulation in organic soils over glacial erratic at Mt. Gongga, China[J]. IOP Conference Series: Earth and Environmental Science,2019,254:UNSP 112974. |
| APA | Wang, Xun,Yuan, Wei,Feng, Xinbin,Wang, Dingyong,&Luo, Ji.(2019).Moss facilitating mercury, lead and cadmium enhanced accumulation in organic soils over glacial erratic at Mt. Gongga, China.IOP Conference Series: Earth and Environmental Science,254,UNSP 112974. |
| MLA | Wang, Xun,et al."Moss facilitating mercury, lead and cadmium enhanced accumulation in organic soils over glacial erratic at Mt. Gongga, China".IOP Conference Series: Earth and Environmental Science 254(2019):UNSP 112974. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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