| Moss facilitating mercury, lead and cadmium enhanced accumulation in organic soils over glacial erratic at Mt. Gongga, China | |
Wang, Xun1,2; Yuan, Wei2; Feng, Xinbin2; Wang, Dingyong1; Luo, Ji3,4
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| Corresponding Author | Feng, Xinbin(fengxinbin@vip.skleg.cn) |
| 2019-11-01 | |
| Source Publication | ENVIRONMENTAL POLLUTION
 |
| ISSN | 0269-7491 |
| Volume | 254Pages:112974 |
| Subtype | Article |
| Contribution Rank | 3 |
| Abstract | 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. |
| Keyword | Glacier retreat Heavy metal accumulation Moss uptake Mercury isotopes |
| DOI | 10.1016/j.envpol.2019.112974 |
| Indexed By | SCI |
| WOS Keyword | STABLE-ISOTOPE FRACTIONATION ; GASEOUS ELEMENTAL MERCURY ; FOREST FLOOR IMPLICATIONS ; ATMOSPHERIC MERCURY ; HEAVY-METALS ; PRIMARY SUCCESSION ; SUBPOLAR GLACIERS ; TIBETAN PLATEAU ; TRACE-ELEMENTS ; HIGH-MOUNTAIN |
| Language | 英语 |
| WOS Research Area | Environmental Sciences & Ecology |
| WOS Subject | Environmental Sciences |
| WOS ID | WOS:000488887500082 |
| Funding Organization | Natural Science Foundation of China ; Strategic Priority Research Programs of the Chinese Academy of Sciences |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/31343 |
| Collection | 山地表生过程与生态调控重点实验室 |
| Corresponding Author | Feng, Xinbin |
| Affiliation | 1.Southwest Univ, Coll Resources & Environm, Chongqing 400715, Peoples R China; 2.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China; 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China; 4.Minist Water Conservancy & Power, Chengdu 610041, Sichuan, Peoples R China |
| First Author Affilication | 中国科学院水利部成都山地灾害与环境研究所 |
| Corresponding Author Affilication | 中国科学院水利部成都山地灾害与环境研究所 |
| Recommended Citation 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]. ENVIRONMENTAL POLLUTION,2019,254:112974. |
| 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.ENVIRONMENTAL POLLUTION,254,112974. |
| MLA | Wang, Xun,et al."Moss facilitating mercury, lead and cadmium enhanced accumulation in organic soils over glacial erratic at Mt. Gongga, China".ENVIRONMENTAL POLLUTION 254(2019):112974. |
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