Identification of anthropogenic contributions to heavy metals in wetland soils of the Karuola Glacier in the Qinghai-Tibetan Plateau
Identification of anthropogenic contributions to heavy metals in wetland soils of the Karuola Glacier in the Qinghai-Tibetan Plateau
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青藏高原卡若拉冰川湿地土壤重金属人为贡献识别
DOI：
10.1016/j.ecolind.2018.11.052
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发表时间：
2019-03
影响因子：
6.9
通讯作者：
Jiang Ming
中科院分区：
文献类型：
--
作者：
Zhang Zhongsheng;Zheng Dongmei;Xue Zhenshan;Wu Haitao;Jiang Ming
破译自然和人为来源对金属浓度的分配对于更好地了解人类活动对偏远高寒湿地金属元素分布的影响至关重要。平均铁（Fe）、铝（Al）和钪（Sc）浓度与其背景值相近，而锰（Mn）浓度低于背景值。铜（Cu）、镉（Cd）、铅（Pb）、锌（Zn）和铬（Cr）的浓度远高于背景值。Cd是主要污染物，超过87.7%的Cd是人为污染。Al、Pb、Sc呈显著正相关，Cr、Mn与Fe呈显著负相关。Fe、Pb、Cu、Cd和Zn之间无显著相关性。通过因子分析提取三个成分。Al、Fe、Sc、Cr和Mn主要与母质有关，土壤中的Pb既有内源来源，也有外源来源，Cd、Zn和Cu大部分或大部分来自人为来源。土壤中Pb、Cu、Cd和Zn的内源含量分别为59.85% ~ 81%、69.3%、12.3%和58.1%。在过去200 年中，金属积累通量一直在增加。铅同位素特征表明，大部分人为铅来源于铅锌矿冶炼和煤炭消耗。
Deciphering apportionments of natural and anthropogenic sources to metal concentrations are essential for better understanding impacts of human activities on metal element distribution in remote alpine wetlands. In the present work, we investigated heavy metal distribution patterns and identified the substantial contributions from anthropogenic sources on heavy metal concentrations in wetland soils of the Karuola Glacier in Tibet using a geochemical model and lead isotopes. Mean iron (Fe), aluminum (Al), and scandium (Sc) concentrations were similar to their background values and manganese (Mn) was lower than that. Concentrations of copper (Cu), cadmium (Cd), lead (Pb), zinc (Zn), and chromium (Cr) were much higher than their background values. Cd was the main contaminant because more than 87.7% of Cd was anthropogenic. Al, Pb, and Sc showed significant positive correlations between each other, Cr and Mn concentrations were significantly and negatively correlated with Fe concentrations. No significant correlations were observed among Fe, Pb, Cu, Cd, and Zn. Three components were extracted by factor analysis. Al, Fe, Sc, Cr, and Mn were related primarily to the parent material, Pb in soils was from both endogenous and exogenous sources, and Cd, Zn, and Cu were considerably or mostly from anthropogenic sources. Endogenous sources represented about 59.85%–81%, 69.3%, 12.3%, and 58.1% for total Pb, Cu, Cd, and Zn in soils. Metal accumulation fluxes have been increasing over the past 200 years. Lead isotopic features showed that most anthropogenic Pb was attributed to Pb-Zn ore smelting and coal consumption.
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影响因子：
3.3
作者：
Jiaxi Zhou;Zhilong Huang;Zhi-Cheng Lv;Xiangkun Zhu;JianGuo Gao;H. Mirnejad
通讯作者：
Jiaxi Zhou;Zhilong Huang;Zhi-Cheng Lv;Xiangkun Zhu;JianGuo Gao;H. Mirnejad
DOI：
--
发表时间：
2012
期刊：
Applied Mechanics and Materials
影响因子：
--
作者：
Wang Ke-qin
通讯作者：
Wang Ke-qin
影响因子：
2.9
作者：
E. Steinnes;T. E. Sjøbakk;Carmen Donisa;M. Brännvall
通讯作者：
E. Steinnes;T. E. Sjøbakk;Carmen Donisa;M. Brännvall
影响因子：
9.8
作者：
Zhang, Hua;Wang, Zhaofeng;Li, Lanhui
通讯作者：
Li, Lanhui
DOI：
--
发表时间：
2015
期刊：
--
影响因子：
--
作者：
LI Quan-lia
通讯作者：
LI Quan-lia