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Characterization of mercury concentration from soils to needle and tree rings of Schrenk spruce (Picea schrenkiana) of the middle Tianshan Mountains, northwestern China
Kang, HH (Kang, Huhu)1,4; Liu, XH (Liu, Xiaohong)1,2,3; Guo, JM (Guo, Junming)1; Wang, B (Wang, Bo)1; Xu, GB (Xu, Guobao)1; Wu, GJ (Wu, Guoju)1; Kang, SC (Kang, Shichang)1,5; Huang, J (Huang, Jie)6
Source PublicationECOLOGICAL INDICATORS
2019
Volume104Issue:0Pages:24-31
DOI10.1016/j.ecolind.2019.04.066
Abstract

Mercury (Hg) is a potent neurotoxin in low concentrations and can be transported over a long distance in the atmosphere. Due to Hg accumulation, plant tissues could be used as a low-cost and efficient biological indicator. A significant linear relationship was found between Hg value and organic carbon content in soil, and the highest Hg concentration reached up to the level of 267.1 ng/g in the topsoil layer near the coal-fired power plant. There were evident distance-dependent variations of Hg concentration in needles close to the cement factory. There was a significant Hg accumulation in the needles from all sites, and the highest Hg concentrations were observed in needle samples from the site nearest to the cement factory (HXG1). Hg in tree rings increased by year gradually for all sites, with the highest concentrations of Hg recorded in the site closest to the cement factory. The tree bark of the HXG1 site recorded the highest Hg concentration (65.8 ng/g), reflecting the total Hg deposition from the atmosphere and cement dust associated-Hg loading over the region. Due to the limited data, however, we cannot confirm the possible translocation of Hg from tree bark to outmost tree rings at this time. Overall, we concluded that in our study area, most of the accumulated Hg emissions originated from the cement factory. Even at low Hg concentrations, Hg in tree-rings, needles and barks could not only be used as bioindicators for Hg pollution but also infer the pollution history over long-term periods and to enhance our understandings of the biogeochemical Hg cycling in the forest ecosystems.

Subject AreaEnvironmental Sciences
WOS IDWOS:000470966000003
Language英语
Indexed BySCI
KeywordChloralkali Plant Grenoble Atmospheric Mercury Scots Pine Heavy-metals Ice Core Deposition Hg Emissions Pollution Bark
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS SubjectBiodiversity Conservation ; Environmental Sciences
Cooperation Status国际
ISSN1470-160X
Department环境变化与地表过程重点实验室
URL查看原文
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9185
Collection图书馆
Corresponding AuthorLiu, XH (Liu, Xiaohong)
Affiliation1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China;
2.Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Shaanxi, Peoples R China;
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China;
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
5.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100049, Peoples R China;
6.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
Kang, HH ,Liu, XH ,Guo, JM ,et al. Characterization of mercury concentration from soils to needle and tree rings of Schrenk spruce (Picea schrenkiana) of the middle Tianshan Mountains, northwestern China[J]. ECOLOGICAL INDICATORS,2019,104(0):24-31.
APA Kang, HH .,Liu, XH .,Guo, JM .,Wang, B .,Xu, GB .,...&Huang, J .(2019).Characterization of mercury concentration from soils to needle and tree rings of Schrenk spruce (Picea schrenkiana) of the middle Tianshan Mountains, northwestern China.ECOLOGICAL INDICATORS,104(0),24-31.
MLA Kang, HH ,et al."Characterization of mercury concentration from soils to needle and tree rings of Schrenk spruce (Picea schrenkiana) of the middle Tianshan Mountains, northwestern China".ECOLOGICAL INDICATORS 104.0(2019):24-31.
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