Characterization of mercury concentration from soils to needle and tree rings of Schrenk spruce (Picea schrenkiana) of the middle Tianshan Mountains, northwestern China

doi:10.1016/j.ecolind.2019.04.066

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（2010~）

	Characterization of mercury concentration from soils to needle and tree rings of Schrenk spruce (Picea schrenkiana) of the middle Tianshan Mountains, northwestern China
	Kang, Huhu 1,2; Liu, Xiaohong 2,5,6; Guo, Junming 2; Wang, Bo 2; Xu, Guobao 2; Wu, Guoju 2; Kang, Shichang 2,4; Huang, Jie 3
刊名	ECOLOGICAL INDICATORS
	2019-09-01
卷号	104 页码:24-31
关键词	Tree rings Point-pollution source Soil Needles and tree bark Mercury pollution
ISSN号	1470-160X
DOI	10.1016/j.ecolind.2019.04.066
通讯作者	Liu, Xiaohong(xhliu@snnu.edu.cn)
英文摘要	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.
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDA20040501] ; National Natural Science Foundation of China[41571196] ; National Natural Science Foundation of China[41721091] ; open foundation of the State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment[CASSKLLQG1817] ; Fundamental Research Funds for the Central Universities[GK201801007]
WOS关键词	CHLORALKALI PLANT GRENOBLE ; ATMOSPHERIC MERCURY ; SCOTS PINE ; HEAVY-METALS ; ICE CORE ; DEPOSITION ; HG ; EMISSIONS ; POLLUTION ; BARK
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000470966000003
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; open foundation of the State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/13846]
专题	地球环境研究所_黄土与第四纪地质国家重点实验室（2010~）
通讯作者	Liu, Xiaohong
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China 3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China 4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 6.Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Kang, Huhu,Liu, Xiaohong,Guo, Junming,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,2019,104:24-31.
APA	Kang, Huhu.,Liu, Xiaohong.,Guo, Junming.,Wang, Bo.,Xu, Guobao.,...&Huang, Jie.(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,104,24-31.
MLA	Kang, Huhu,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(2019):24-31.