气候变化领域集成服务门户(CCPortal): Typical heavy metals accumulation, transport and allocation in a deglaciated forest chronosequence, Qinghai-Tibet Plateau

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DOI	10.1016/j.jhazmat.2023.132162
	Typical heavy metals accumulation, transport and allocation in a deglaciated forest chronosequence, Qinghai-Tibet Plateau
	Chen, Peijia; Wang, Xun; Yuan, Wei; Wang, Dingyong
发表日期	2023
ISSN	0304-3894
EISSN	1873-3336
卷号	459
英文摘要	Understanding heavy metals (HMs) accumulation and transportation is the foundation to assess the ecological risks caused by the pollution of HMs in terrestrial ecosystems. There are large knowledge gaps regarding impacts of vegetation succession on shaping the HMs accumulation, transportation and allocation in the remote alpine regions. Herein, we comprehensively investigated the distribution and source contribution of mercury (Hg), cadmium (Cd) and chromium (Cr) along with vegetation succession in a deglaciated forest chronosequence of Qinghai-Tibet Plateau. Results showed that Hg and Cd were highly enriched in organic soils, while Cr concen-trations and pool sizes decreased significantly with the vegetation succession. Atmospheric Hg deposition contributed to the dominant Hg sources in topsoil (74 -87%), whereas moraine weathering was the main source of Cr (73 -76%). Both moraine (18 -48%) and atmospheric deposition inputs (52 -82%) affected Cd accu-mulation in topsoil. Over the last century, the accumulation rate of Hg and Cd showed the distinctly decreasing trends due to the vegetation leading to the elevated atmospheric depositions at the earlier deglacial sites. The negative accumulation rate of Cr along with the vegetation succession reflected the formation of organic soil diluting the geogenic inputs of Cr.
关键词	Qinghai-Tibet Plateau Glacial retreat area Vegetation succession Mercury Cadmium Chromium Source analysis
英文关键词	DISSOLVED ORGANIC-MATTER; TRACE-ELEMENTS; CADMIUM ACCUMULATION; ATMOSPHERIC MERCURY; CHROMIUM SPECIATION; ECOSYSTEM SERVICES; HIGH-MOUNTAIN; TREE BARK; SOIL; TRANSLOCATION
WOS研究方向	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:001062060300001
来源期刊	JOURNAL OF HAZARDOUS MATERIALS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282772
作者单位	Southwest University - China; Chinese Academy of Sciences; Guiyang Institute of Geochemistry, CAS
推荐引用方式 GB/T 7714	Chen, Peijia,Wang, Xun,Yuan, Wei,et al. Typical heavy metals accumulation, transport and allocation in a deglaciated forest chronosequence, Qinghai-Tibet Plateau[J],2023,459.
APA	Chen, Peijia,Wang, Xun,Yuan, Wei,&Wang, Dingyong.(2023).Typical heavy metals accumulation, transport and allocation in a deglaciated forest chronosequence, Qinghai-Tibet Plateau.JOURNAL OF HAZARDOUS MATERIALS,459.
MLA	Chen, Peijia,et al."Typical heavy metals accumulation, transport and allocation in a deglaciated forest chronosequence, Qinghai-Tibet Plateau".JOURNAL OF HAZARDOUS MATERIALS 459(2023).