气候变化领域集成服务门户(CCPortal): Insight into atmospheric deposition and spatial distribution of bioavailable iron in the glaciers of northeastern Tibetan Plateau

CCPortal

DOI	10.1016/j.scitotenv.2022.153946
	Insight into atmospheric deposition and spatial distribution of bioavailable iron in the glaciers of northeastern Tibetan Plateau
	Di, Jie; Dong, Zhiwen; Parteli, Eric J. R.; Wei, Ting; Marcelli, Augusto; Ren, Jiawen; Qin, Xiang; Chen, Shifeng
通讯作者	Dong, ZW ; Wei, T (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryosphere Sci, Lanzhou 730000, Peoples R China. ; Wei, T (通讯作者)，Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
发表日期	2022
ISSN	0048-9697
EISSN	1879-1026
卷号	825
英文摘要	Iron (Fe) is an essential micronutrient in glacial ecosystems and modulates global biogeochemical cycles. To find out the deposition concentration, multiple origins and release form of iron in various glacier areas of central Asia, this study investigated the total Fe (TFe) and dissolved-Fe (dFe, diameter < 0.45 or <0.2 mu m) deposition in glaciers and snowpack of northeast Tibetan Plateau, based on snow and meltwater sampling in ablation period of 2014-2017. The composition and concentration of dFe in the samples were measured, and the spatial distribution and temporal variations of dFe in glacial surface snow and meltwater runoff were investigated. Results showed that average TFe and dFe contents exhibited a generally heterogeneous geographic distribution that varied from north to south. The northern locations in eastern Tianshan Mountains (e.g. Miaoergou Glacier) showed the highest TFe and dFe values, followed by Yuzhufeng Glacier of eastern Kunlun Mountains, whereas the Qilian Mountains locations displayed relatively lower TFe and dFe contents spanning a wide range. Based on the good correlation between TFe and dFe, we infer that aeolian dust and anthropogenic aerosols, and their chemical interactions are likely the important origins for dFe deposition. In meltwater runoff the peak values of dFe release flux appeared in July, with maximum appeared earlier (the early of July) than TFe (the end of July). Moreover, the annual dFe release flux from Laohugou glacier terminus meltwater runoff is estimated to be 1740 kg yr(-1) (with 9256 kg yr(-1) for TFe), and meltwater showed higher mean concentration of dFe than that of glacier snowpack. We also provided a conceptual framework showing the multiple origins and transport dynamics of dissolved Fe along the atmosphere-glacier-meltwater runoff path. Compared to Fe release in other global glacier/ice-sheet, the TP glacier is an important potential dFe reservoir and may have a profound effect on regional downstream ecosystem through Fe biochemistry cycle.
关键词	DISSOLVED IRON ISOTOPIC COMPOSITION DUST DEPOSITION SNOW ICE TRANSPORT MELTWATER CYCLE
英文关键词	Bioavailable iron; Spatial distribution; Multiple origins; Glacier and meltwater; Northeast Tibetan Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000766791900008
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254170
作者单位	[Di, Jie; Dong, Zhiwen; Wei, Ting; Ren, Jiawen; Qin, Xiang; Chen, Shifeng] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryosphere Sci, Lanzhou 730000, Peoples R China; [Dong, Zhiwen] Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; [Di, Jie; Wei, Ting; Chen, Shifeng] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Parteli, Eric J. R.] Univ Duisburg Essen, Fac Phys, D-47057 Duisburg, Germany; [Marcelli, Augusto] INFN LNF, Via E Fermi 54, I-00044 Frascati, RM, Italy; [Marcelli, Augusto] Basovizza Area Sci Pk, CNR Ist Struttura Mat & Elettra Sincrotrone Tries, I-34149 Trieste, Italy; [Ren, Jiawen; Qin, Xiang] Chinese Acad Sci, Qilian Mt Glacier & Ecol Environm Res Stn, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Di, Jie,Dong, Zhiwen,Parteli, Eric J. R.,et al. Insight into atmospheric deposition and spatial distribution of bioavailable iron in the glaciers of northeastern Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2022,825.
APA	Di, Jie.,Dong, Zhiwen.,Parteli, Eric J. R..,Wei, Ting.,Marcelli, Augusto.,...&Chen, Shifeng.(2022).Insight into atmospheric deposition and spatial distribution of bioavailable iron in the glaciers of northeastern Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,825.
MLA	Di, Jie,et al."Insight into atmospheric deposition and spatial distribution of bioavailable iron in the glaciers of northeastern Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 825(2022).