Pollution levels and toxicity risks of heavy metals in different reed wetland soils following channel diversion in the Yellow River Delta

doi:10.1007/s13157-022-01547-5

	Pollution levels and toxicity risks of heavy metals in different reed wetland soils following channel diversion in the Yellow River Delta
	Wu, Qiutang 1,2; Bian, Fuhua 1; Eller, Franziska 3; Wu, Mengdi 2,4; Han, Guangxuan2,5 ; Yu, Junbao6 ; Guan, Bo2,6
发表期刊	WETLANDS
ISSN	0277-5212
	2022-04-01
卷号	42 期号:4 页码:13
关键词	Coastal wetlands River changes Reed community Soil elements Spatial distribution Pollution index
DOI	10.1007/s13157-022-01547-5
通讯作者	Guan, Bo([email protected])
英文摘要	The spatial distribution characteristics of soil elements in estuarine wetlands, which are important indicators for the health of estuaries, are affected by the dynamic changes of river flow paths. To reveal the differences of the spatial distribution characteristics of soil elements following channel diversion, we selected three typical reed (Phragmites australis) communities in the Yellow River Delta: the abandoned Yellow River course (OC): the reed community in the riparian zone of the old course of the Yellow River, which was diverted in 1996; the new Yellow River course (NC): the reed community on the current river bank; the intertidal area (TC): reed communities on tidal flats not affected by the Yellow River but frequently by tides. The soil properties and spatial distribution characteristics of 17 soil elements were analyzed, and the Geoaccumulation Index (I-geo), Enrichment Factor (EF), Toxin Units (TUs) and New Toxicity Index (TRI) were used to evaluate the ecotoxicity of heavy metals. The mean pH value followed the order TC site (8.05) > NC site (7.97) > OC site (7.87). The electrical conductivity at the NC site (4.10 mS cm(-1)) was significantly lower than at the OC site (6.46 mS cm(-1)) and TC site (6.86 mS cm(-1)) (p < 0.05). The mean concentrations of P, Mo, Fe, Zn, Cu, Cr, Ni and As in the surface soil (0-20 cm) at the NC site were lower than those at the OC site and TC site (p < 0.05). The results of vertical distribution of elements showed that the concentrations of most heavy metals at the OC and TC site decreased along the depth of the soil layers and the highest values appeared in the upper soil layers. While the NC site was different, the highest heavy metal concentrations were found in the lower soil layers. The values of I-geo indicated that Ni, As and Mo at the OC and TC site, and As and Hg at the NC site showed high toxicity risks. The EF values for Cu, Ni, As, Mo and Hg of all three sites exceeded 1.5, implying that these elements might come mostly from anthropogenic sources. In addition, Ni, As and Cr exhibited higher contribution ratios based on TRI values and sigma TUs. Meantime, the sigma TUs and TRI values indicated that the TC site had the highest, and the NC site had the lowest toxicity risk. The channel diversion increased the risk of soil pollution at the OC site. It is necessary to carry out long-term monitoring and control measures to avoid potential ecological damage.
资助机构	National Natural Science Foundation of China
收录类别	SCI
语种	英语
关键词[WOS]	FRESH-WATER ; SURFACE SEDIMENTS ; YANGTZE-RIVER ; CONTAMINATION ; DISTRIBUTIONS ; SPECIATION ; DYNAMICS ; SOUTHERN ; REGION ; SEA
研究领域[WOS]	Environmental Sciences & Ecology
WOS记录号	WOS:000773919400001
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/37600
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室支撑部门_中国科学院黄河三角洲滨海湿地试验站
通讯作者	Guan, Bo
作者单位	1.Yantai Univ, Coll Life Sci, Yantai 264005, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc,YICCAS,CAS, Yantai 264003, Shandong, Peoples R China 3.Aarhus Univ, Dept Biol, Ole Worms Alle 1, DK-8000 Aarhus C, Denmark 4.Yantai Univ, Sch Environm & Mat Engn, Yantai 264005, Peoples R China 5.Chinese Acad Sci, Yellow River Delta Field Observat & Res Stn Coast, Dongying, Peoples R China 6.Ludong Univ, Inst Adv Study Coastal Ecol, Yantai 264025, Peoples R China
推荐引用方式 GB/T 7714	Wu, Qiutang,Bian, Fuhua,Eller, Franziska,et al. Pollution levels and toxicity risks of heavy metals in different reed wetland soils following channel diversion in the Yellow River Delta[J]. WETLANDS,2022,42(4):13.
APA	Wu, Qiutang.,Bian, Fuhua.,Eller, Franziska.,Wu, Mengdi.,Han, Guangxuan.,...&Guan, Bo.(2022).Pollution levels and toxicity risks of heavy metals in different reed wetland soils following channel diversion in the Yellow River Delta.WETLANDS,42(4),13.
MLA	Wu, Qiutang,et al."Pollution levels and toxicity risks of heavy metals in different reed wetland soils following channel diversion in the Yellow River Delta".WETLANDS 42.4(2022):13.