气候变化领域集成服务门户(CCPortal): Non-Negligible Ecological Risks of Urban Wetlands Caused by Cd and Hg on the Qinghai-Tibet Plateau, China

CCPortal

DOI	10.3390/toxics11080654
	Non-Negligible Ecological Risks of Urban Wetlands Caused by Cd and Hg on the Qinghai-Tibet Plateau, China
	Wang, Lei; Mao, Xufeng; Song, Xiuhua; Wei, Xiaoyan; Yu, Hongyan; Xie, Shunbang; Zhang, Lele; Tang, Wenjia
发表日期	2023
EISSN	2305-6304
卷号	11 期号:8
英文摘要	The Huangshui National Wetland Park (HNWP) is a unique national wetland park in a city on the Qinghai-Tibetan Plateau, containing three zones: Haihu, Beichuan, and Ninghu. In this study, a total of 54 soil samples (18 sampling points with depths of 0-10 cm, 10-20 cm, and 20-30 cm) were collected in these three zones, and the contents of heavy metals (Cr, Cd, Cu, Hg, Ni, Pb, Zn, and As) of each sample were determined. The ecological risk of eight kinds of heavy metals was evaluated by using the geo-accumulation index (I-geo), and the ecological risk-controlling effect of the Xining urban wetlands on heavy metals was explored by comparative analysis, and the possible sources of heavy metals in the soil were analyzed via correlation analysis and principal component analysis (PCA). The results revealed that the total heavy metal concentration order was Haihu > Beichuan > Ninghu zone. As and Cu presented vertical accumulation characteristics in the surface and lower horizon, respectively. Cr, Cd, Hg, Ni, Pb, and Zn accumulated downwards along the depth. On the spatial scale, the enrichments of Cd and Hg brought non-negligible ecological risks in plateau urban wetlands. The results of PCA indicated that soil heavy metals mainly came from compound sources of domestic and atmospheric influences, traffic pollution sources, and industrial pollution sources. The study has revealed that human activities have inevitable negative impacts on wetland ecosystems, while the HNWP provides a significant weakening effect on heavy metal pollution.
关键词	urban wetlands soil heavy metals ecological risk spatial variability source identification
英文关键词	HEAVY-METALS; SHALLOW LAKES; HEALTH-RISK; SEDIMENTS; SOIL; ELEMENTS; ZN; CU
WOS研究方向	Environmental Sciences ; Toxicology
WOS记录号	WOS:001056860100001
来源期刊	TOXICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283489
作者单位	Qinghai Normal University; Qinghai Normal University; Qinghai Normal University
推荐引用方式 GB/T 7714	Wang, Lei,Mao, Xufeng,Song, Xiuhua,et al. Non-Negligible Ecological Risks of Urban Wetlands Caused by Cd and Hg on the Qinghai-Tibet Plateau, China[J],2023,11(8).
APA	Wang, Lei.,Mao, Xufeng.,Song, Xiuhua.,Wei, Xiaoyan.,Yu, Hongyan.,...&Tang, Wenjia.(2023).Non-Negligible Ecological Risks of Urban Wetlands Caused by Cd and Hg on the Qinghai-Tibet Plateau, China.TOXICS,11(8).
MLA	Wang, Lei,et al."Non-Negligible Ecological Risks of Urban Wetlands Caused by Cd and Hg on the Qinghai-Tibet Plateau, China".TOXICS 11.8(2023).