Wang Chunling, Hu Jie, Zhang Yike, Di Yani, Wu Xiaogang
College of Urban and Rural Construction, Shanxi Agricultural University, Taigu 030801, China.
Chenggu County Binjiang New Town Construction Management Center, Chenggu 723200, China.
Ecotoxicol Environ Saf. 2025 Jun 15;298:118271. doi: 10.1016/j.ecoenv.2025.118271. Epub 2025 May 8.
The environmental quality of urban riparian soil has an impact on the riparian ecosystem and human health. The riparian zone of the Fen River plays an important ecological function in Taiyuan city and many residents and tourists enjoy recreational activities in Fen River Park. Therefore, environmental quality of the riparian zone is closely related to the health of residents. However, the concentrations and ecological risk of heavy metals in soils of the Fen River riparian zone is not well understood, and it is also uncertain whether heavy metals pose a potential risk to human health. So we estimated the ecological and health risks of six heavy metals to determine the status of soil quality in the riparian zone of the Fen River. The mean concentrations of cadmium (Cd), mercury (Hg), and lead (Pb) in the soil were higher than the background values in the Shanxi Province and in Chinese. For Cd and Hg, the soils were slightly to moderately polluted, but for the other heavy metals, the soils were unpolluted according to the I, P, and E indexes. We therefore concluded that Cd and Hg were the priority pollutants in the study area. The top soil of the "Shrub" configuration was slightly to moderate polluted according to the P and RI. Transport was the main source of Pb, Hg, and zinc (Zn), while Cd mainly originated from industry, and copper (Cu) and chromium (Cr) were came from natural sources. The health risk posed by heavy metals was greater for children than for adults. The levels of Cd and Cr did not present an obvious carcinogenic risk to humans. The non-carcinogenic risk to humans was found to be negligible. The results demonstrated the need for monitoring and analysis of heavy metals in soils, and provide a scientific basis for the protection and restoration of the urban riparian ecosystems.
城市河岸土壤的环境质量对河岸生态系统和人类健康有影响。汾河河岸带在太原市发挥着重要的生态功能，许多居民和游客在汾河公园进行休闲活动。因此，河岸带的环境质量与居民健康密切相关。然而，汾河河岸带土壤中重金属的浓度和生态风险尚不清楚，重金属是否对人类健康构成潜在风险也不确定。因此，我们估算了六种重金属的生态和健康风险，以确定汾河河岸带土壤质量状况。土壤中镉（Cd）、汞（Hg）和铅（Pb）的平均浓度高于山西省和全国的背景值。根据I、P和E指数，对于Cd和Hg，土壤受到轻度至中度污染，但对于其他重金属，土壤未受污染。因此，我们得出结论，Cd和Hg是研究区域的优先污染物。根据P和RI，“灌木”配置的表层土壤受到轻度至中度污染。交通是Pb、Hg和锌（Zn）的主要来源，而Cd主要源于工业，铜（Cu）和铬（Cr）来自自然源。重金属对儿童造成的健康风险大于成人。Cd和Cr的水平对人类未呈现明显的致癌风险。发现对人类的非致癌风险可忽略不计。结果表明需要对土壤中的重金属进行监测和分析，并为城市河岸生态系统的保护和恢复提供科学依据。
