State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing, China.
Key Laboratory of Groundwater Sciences and Engineering, Ministry of Natural Resources, Institute of Hydrogeology and Environmental Geology, Shijiazhuang, China.
Integr Environ Assess Manag. 2021 Jul;17(4):866-876. doi: 10.1002/ieam.4390. Epub 2021 Feb 12.
The aim of this study is to assess the impact of anthropogenic activities on the ecological systems in the Xiongan New Area (XNA), China. Artificial sweeteners (ASs) were used as anthropogenic tracers to investigate how anthropogenic activities affect water, soil, and plant layers. For this purpose, the concentrations of 4 typical ASs, acesulfame (ACE), sucralose (SUC), saccharin (SAC), and cyclamate (CYC) were measured in water, soil, and plant layers. Moreover, a tracer test was conducted in the critical zone observatory (CZO) in the southern part of the study area to investigate the migration path and time of anthropogenic activities on the ecological systems. Acesulfame, SUC, SAC, and CYC were widely detected in all of the sample types, and their average values were 0.22, 0.53, 0.06, and 0.08 µg/L in the water layer; 0.04, 0.18, 0.06, and 0.06 µg/kg in the soil layer; and 1.79, 0.11, 4.42, and 0.95 µg/kg in the plant layer, respectively. The tracer test showed that 1.1% to 1.8% of the impacts of the anthropogenic activities migrated from the surface to the shallow aquifer within 13 d, 6% to 19% migrated to the maize layer within 28 d, and 79% to 93% were adsorbed and biodegraded in the soil layer. Therefore, the scope and strength of the influence of the anthropogenic activities on the environmental media exhibit a decreasing sequence of maize > water > soil. This study not only quantitatively characterizes the impact of anthropogenic activities on the ecological environment but also presents the first comprehensive overview of the environmental fate of ASs in the critical zone of the XNA, China. Integr Environ Assess Manag 2021;17:866-876. © 2021 SETAC.
本研究旨在评估人为活动对中国雄安新区（XNA）生态系统的影响。人工甜味剂（ASs）被用作人为示踪剂，以研究人为活动如何影响水、土壤和植物层。为此，在水、土壤和植物层中测量了 4 种典型 ASs（乙酰磺胺酸钾（ACE）、三氯蔗糖（SUC）、糖精（SAC）和环已基氨基磺酸钠（CYC））的浓度。此外，在研究区南部的关键带观测站（CZO）进行了示踪剂试验，以研究人为活动对生态系统的迁移路径和时间。在所有样品类型中均广泛检测到乙酰磺胺酸钾、三氯蔗糖、糖精和环已基氨基磺酸钠，其平均值分别为水层中的 0.22、0.53、0.06 和 0.08μg/L；土壤层中的 0.04、0.18、0.06 和 0.06μg/kg；以及植物层中的 1.79、0.11、4.42 和 0.95μg/kg。示踪剂试验表明，在 13d 内，有 1.1%至 1.8%的人为活动影响从地表迁移到浅层含水层，在 28d 内，有 6%至 19%迁移到玉米层，而 79%至 93%则被吸附和生物降解在土壤层中。因此，人为活动对环境介质的影响范围和强度表现出玉米>水>土壤的递减顺序。本研究不仅定量描述了人为活动对生态环境的影响，还首次全面概述了中国雄安新区关键带中人工甜味剂的环境归宿。《综合环境评估与管理》2021 年；17：866-876。版权所有 2021 SETAC。
