Wei Shuyuan, Berti Emilio, Ma Diting, Wu Qiqian, Peng Yan, Yuan Chaoxiang, Zhao Zemin, Jin Xia, Ni Xiangyin, Wu Fuzhong, Yue Kai
Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China.
EcoNetLab, German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany; Institute of Biodiversity, Friedrich-Schiller-University Jena, Jena, Germany.
J Hazard Mater. 2023 Oct 15;460:132455. doi: 10.1016/j.jhazmat.2023.132455. Epub 2023 Sep 3.
Water bodies are important carriers for lead (Pb) biogeochemical cycling, which is a key pathway of Pb transport. Although existing studies on Pb loading in inland waters have developed rapidly, a quantitative assessment of the distribution patterns and drivers of Pb concentration in inland waters at the global scale remains unclear. Here, by analyzing 1790 observations collected from 386 independent publications, we assessed the spatial distribution and drivers of Pb concentration in inland waters worldwide. We found that (1) globally, the median of Pb concentration in inland waters was 5.81 μg L; (2) among different inland water types, Pb concentration was higher in rivers, and the highest Pb concentration was in industrial land in terms of land use type; (3) Pb concentration in inland waters were positively driven by potential evapotranspiration, elevation and road density; and (4) Pb concentration showed a negative relationship with absolute latitude, decreasing from tropic to boreal regions. Overall, our global assessment of the patterns and drivers of Pb concentration in inland waters contributed to a better understanding of the natural and anthropogenic attributions of Pb in the inland hydrological cycling.
水体是铅（Pb）生物地球化学循环的重要载体，而铅生物地球化学循环是铅迁移的关键途径。尽管现有关于内陆水体中铅负荷的研究发展迅速，但全球范围内内陆水体中铅浓度分布模式及其驱动因素的定量评估仍不明确。在此，通过分析从386篇独立出版物中收集的1790个观测数据，我们评估了全球内陆水体中铅浓度的空间分布及其驱动因素。我们发现：（1）全球范围内，内陆水体中铅浓度的中位数为5.81微克/升；（2）在不同类型的内陆水体中，河流中的铅浓度较高，就土地利用类型而言，铅浓度最高的区域是工业用地；（3）内陆水体中的铅浓度受到潜在蒸发散、海拔和道路密度的正向驱动；（4）铅浓度与绝对纬度呈负相关，从热带地区到寒带地区逐渐降低。总体而言，我们对全球内陆水体中铅浓度模式及其驱动因素的评估有助于更好地理解内陆水文循环中铅的自然和人为来源。
