Comprehensive Assessment of Health and Ecological Risk of Cadmium in Agricultural Soils Across China: A Tiered Framework

作     者：Huang, Xinhua Li, Xuzhi Zheng, Liping Zhang, Ya Sun, Li Feng, Yanhong Du, Junyang Lu, Xiaosong Wang, Guoqing 

作者机构：State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control Nanjing Institute of Environmental Sciences Ministry of Ecology and Environment Nanjing210042 China College of Environment Science and Engineering Yangzhou University Yangzhou225127 China 

出 版 物：《SSRN》 

年 卷 期：2023年

核心收录：

主　　题：Cadmium 

摘      要：Soil cadmium (Cd) contamination has been increasingly serious in agricultural land across China, posing unexpected risks to human health concerning crop safety and terrestrial ecosystems. This study collected Cd concentration data from 3388 soil sites in agricultural regions through reference retrieval and sampling survey. To assess the pollution status and Cd associated risks, a tiered framework was applied based on Accumulation index, deterministic method (Hazard quotient), and probabilistic assessment (Monte Carlo and Joint Probability Curve). The results revealed the widespread Cd enrichment in agricultural soils, mainly concentrated in Central, Southern, and Southwest China. Risk assessments demonstrated the greater risks related to crop safety, while the ecological risks posed by soil Cd were manageable. Notably, agricultural soils in southern regions of China exhibited more severe risks to both crop safety and soil ecosystem, compared to other agricultural regions. Furthermore, source analysis identified industrial emission as the primary contributor to Cd pollution and the associated risks. The study provides a theoretical basis for policymakers to prevent and manage Cd pollution in farmland soils of China. © 2023, The Authors. All rights reserved.