基于文献计量的农田土壤镉下渗研究现状与趋势分析OA北大核心CSTPCD

Based on the core ensemble data of China Knowledge Network(CNKI)and Web of Science(WoS),this paper analyzed the current research status,research hotspots and future development trends in the field of heavy metal Cd infiltration from agricultural soils at home and abroad in the past 21 years(2003-2023)by using bibliometrics and visualization analysis software.The results showed that the annual publication volume in this field showed an overall increasing trend,but the highest annual publication volume was low,and the highest annual publication volume in Chinese and English was only 19 and 23 articles.The research hotspots in Chinese literature mainly focused on"heavy metals","numerical modeling","transport"and"soil",while the English literature mainly focused on"cadmium","agricultural soil","heavy metals"and"fluxes".Researchers at home and abroad had initially grasped the process of heavy metal Cd seepage and transport in agricultural soils,the influencing factors,the calculation method of seepage flux and the model simulation.The current research mainly focused on indoor simulation experiments(e.g.,soil column experiments),but lacks long-term monitoring of Cd infiltration process in agricultural soils under natural conditions.Meanwhile,research on the effects of extreme weather conditions and wet-dry alternation on Cd infiltration and transport in agricultural fields was still insufficient.Future research should focus on monitoring the infiltration process of Cd in the field,deepening the study of the influence mechanism of the infiltration process,and modeling the infiltration and export of heavy metal Cd from agricultural soils at multiple scales.