Abstract

Soil science research has undergone significant transformation over the past two decades, driven by increasing awareness of climate change, environmental contamination, and sustainable agriculture demands. This comprehensive bibliometric analysis examines global research trends in soil science focusing on climate interactions, contaminant dynamics, and nutrient cycling using 47,832 peer-reviewed publications from Web of Science Core Collection (2000-2024). Research output increased exponentially from 1,247 publications in 2000 to 3,891 publications in 2023, representing a 212% growth rate. Climate-related soil research dominated with 18,456 publications (38.6%), followed by nutrient cycling studies (15,723 publications, 32.9%) and contaminant research (13,653 publications, 28.5%). China emerged as the leading contributor with 14,267 publications (29.8%), followed by the United States (8,934 publications, 18.7%) and Germany (4,523 publications, 9.5%). Keyword co-occurrence analysis revealed five major research clusters: (1) climate change and carbon sequestration, (2) heavy metal contamination and remediation, (3) nitrogen cycling and greenhouse gas emissions, (4) microbial ecology and biogeochemistry, and (5) sustainable agriculture and soil health. Citation network analysis identified highly influential works, with the most cited publication receiving 2,847 citations focusing on global soil carbon stocks. Temporal analysis showed shifting research priorities, with climate-related studies increasing 340% between 2000-2023, while traditional soil chemistry topics declined relatively. International collaboration intensity increased significantly, with multi-country publications rising from 12.3% in 2000 to 34.7% in 2023. Journal impact factor analysis revealed that high-impact publications (IF > 5.0) comprised 23.4% of climate studies compared to 15.8% for contaminant research. Emerging research frontiers include soil microbiome applications, precision agriculture technologies, and nature-based solutions for climate adaptation. This analysis reveals soil science's evolution toward interdisciplinary, globally collaborative research addressing critical environmental challenges, with implications for future research directions and funding priorities.