2024 | Sajjad Raza, Annie Irshad, Andrew Margenot, Kazem Zamanian, Nan Li, Sami Ullah, Khalid Mehmood, Muhammad Ajmal Khan, Nadeem Siddique, Jianbin Zhou, Sacha J. Mooney, Irina Kurganova, Xiaoning Zhao, Yakov Kuzyakov
The study quantifies global soil carbon (C) research trends and the proportional focus on soil organic C (SOC) and soil inorganic C (SIC) pools through a bibliometric analysis. Despite SOC receiving 96% of publications and citations, SIC, which is a long-lived pool with a turnover rate of over 1000 years, is understudied. The research highlights that while SOC studies have a higher impact per publication, SIC studies have a higher impact per citation. The study also reveals that approximately 40% of soil C research is related to climate change, with SOC studies having a higher impact in this area. The research is concentrated in a few countries, with China and the USA contributing 45% of the total research. The study calls for expanding the focus on SIC in research, applications, and modeling to better understand its role in the global C cycle and climate change mitigation.The study quantifies global soil carbon (C) research trends and the proportional focus on soil organic C (SOC) and soil inorganic C (SIC) pools through a bibliometric analysis. Despite SOC receiving 96% of publications and citations, SIC, which is a long-lived pool with a turnover rate of over 1000 years, is understudied. The research highlights that while SOC studies have a higher impact per publication, SIC studies have a higher impact per citation. The study also reveals that approximately 40% of soil C research is related to climate change, with SOC studies having a higher impact in this area. The research is concentrated in a few countries, with China and the USA contributing 45% of the total research. The study calls for expanding the focus on SIC in research, applications, and modeling to better understand its role in the global C cycle and climate change mitigation.