基于文献计量的土壤遗留效应研究态势与热点分析

Soil legacy effect is an important mechanism mediating the interaction between plant community and soil characteristics,which not only affects plant community dynamics and species coexistence,but also plays an important role in land use and management.In order to further deepen the understanding of the research on soil legacy effect and explore the research focus of this research field in the future,this paper adopts the bibliometric method,with"soil legacy"or"soil legacy effect"as the key words.By searching relevant articles published from 2000 to 2022 in the Web of Science database,and excluding conference abstracts,editorial materials,book chapters,etc.,which are not strongly relevant to the topic,1518 literatures are finally obtained,including 1449 journal papers and 69 review papers.The paper analyzed the number of publications,literature journals and citation frequency,subject distribution,publishing country,institution,author and keyword hotspots,etc.VOSviewer software was used to construct keyword co-occurrence graph,and Scimago Graphica software was used to visualize the cooperative relationship between different publishing countries.The results showed that the number of papers published in the field of soil legacy effect showed an overall upward trend,which could be roughly divided into initial stage,steady growth stage and rapid development stage.The content of this research involves many disciplines,among which ecology,environmental science,soil science and plant science are the main published disciplines in this field.At present,the United States leads the field of soil legacy effect research,with the United States Department of Agriculture being the most published institution(646).Although China started late in this research field,it has developed rapidly,and as a developing country,it has made outstanding contributions in this research field.Meanwhile,the number of papers published by domestic scientific research institutions represented by the Chinese Academy of Sciences is second only to that of the United States.Soil Biology Biochemistry is the main publication journal of the field of research.Highly cited papers are mostly concentrated in top journals published by foreign scholars,while China still lacks influential international journals,so it is still necessary to strengthen the output of high-level and highly recognized research results in this field.At present,the field of research shows an increasing trend of global exchanges and connections,but considering the factors of geographical location,the research teams will need to strengthen their cooperation in the future.In addition,the research focus in this field mainly focuses on the following aspects:the impact of soil legacy effect on soil microbial communities,agricultural land management and use,the impact on the restoration of different ecosystems,and the climate factors driving legacy effect,which will remain the focus of future research.In addition,future studies can be combined with emerging technologies,such as remote sensing,GIS and model simulation,to promote quantitative assessment and prediction of soil legacy effect,provide support for sustainable land management and ecosystem development.