草原是地球上最普遍的环境之一,然而,在人类活动和气候变化的背景下,我们仍然对微生物介导的碳循环知之甚少。我们对1990年至2022年Scopus数据库中的1,660篇文献进行了系统的文献计量分析,重点是微生物介导的草地碳循环。我们观察到自2000年代以来,多学科和跨学科研究的数量急剧增加,重点领域是十大学科类别,尤其是农业和生物科学。此外,美国,澳大利亚,德国,联合王国,中国,奥地利表现出高水平的生产力。我们透露,这八篇论文对塑造这一领域未来的研究至关重要,主要研究主题集中在微生物呼吸上,互动关系,微生物生物质碳,甲烷氧化,和高通量测序。我们进一步强调,微生物介导的草地碳循环的新研究热点主要集中在关键词“碳利用效率,“\”酶活性,“\”微生物群落,“和”高通量测序。“我们在过去三十年中的文献计量分析为微生物介导的草地碳循环的多学科和不断发展的领域提供了见解,不仅要总结文献,还要批判性地识别研究热点和趋势,智力基础,以及现有集体知识体系内的相互联系,并为未来的研究方向指明道路。
Grasslands are among the most widespread environments on Earth, yet we still have poor knowledge of their microbial-mediated carbon cycling in the context of human activity and climate change. We conducted a systematic bibliometric analysis of 1,660 literature focusing on microbial-mediated grassland carbon cycling in the Scopus database from 1990 to 2022. We observed a steep increase in the number of multidisciplinary and interdisciplinary studies since the 2000s, with focus areas on the top 10 subject categories, especially in Agricultural and Biological Sciences. Additionally, the USA, Australia, Germany, the United Kingdom, China, and Austria exhibited high levels of productivity. We revealed that the eight papers have been pivotal in shaping future research in this field, and the main research topics concentrate on microbial respiration, interaction relationships, microbial biomass carbon, methane oxidation, and high-throughput sequencing. We further highlight that the new research hotspots in microbial-mediated grassland carbon cycling are mainly focused on the keywords \"carbon use efficiency,\" \"enzyme activity,\" \"microbial community,\" and \"high throughput sequencing.\" Our bibliometric analysis in the past three decades has provided insights into a multidisciplinary and evolving field of microbial-mediated grassland carbon cycling, not merely summarizing the literature but also critically identifying research hotspots and trends, the intellectual base, and interconnections within the existing body of collective knowledge and signposting the path for future research directions.