基于知识图谱的根系对土壤侵蚀阻控作用的研究进展

Literature review on the role of root in soil erosion control based on the knowledge map

为了揭示根系对土壤侵蚀阻控作用的研发态势,笔者以中国知网(CNKI)数据库中1988—2017年的1 193篇中文核心期刊文献为原始数据,利用文献计量学方法,应用知识图谱工具CiteSpaceⅢ绘制根系对土壤侵蚀阻控作用的知识结构框架图,识别出主要载文期刊、基金来源、核心作者与机构以及该领域不同时期的热点问题与前沿趋势。研究发现:1)近30年来,该主题研究的文献量快速增长,特别是2012—2017年的发文量占近30年总量的43. 25%。2)载文期刊以水土保持类为主,受到国家自然科学基金和国家科技支撑计划支持的文献占总文献量的25. 23%。3)作者之间呈现出部分集中、整体分散的状态,并且发文频次较高作者之间的合作仅限于该团队内部。4)早期研究以根系对土壤抗冲性影响为重点,进而发展为以根系固土护坡、根系特征对土壤渗透性影响以及根—土复合体等为主导方向。研究结果可为该领域的后续研究提供参考和借鉴。

[ Background ] As the most important factor hindering the soil erosion, root plays an irreplaceable role in the process of soil erosion. At present, there are many domestic studies on the control of soil erosion by root system;however, the knowledge structure on this area is not systematically sorted.[Methods] In order to reveal the research and development trend of role of the root system in soil erosion control, this paper used the 1 193 articles from CNKI database during 1988 to 2017 as the original data, using bibliometrics and CiteSpace Ⅲto map the root system resisting erosions, identify the main journals publishing the papers of this topic, top authors and institutions, sources of major funds and hotspots in different stages of this field.[Results] 1) In the past 30 years, the number of research papers about this topic published in China showed a rapidly increasing trend. In particular, the number of papers published in 2012 - 2017 accounted for 43-25% of the total papers, and highly cited papers mainly were concentrated in 1990 - 2003. 2) The journals publishing this topic were mainly related to the disciplines of soil and water conservation, and the researches were supported by the National Natural Science Foundation of China and the National Science and Technology Support Program accounted for 25-23% of the total papers. 3) The authors showed a partially centralized, fragmented status with highfrequency authors, and the cooperation between the authors was limited to a team. 4) Studies on the intensification of soil antiscourability by plant roots were the research hotspots in 1988 -2001, and then the scientific research was dominated by root system slope protection, root system characteristics on soil permeability, and rootsoil complexes. In addition, the study of root exudates, roots increasing soil infiltration rate and the temporal and spatial dynamic processes of plant community roots evolution in soil may be the focus of research in this field in the future.[Conclusions]Through the visual excavation and analysis of knowledge maps of the role of root in soil erosion control research, it is conducive to researchers to have a more comprehensive and detailed understanding on the history and current situation of the role of root in soil erosion control research in China. This study can provide a reference for subsequent research in this field.