基于知识图谱的植物功能性状与环境研究前沿态势分析

Tendency analysis of plant functional traits and environments research based on knowledge map

关键词:  植物功能性状, 环境, 文献计量, 态势分析

Key words:  plant functional traits, environment, bibliometrics, tendency analysis

摘要:

为系统了解国际上植物功能性状与环境的研究进展,该研究基于Web of Science数据来源,采用Web of Science数据库分析工具和Thomson Data Analysis(TDA)进行数据清理和统计分析,并利用Ucinet和Netdraw、Excel等软件进行可视化作图。结果表明:(1)近26年来,植物功能性状与环境研究论文数量呈持续稳步增长态势,尤其近9年来呈加速增长态势。(2)近9年来,研究主题主要围绕比叶面积、叶面积(指数)、光合作用(性能)、叶厚度、叶形态、叶氮含量、叶绿素、叶绿素荧光、比根长等功能指标,及光照、温度、水(水分利用效率、干旱等)、肥(氮、磷为主)、CO₂等环境因子展开; 化学计量学在该领域应用广泛。(3)2009—2017年间,欧美等发达国家是该领域研究的主要力量。美国发文数量和文献质量均为世界领先。中国在该领域的发文量居第二位,仅次于美国,但文献篇均被引和H指数较低。中国科学院发文量以绝对优势居第一位,但文献质量有待进一步提升。(4)该领域载文量Top10期刊8种为JCR分区Q1区、2种为Q2区。其中,Plant and Soil和Plant Ecology载文量分居第一位和第二位。(5)Top10高被引论文发表于8种期刊,其第一作者分别来自美国、荷兰、加拿大、德国和法国。

Abstract:

Plant functional traits, a bridge between plants and the environment, significantly influence the function of the ecosystem and can reflect the corresponding changes of plants to the environment. The bibliometric method which is a common research tool used in various fields for systematic analysis, which can help us understand the research progress of the relation between plant functional traits and environments and provide reference data for researchers. An effective bibliometric analysis based on the Web of Science database, was carried out to provide insights into research activities on functional traits and environment from 1992 to 2017, especially recent nine years. Thomson Data Analyzer(TDA)and Ucinet, Netdraw, Excel were used for data mining, quantitative analysis and visualization mapping. Analyzed aspects included the number of publications per year, the subject category, main countries and institutes and their comparisons, peridical distributions and highly cited papers. The results were as follows:(1)In the past 26 years, the number of papers on plant functional traits and environmental research increased steadily, especially in the last nine years, the growth accelerated.(2)Research topics mainly centered on specific leaf area, leaf area(index), photosynthesis(photosynthetic characteristics), leaf thickness, leaf shape, leaf nitrogen content, chlorophyll and chlorophyll fluorescence, specific root length, and environmental factors of light, temperature, water(water use efficiency and drought, etc.), ferti-lizer(nitrogen, phosphorus), CO₂ and so on. Stoichiometry was widely used in this field.(3)During 2009-2017,European and American developed countries were the main force in this field. The number of American publications and the quality of documents led the world. China ranked the second in the number of articles in the field, ranked only the second to the United States, but the cited frequency and H index of all literatures were low. The Chinese Academy of Sciences ranked the first in the number of publications with absolute advantages, but the quality of the literature needed to be further improved.(4)Top 10 periodicals in this field were of high quality, among these publications eight were JCR division Q1, and the other two were JCR division Q2. Plant and Soil and Plant Ecology ranked the first and the second respectively in terms of article quantity.(5)Top 10 highly cited papers published in eight kinds of periodicals, and the first authors respectively from United States, Netherlands, Canada, Germany and France.