基于文献计量学的养分添加影响植物干旱响应的可视化分析

Visual Analysis of Effects of Nutrients on Plant Drought Responses Based on Bibliometrics

全球气候变化背景下,越来越多的研究表明未来全球干旱发生的强度和频率还会继续增加,这将进一步制约植物生长,甚至导致植物死亡。很多研究发现养分添加会影响植物对干旱胁迫的响应,但是缺乏文献追踪和可视化研究。因此,本文基于文献计量的方法,利用R语言的Bibliometric包对在Web of Science核心合集中搜集的关于养分添加影响植物干旱胁迫响应的文献进行全面分析。结果表明,在2008~2021年间,关于养分添加影响植物干旱响应的论文数量呈持续增长趋势,特别是2018年以来增长最快。该领域发文数量最多的机构是西北农林科技大学(43篇),而且各机构间有较为紧密的合作关系。研究论文大多发表在农业、林业领域期刊,其中发表论文数量最多的期刊是Agronomy-Basel,H指数最高的是Global Change Biology。出现频率最高的关键词有“drought”“climate change”“fertilization”“nitrogen”“yield”以及“water use efficiency”等。关键词聚类分析表明,在养分添加影响植物干旱响应的一系列研究中,国内外科研人员重点关注植物产量、水分利用效率和植物生理动态过程。基于全球气候变化的背景,预测养分添加影响植物干旱响应的机制将是该领域重要的研究方向。

Under global climate change,increasing number of studies indicate that the intensity and frequency of drought will continue to increase globally in the future,becoming the main factor restricting plant growth and leading to plant death.Many studies had found that nutrient addition could affect plant responses to drought stress,but there was a lack of literature tracking and visualization studies.Therefore,we conducted a comprehensive analysis on relevant research papers searched in Web of Science,mainly using bibliometric methods and R bibliometric packages.The results showed that the number of published papers on the effects of fertilization on plant drought responses continued to increase from 2008 to 2021,with the most rapid increase since 2018.Northwest A&F University had the largest number of publications in this field(43),and there was a close cooperative relationship among various institutions.Most of the research papers were published in agricultural and forestry journals,among which Agronomy-Basel had the largest number of papers and Global Change Biology had the highest H-index.The most frequent keywords during the 14 years included drought,climate change,fertilization,nitrogen,yield and water use efficiency.The results of cluster analysis showed that in a series of studies on the effects of nutrient addition on plant response to drought,researchers focused on the water use efficiency,plant yield and plant physiological dynamics.Based on the background of global climate change,we predicted that the mechanism of nutrient addition affecting plant drought response would be an important research direction in this field in the future.