摘要
为了明确当前国际氮肥施用研究领域的研究热点、发展态势,文章基于ISI Web of Science数据库,采用文献计量学方法,根据发文量、发文机构、发文期刊以及论文被引频次等指标,对全球发表于1957─2014年8月的关于农田施氮的SCI文献进行了数量和质量分析。结果显示,与农田施氮研究相关的SCI论文共有7 460篇,主要集中在氮肥施用对作物产量、大气环境以及水体质量的影响等3个方面。近5年来,该领域发文量迅速增加,年均发文量均在400篇以上。欧美发达国家研究起步早、基础好、水平高,尤其美国优势明显,共计发文1 893篇,其中美国农业部是发文量最多的机构;中国虽起步较晚,但发展迅速,目前总发文量已排到全球第2位(784篇),中国科学院和中国农业大学发文量排在全球第3和第4位,南京农业大学和中国农业科学院发文量也排在了全球前25位。刊发该领域文章最多的期刊以及被引频次超过300的论文均出自欧美国家,中国学者的研究成果也得到了国际认可,有2篇文章被引频次在270以上,但中国仍缺少有影响力的主流国际期刊。因此,尽管中国在该领域的研究实力近年来不断增加,但仍需要加快培养一批有影响力的主流国际期刊,促进产出更多的优秀成果。此外,农田氮肥施用对作物产量和环境质量的影响仍将是未来研究的主要内容,而确定兼顾氮肥农学效应与环境效应的农田适宜施氮量将是未来研究的重点。
In order to identify hot topics and trends of international research on farmland nitrogen (N) application, SCI articles indexed by ISI Web of Science database during 1957 to August 2014 were retrieved and analyzed. Literature quantity and quality including number of articles, institutions of publications, journals and citation frequency were analyzed by using the bibliometric method. The results showed that a total of 7460 SCI articles were published in the field of farmland N application during this period, and that the articles were mainly focused on the impacts of N fertilizations on crop yields, atmospheric environment and water quality. During the past five years, the number of articles increased rapidly and the annual average number of articles reached > 400. American and European countries were pioneers in the research and managed to build high-quality research upon a good foundation. Especially, the United States was obviously leading the research with a total of 1893 articles, and the largest institution of publications was the United States Department of Agriculture. China started the research in this field relatively late, but it had developed rapidly in recent years and had become the second largest publication country (784 articles) in the world. In terms of total publications by each institution, the Chinese Academy of Sciences and Chinese Agricultural University ranked the third and fourth in the word respectively, and Nanjing Agricultural University and the Chinese Academy of Agricultural Sciences also entered into the world top 25. The journals that published most articles in this field and the papers with citations of > 300 were all produced in European and American countries. Research by the Chinese scholars had been internationally recognized gradually, and there were two articles with citations of > 270, but China is still lack of the high impact mainstream international journals in the field of farmland N application. Therefore, even though research capabilities of the Chinese institutions in this field have increased rapidly in recent years, it is urgently needed to produce a batch of high impact mainstream international journals to promote outputs of more outstanding achievements. In addition, research on effects of N application on crop yields and environmental quality will still be the main direction, and identifying optimal N application rate to achieve goals of both crop yield and environment will be the focus of this field in the future.
出处
《生态环境学报》
CSCD
北大核心
2015年第8期1415-1424,共10页
Ecology and Environmental Sciences
基金
公益性(农业)行业科研专项项目(201003014)
