基于JCR的农林科学期刊影响因子、出版周期分析

该文以《期刊引文报告》(JCR)数据库的2002年的资料,集中分析农林科学期刊的影响因子、出版周期等因素。JCR数据库收录农林科学类的期刊有200种,占所收录期刊总数的3.4%。其影响因子值平均为0.654,与其它学科比较,处于较低的水平。通过影响因子的区间分析,该学科的期刊符合布拉德福的文献分布二、八定律,即高影响因子的期刊只有20%,而80%的期刊是分布在影响因子值低于1以下的范围。文中还列出了该学科影响因子值最高的20种期刊,主要是由美国和英国出版。同时还分析了农林科学期刊的特点,以及我国农林科学期刊的现状和特点,提出了提高我国农业科技期刊影响力的建议。

Analysis of the Impact Factor and Publication Periodicity on Journals of Agricultural and Forest Sciences Based on JCR

The result of this paper is based on analyzing JCR data in 2002. It focuses on impact factors and publication periodicity of journals of agricultural and forest sciences. JCR collected about 200 journals of agricultural and forest sciences, which are about 3.4% of total number. Among these journals the average value of impact factors is 0.654. It is relatively lower than that in other disciplines. By analyzing intervals of impact factor distribution, it fits the theory of Bradford, 20 and 80 distributions". It means that impact factors in 20% of journals are high, and 80% of journals are lower than 1.0. The impact factors of the top 20 journals are listed, and most of them are published in the U.S. and Great Britain. Some characteristics of those journals are analyzed, and the status of Chinese journals of agricultural and forest sciences is revealed. The paper also gives some suggestion to develop Chinese sci-tech journals of agricultural and forest sciences with higher impact factors.