2005—2009年生物学期刊的统计与分析

Statistical Analysis of Biological Periodicals from 2005 to 2009

以2005—2009年的生物学期刊为统计源,对其主要计量指标、英文期刊数、地区分布及出版周期进行了分析。结果表明:2005—2009年,生物学期刊的影响因子和总被引频次的平均值呈上升趋势,增长率分别为:11.55%和65.04%;平均影响因子(IF)为1.699,IF≥1的期刊有5种;平均总被引频次(CF)为8024次,CF≥1 000次的期刊有13种,占37.70%,2个指标《生态学报》均排第一。61种生物期刊中,英文版期刊比例在逐年上升,至2009年13.11%;生物期刊主要分布在北京(占47.54%)和上海(占16.39%)等地;出版周期以月刊和双月刊为主,其比例达88.52%。生物学期刊整体发展呈上升趋势,但是各刊之间发展极不平衡。

Based on biological periodicals from 2005 to 2009, the main indices for periodicals, number of English periodicals, regional distribution and publication cycle were studied in recent five years. The results showed that the mean value of impact factor（IF） and total cited frequency（CF） of biological periodicals were in an increasing tendency from 2005 to 2009 with growth rate of 11.55% and 65.04% respectively. The mean IF was 1.699, and there were five pe- riodicals with IF higher than 1. The mean CF was 8024 times, and there were 13 periodicals with CF higher than 1000 times. The IF and CF of Acta Ecologica Sinica was the highest in the 61 biological periodicals. The ratio of English periodicals of 61 biological periodicals increased year by year and reached to l 3.1 1% in 2009 from 3.45% in 2005. And the 61 biological periodicals distributed mainly in Beijing （47.54%） and Shanghai （16.39%）. Publica- tion cycle was mainly monthly and bimonthly and account for 88.52%. Biological periodicals developed in an increasing tendency, but the development among periodicals was not balance.