本研究旨在利用書目計量學之方法，探討臺灣地區生命科學研究者發表期刊論文之生產力分佈。研究內容包括： (一) 期刊文獻之分佈為何？ (二) 布萊德福定律之驗證； (三) 核心期刊之探討； (四) 期刊引用報告 (JournalCitationReport,簡稱JCR) 之驗証。研究樣本取自BIOSISPreviews、EMBASE及MEDLINE等國際知名之三大生命科學資料庫，總計檢索1975至2001年7月共71,536篇期刊文獻。研究結果歸納如下：本研究共2,628種期刊，平均每種期刊生產27.2篇。前89種期刊 (3.4%) 包含了50%的文獻。核心區與相關區文獻密度偏高，邊緣區期刊種數則多達2,245種，其中592種期刊只出版一篇文獻，明顯呈現文獻的分佈過於分散。以布萊德福分區法及布萊德福齊夫定律圖解法進行分析，得知臺灣地區發表之生命科學期刊文獻分佈並不十分符合布萊德福定律。進一步利用JCR比較各區期刊影響力，結果發現相關區 (第二區) 及次相關區 (第三區) 之期刊影響係數與被引用次數高於核心區。

The main purpose of this study is to explore productivity of journal literature of the life science researchers in Taiwan from perspectives of theory bibliometrics. Specifically, the distribution of journal articles was examined using Bradford's law and Bradford- Zipfs law. The relationship between journal productivity and quality was also investigated as per the impact factor and citation frequency listed in Journal Citation Reports (JCR). A total of 71,536 journal articles were retrieved from the BIOSIS Previews, MEDLNE, and EMBASE databases. The results of these studies revealed that: Zone analysis from Bradford's law and graphical formulation from Bradford-Zipfs law are inapplicable to journal distribution. Based on the impact factor and citation frequency from JCR, it can be found that the average journal impacts of the second and third zones are higher than that of the nucleus. Bradford's law of scattering and Bradford-Zipfs law identify 11 and 40 core journals, respectively, most of which were published in Taiwan.