Statistics and analysis of abstracts in forestry sci-tech periodicals

Key words: 
• forestry periodicals /
• sci-tech articles /
• abstract /
• statistics and analysis

Abstract: Data Norm for Retrieval and Evaluation of Chinese Academic Journal (CD) regards abstracts as a necessity in sci-tech academic periodicals .In order to understand status quo of different type of abstracts , statistics was carried out concerning the number of abstracts and words in 9 forestry periodicals published in 2000 .80 % of articles in four periodicals had abstract of their own , but in some periodicals , above 60 % of articles didn't have any .In A-category articles , the range of the number of different type abstracts belonged to reported abstract reproted-indicated abstract indicated abstract ;In B-category articles , reported-indicated abstract indicated abstract reported abstract ;In C-category articles , indicated abstract reported-indicated abstract reported abstract .Average words of reported abstracts , reported-indicated abstract and indicated abstract were 190.2 ,117.5 and 77.7 , respectively .Multiple comparisons showed that there were obvious differences among words of different types of abstracts .The words of abstracts were not only related to the abstract types , but also to information content in original documents and complex degree of researched objects .For an article , the reported abstract should have its uniqueness .