The abstract is the prime of the thesis, the window of information showing the academic level of the thesis, and one of the bases of being collected and applied. The content of the abstract is the deterministic: factor for judging the quality of the abstract. Through the retrieval of the foreign and Chinese abstracts of more than 800 theses published in various state-level natural science periodicals such as the forestry science periodicals and transferring them onto Internet, this paper finds that the contents of the abstracts of the academic...