目前,许多国家都在做数字化方面的工作,重点是传统文献资源的数字化保存。而对已经数字化的信息如电子书、电子期刊、网站信息等的保存问题也越来越为世人所重视,并着手实施。据调查,1998年44%的网站的寿命有1年,到2002年网站的寿命只有44天。保存数字信息刻不容缓。美国国会已 At present, many countries are doing digital work, with a focus on the digital preservation of traditional literature resources. The preservation of digitized information, such as e-books, e-journals and website information, has also been paid more and more attention by the world and started to be implemented. According to the survey, 44% of the websites in 1998 had a life expectancy of one year, and in 2002, the website had a life of only 44 days. No need to save digital information. The U.S. Congress has already