知识经济时代的到来,必将导致信息量的急剧增长,信息需求的剧增。随着我国经济、科技改革的不断深入,信息在社会各方面的作用越来越突出。企业、机关、团体和个人形成了庞大的信息用户群,他们迫切需求政策、科技、金融、技术、产品、市场、劳务、人才和生活等方面的信息。信息产业、信息服务发展迅速。在这种形势下,做为信息的集散地图 The advent of the era of knowledge-based economy will surely lead to a drastic increase in the amount of information and a surge in information demand. With the continuous deepening of China’s economy and science and technology reform, the role of information in all aspects of society has become increasingly prominent. Enterprises, institutions, groups and individuals form a huge information user base. They urgently need information on policies, science and technology, finance, technology, products, markets, services, personnel and living. The information industry and information service are developing rapidly. In this situation, as a distribution map of information