It is possible to classify numerous disciplines in the modern information science group into six basic levels: information philosophy,general information theory,field information,category informatics,branch informatics,and engineering informatics.

Protocols on unearthing and sharing taxonomic information have become a hotspot issue of the Global Taxonomy Initiative (GTI) under the Convention on Biological Diversity (CBD).

The Reach about the Construction of Chinese Subject Information Gateway;

This paper briefly introduces the concept of subject information gateway,analyzes the shortcomings of the traditional subject information gateway and puts forward methods to improve the establishment of subject information gateway based on library 2.

Starting from the connotations and features of the subject information gateway, this paper introduces the general development situation of domestic and foreign subject information gateway, and introduces the construction process and preliminary achievements of the chemistry subject information gateway in Chinese University of Mining &Technology library.

This paper expounds the present situation of Chinese subject information portal,and advances some solving countermeasures.

This paper introduces the concepts of the subject information portal, analyzes on some problems existing in the homepage design, the construction of the interactive platform and the construction of the subject information portal, and probes into the rationality of the payment for the subject information portal.