Trends in CASHL's document delivery service in China

This paper aims to discuss the features and development trends of China Academic Social Sciences and Humanities Library's (CASHL) internet-based document delivery service, examine the journal usage patterns of CASHL member libraries and determine the time range trends of documents requested by users. Ten years of the CASHL's document delivery service transaction data (about 860,000 items) were extracted, cleaned, integrated, and analysed. Journal use pattern is more decentralised and individualised. Request rates for older papers are continuing to increase. The different types of member libraries have large differences in terms of research requests and use.