Along with the universities＇ increasing investment to the library, the reasonable use of library resource becomes more and more important under the digital environment. At the same time, the investment of library digitalized collection＇ s proportion is getting larger and larger with the network development and the changing methods of scientific research. Thus, the assessing of digital library resource usage is the reflection of the library service a chievements. The article, by taking Shanxi University library as an example, systematically analyzes and explains the statistical data of resource usage related to digital service achievements so as to construct a relatively reasonable digital collection system by fulfilling the requirements of Shanxi University library.%随着高校对图书馆经费投入的不断增加，数字环境下图书馆的合理使用变得越来越重要。而图书馆数字化馆藏的投入也随着网络的发展和人们科研习惯的变迁所占的比重越来越大，因而，对数字资源的使用统计就成为反映数字图书馆服务绩效的重要指标。文章以山西大学图书馆为例，对于数字服务绩效评估相关的使用统计数据进行系统的分析与阐释，借以构建符合山西大学图书馆要求的相对合理的数字馆藏体系。
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