文章对近年来美国公共图书馆资源采购及流通情况进行概述,并重点选取其馆藏印刷图书和电子书两类资源,对两者历年的采购预算及流通量数据采用定量时间序列的数学模型,模拟回归趋势,预测发展态势,以期为未来公共图书馆资源建设的发展、转型提供依据。 This article gives an overview of the procurement and circulation of resources in public libraries in the United States in recent years, and focuses on the selection of two types of resources: collections of printed books and e-books. The mathematical models of the procurement budget and liquidity data for the past two years are established using quantitative time series. Return to the trend, predict the development trend, in order to provide the basis for the future development of the public library resource construction, transformation.