Metadata is a prerequisite tool for library to participate in data curation services. In the base services of data curation, librarians select and recommend metadata standards and elements for researchers. Librarians design a complete set of plan of metadata for self-built data repository which aimed at serving data curation. Besides, metadata was applied with different depth to public data repositories, data curation system software, and cooperative projects. In addition, the library also attached great importance to metadata skills training of data librarians.%元数据是图书馆参与科学数据管理的必备工具，图书馆在科学数据管理的基础服务中多为科研人员提供元数据标准和元素的选择与推荐，在自建的数据仓储中图书馆通过整套元数据方案的设计保证数据仓储服务于科学数据管理工作，而元数据在公共数据仓储、科学数据管理系统软件以及合作项目中都有不同深度的应用。此外，图书馆领域还重视科学数据馆员的元数据技能培训。
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