The fifth chapter is the application of Shanghai Geo-metadata System that descript the range and target and stituation, the manager of entity code, the frame of Geo-metadata service, and and example of EPB(Shanghai Environmental Protection Bureau).

• 第五章是上海市地理元数据系统的应用，描述了应用的范围、对象和情况，对实体编码的管理，元数据服务应用框架以及上海市环保局的一个应用实例。