从空间数据库模型的角度出发，深入分析长江流域生态环境数据的主要种类及其特点，引入GeoDatabase模型的基本概念，尝试使用GeoDatabase模型来组织和管理这些数据，并分别给出长江流域生态环境信息库中特征数据集、栅格数据集和TIN数据集的组织方式，讨论空间数据与属性数据的连接方法，最后进行了模型评价。

From the perspective of the recent advance of spatial database modeling technology, this paper deeply analyses data classification and their characters of the Yangtze River Ecoa2environment Information Database(YREID), introduces basic concepts of GeoDatabase model, and attempts to manage and organize these data using GeoDatabase model. Then it provides data organization of feature dataset, raster dataset and TIN dataset in YREID, and discusses the links between spatial database and attribute database. Finally, model evaluation and its future advance are also presented.