中文摘要：

运用组件式地理信息系统Supermap软件作为开发平台,采用软件工程的方法,利用面向对象的建模技术和组件开发方式,建立三维地形动态显示及土方量计算系统.介绍了构建系统的关键技术和方法,采用三层架构体系,实现了三维地形建模、显示、浏览、空间分析和工程土方量计算等功能.该系统已成功运用于广州花都区高新科技及物流产业基地的建设方面,能够直观显示产业基地的三维场景,对于该基地的前期场地平整和土地利用规划起到一定指导作用.

英文摘要：

We establish a system about the dynamic display of 3D terrain and the earthwork calculation based on the COM GIS,adopting the method of software engineering and using the oriented object modeling technology and the component developed mode.It represents the key technology and method about building the system,has realized the function of the 3D terrain modeling,display,browse,spatial analyse and the earthwork calculation,etc.The system has been succeed in applying to the construction of the high-new technological and logistic industrial base in the Huadu district,Guangzhou city,which can display 3D scene and can instruct the ground level and land-use planning about the industrial base.