对"数字地球"的几点认识

自“数字地球”的概念被提出以来，已引起全球的广泛关注和积极响应。然而，数字地球在目前还仅仅是一个概念。为了逐步建立“数字地球”，需要就“数字地球”的理论、技术以及实现进行深入地探讨。从“数字地球”的产生背景、基本概念、研究内容、构成框架、关键技术、实施难点和发展战略等方面谈了对“数字地球”的一些认识。

Some Points to Understand Digital Earth

Since it was brought forward,the concept of digital earth has already attracted broad concerns and positive response throughout the world.Digital earth at the moment,however,is just a concept.To gradually establish the digital earth,it needs further and deeper exploration and discussion on its theory,technology and realization.This article gives out some understanding views towards digital earth-its initial background,basic ideas,research contents,formation framework,key technologies,difficulties in implementation and its development strategies.