Based on the description of the characteristic of WebGIS and the technique of virtual geo-environments, this paper develops a research of the application of WebGIS in virtual geo-environments.

Virtual Geographic Environments Oriented 3D Visualization System;

This paper discusses the design and construction of digital campus system of USTS based on virtual geographic environments.

Visualization of large scale terrain is playing a key role in the study of 3-D GIS 、 virtual reality and virtual geographic environments.

Application of Grid Technology in Virtual Geographic Environment;

Some Thoughts on Virtual Geographic Environments;

Study on the Network Architecture of Virtual Geographic Environment based on P2P;

Research on Visual Expression Method of Temporal Information in Virtual Geographical Environment;

The distributed integration of geographical models is one of the main objectives of the virtual geographical environment.

This paper explains the concept of virtual geographical environment,and introduces its characteristic and the key technology in the application of virtual geographical environment technology on the practice of geographical researching and teaching in university.

This paper simply introduces the theory of spatial cognition in virtual terrain environment,and discusses in aspects of multi-sense channels spatial cognition,interaction,and the factors influenced spatial cognition efficiency,etc.

In virtual terrain environment based on large scale map,because of the needs of nearness to view-point and all kinds of requeries and analysis,it is required to represent exactly terrain characters and make accurate fusion between ground features and terrain in order to meet observation and positioning.