With the development and popularization at full speed of Internet network, the geographical information system of the WWW (WebGIS) is becoming a kind of popular tool. The sharing of the spatial information has already become a kind of inevitable trend.

• 随着Internet网络的飞速发展和普及，万维网地理信息系统(WebGIS)正在成为一种大众化的工具，空间数据的信息共享已经成为一种必然的趋势，一个开放的，易于访问的地理信息系统将有利于实现数据和服务的广泛共享，从而有利于各个部门之间的信息交流。