Abstract:

China has the world’s longest land boundary line with the length of over 22,000 kilometers and borders 14 countries. The state boundary and border regions are characterized by extreme diversity in terms of geology, topology as well as culture, which makes the boundary delimitation, demarcation and maintenance very complicated and challenging. This paper gives a brief introduction of the research and development on the state digital boundary. A comprehensive spatial boundary database had been set up by spatial integration of multi-media, multi-temporal and multi scale boundary documents and data. Special information processing and analysis systems for delimitation and demarcation had been successfully developed by combing boundary legal knowledge and digital terrain analysis. Information systems for regular and daily boundary maintenance were also developed and now in operational use.

Key words: digital boundary, object-oriented data modeling, delimitation and demarcation, information service