Enhancement of Urban Spatial Data Infrastructure to Support Land Administration in City Sanya, China

SUMMARY Digital earth and e-government have significant impacts on the development of different land information systems in China in the recent decade. There was a tide of building up electronic land databases upon the traditional urban cadastral and land information management systems in wealthy cities. Most of these systems lack coordination, inter-operation, data sharing or exchange functions. They are built basically for departmental internal uses. Many investments were duplicated and wasted. There are hindrances on further development of Land Based Services and the applications on e-government are much limited. This paper reports on the investigation of the developments of urban land cadastral and land information systems in Sanya, Hainan, the Peoples' Republic of China in the recent decade, and discusses ways for enhancement of these systems particularly in the aspects of data ownership, copy right arrangement, data contents and quality control.