Study on the application of 3S technology in land-use change survey

Abstract：Land resources are essential to human survival.Ascertaining the actual situation of land resources and information of land change, which is a basis for overall planning of land use and macroscopic decision making on land resources.Now, the widely used methods of survey are affected by a number of factors, it is difficult to ascertain the exact space location of changed map spot.In recent years, the integration of RS, GIS and GPS (3S) has become an important field in the land resource administration.The author based on the traditional analysis methods of land-use changes, unified the 3S technology characteristic and the present land utilization situation to discussed land-use change investigation, which based on the 3S technical route.

Keyword：land-use change survey;3S;information system;