Yan’an City,Shanxi Province Investigation Management Of Land Use Change

With the rapid economic development, land supply and economic growth, a shortage phenomenon, contradictory gradually sublimated, how intensive land conservation, land to find out the real situation, becoming the lifeblood of economic development.In our early days, land use management chaos. In 1984, the first nationwide land survey of the pilot counties, followed for as long as three years of land survey work, basically to find out the existing land use, an end to this state of empty land. Then make changes every year investigation, but due to traditional land change survey technology can not meet the development of modern science and technology, the lag of land alteration survey of current trend, 3S technology came into being, in order to further find out the real situation of land resources, technological change survey The method is imperative.3S technology has begun to spread, but the relative backwardness of the northwest city, 3S technology is the bud, in view of this, this paper wants to Application and Prospect of 3S technology in the exploration of changes in deployment, Yan’an City, Shanxi Province to study the land change survey regional empirical analysis of land use change survey of three methods to do a detailed comparative analysis, analysis of the change process, problems encountered: insufficient degree of specialization, technical standards are not unified, rigorous survey of practice is not enough to produce the region the main reason for the difference: the system level, technical level, the operational level, and for a reason to start a deeper level of discussion and research.Finally, find a northwest mountain counties with local characteristics change survey method, we put forward a different classification system, worth discussing coordination, application software and technical standards between the various processes and the like. Propose specific measures: promoting land use change survey institution-building, unified land use classification standards, regulate land change survey procedures, improve land use survey software application level. Land use change survey 3S technical support will contribute to the further development of land and resources management information technology.