THE APPLICATION ON SUSTAINABLE LAND USE EVALUATION BY '3S' TECHNOLOGY

摘要

With land resource lack and environment pollution, land conflict between supply and demand problems has affected human survival environment sustainable development badly. Sustainable land use evaluation could explore the land resource exploitation direction, level and mechanism, it provides gist for land resource planning and management to make it in favour of social environment development. '3S' technology is useful in land resource evaluation, GPS provides the precise space position, RS provides land cover image frequently and accurately, and GIS provides a tool for spatial analysis and cartography. This paper introduced the process and method of sustainable land use evaluation, mainly about the indicator spatialization. The indicator can be divided into statistical indicator and geospatial indicator. Take Guyuan county, Kangbao county and Zhangbei county in Bashang region as examples, an sustainable land use evaluation indicator system was set up. Evaluating the sustainable land use in Bashang region in 2003, the result distributes continuous. It illuminates that the sustainable land use level is low in Bashang region. From the land use view, the distribution of farm land has higher level than water and useless land.