Regional Land Use / Cover Change Information Extraction Integration Technology - Guyuan County, Zhangjiakou City, For Example

The land is the natural resources, ecological resource, is economic resources too, is the important part in the global ecosystem too at the same time. Land use/land cover change causes the global change, and land use is the closest respect that nature cross with humanity, so land use /land cover study can drive the research courses of the global environment change and sustainable developments. To utilize land rationally can be guided through dynamic monitoring of land use/land cover, through adjust the economic activities of human society, the relation between land and people becomes coordinate further, the land resource can be utilized sustainably at the same time.With social economic development, population, land, resource and environmental questions become outstanding day by day. The demands for geographical information grows more and more at the same time. RS has undoubtedly already become one of the most important geographical information sources with its superior. So many merits of RS technology, such as the trends, macroscopic, receive and the image series of the same area etc, make it incomparable to traditional technological methods of land use/land cover. However, Limited to the variety of the natural elements and the social environment, the complexity of the surface feature spectrum in the area, the means of remote sensing can not reflect the surface feature state directly, clearly. For this reason, the technological research of RS information drawing is in the ascendant.It is a direction for RS information drawing in ration that the information of Geographic special topic taken automatically from the digital image of the satellite, can be realized step by step. It is not merely a request of the RS applications to realize that the RS image is solved and translated with high accuracy and in ration automatically. It is the forward position of RS development oneself at present too '''. With the development at full speed of 3S technology, the technologies of RS image information drawing develop day by day. Thecomplexities of Regional geographical environments determine the method of RS information drawing is not the uniqueness. Based on the preliminary treatment to the RS image with ERDAS software, regard GIS as the main technological means, this paper attempt to build a quantization knowledge base between land use/land cover and geographical elements. Land use/land cover information can be drew from RS image by quantization knowledge base built. The distinct information of RS image can be drew during the course of image pretreatment, the complicated information can be drew by the analysis with the quantization knowledge base.Research indicates that the method is feasible to that RS information is drew by building quantization knowledge base between RS image after pretreatment using traditional methods and geographical elements. Many methods can be used alternately for regional RS information that reduces the fuzzy quality of the traditional methods of information drew, increases the science, the accuracy, the quality of the result of the RS information drew.There are some innovations in this paper.1.Many information sources are used firstly in the study of land use and land cover information drawing in this area.2.The ageing of data using is raised and the labour, material resources are saved in the study of RS information drawing.3.The using of 3S technologies is integrated firstly in the study of land use and land cover information drawing in this area.