Method for county-level land use change survey based on orthophoto and GIS

According to Chinese status quo of land-use change survey, and taking Xiyang county, and Jiancaoping district, Taiyuan as study areas, this paper discusses the method for land-use change survey based on orthophoto and GIS. The characteristics of the above method are as follows: Giving full play to the superiority of aerial remote sensing technology, taking orthophoto as main datum source for updating county-level land use status quo, supported by land use database, and integrating data under GIS. A dynamic monitoring system which can grasp county-level land use status quo and change exactly was established.