STUDY N METHODS OF LAND USE DYNAMIC MONITORING AT COUNTY LEVEL Taking Dehui County, Jilin Province for Example

摘要

Remote sensing techniques has played an important role in land use dynamic monitoring, but as for the land use dynamic monitoring at county level, traditional remote sensing methods such as satellite imagery visual interpreta- tion and computer classification can not meet its demand for accuracy. The result of 1:10 000 land use investigation map has high accuracy, but this method can not be used to dynamically monitor the land use because of its big expenses, long period and difficulty in updating data.