This research was made by a combined use of MSS

treatment with digital magnetic tape

and ground data collected for different specialized perposes. Several data preprocessing methods were suggested to improve the data quality. Preprocessing of data includes:（1） FFT2D and Gauss’ Filter on MSS4;（2） FFT2D and IFT2D based on MSS5;（3） Scale on MSS7:（4） Color-composite of the results of 1

2

; Provides a clear image for vegetation and geo-morphology; （5） Piecewise linear and palette on MSS4.The results of 5 is used in information extraction of vegetation types and their delimitation with the data collected on the ground. Information about geomorphology

vegetation

soil

climate can be obtained and a corresponding series of maps can be made.The color infrared photographs can be further used for the detailed investigation of land assessment of environmental quality to build the information base for land resourses environmental quality and social economy. By using mathematical models

the evaluation of land quality and management program could be done.