The desertification of agriculture and pasturage interlaced zone of northern Shaanxi of China from 1986 to 2000 was monitored through three sets of the multi-temporal remotely sensed data of TM

acquired in August 1986

July 1993

and August 2000.Based on the RS and GIS

this research attempted to monitor on the desertification landscape structure process.The results showed that the extent of desertification has spread while the overall severity of land degradation

and it's patches congregated and expanded

while the landscape of sandy desertification becoming more fragmented.Fortunately

the degree of the sandy desertification had manifested declining

because the severe desertification area had decreased 121 474.5 hm2 and the moderate desertification was taken in the leading position rather than severe desertification.But slight and moderate desertification had to faced potential danger that may convert to severe desertification due to human activities and droughty climate.The spatial centroid of desertification landscape patches expanded to the southwest and northeast from 1986 to 2000.Furthermore

the sandy desertification extent is continuously to the southeast and northeast loess gully and hilly areas with catenaries

the whole situation of sandy desertification becomes serious and serious.