Extracting Precaution Line Of The Arid Area Environmental Changes Using '3S' Techniques

摘要

Through "3S" techniques, the study has analyzed the quantitative, qualitative and spatial changes of the Kenya oasis land cover from 1989 to 1999. In contrast to the data of the past years' fieldwork, the environmental change and the desertification degree of this study area for nearly 10 years have been analyzed, and the precaution line on the environmental evolution of the oasis has been extracted.