Research on Monitoring the Changes of Desertification Based on Remote Sensing
نویسنده
چکیده
Desertification is caused by the influence of the climatic, environmental changes and human activities. Its enlargement and reverse leads to not only the changes of spatial structure, scope and environment but also the development of society and economy. Chose TM remote sensing images which had two different temporal phases as data sources. Through data preprocessing and the choice of suitable vegetation index,information of desertification in typical area was acquired. Then, in the support of ARCGIS,monitored the changes of desertification in the typical area. The result shows: From 1995 to 2001, the study area was the development of land desertification state, development area covered 478.10 km, reversed area covered 426.90 km. The development area was 51.20 larger than reversed area.
منابع مشابه
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