Rapid assessment of flood disaster loss in Sind and Punjab province, Pakistan based on RS and GIS

摘要

Based on Landsat-TM images, the flood disaster area was identified by Spectrum-photometric Method during Pakistan 2010 extra-large floods in this paper. According to the different period's images of pre-disaster and in-disaster, the flood bodies' range was extracted. On this basis, the disaster loss assessment including disastrous area, affected population, disastrous area of farmland (land use information), was made in the most affected provinces-Sind and Punjab. It provided an effective method for disaster assessment and decision-support on fighting floods and providing disaster relief.