Abstract
In this paper a new remote sensor on board HJ-1 satellite was used to extract information on landscape destruction. Based on post-earthquake HJ-1 CCD image, landscape change in the Wenchuan earthquake stricken area were recorded. It showed evidence that the spatial distribution of landscape destruction intensified significantly in the valleys of the Min River. Airborne remote sensing with its flexibility and high-resolution can achieve highly accurate natural landscape destruction information by means of human-computer interaction. Landscape change map in the earthquake area by airborne image could be utilized as validation data. Landscape change result obtained by HJ-1 CCD sensor has the relative error of about 16.2% less than that by ADS40 airborne images. This paper also discussed the correction method of landscape change detection using HJ-1 CCD image. The conclusion of this study is that HJ-1 CCD sensor has a great potential in monitoring and assessment of natural hazards.
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