Technology Application |
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A Remote Sensing Analysis of the Variation of Main Surface Geological Environmental Elements in Caofeidian |
FAN Su-ying 1,2, XU Wen-jia 1,2,3, LI Ji-na 1,2 |
1.Center of Hebei Remote Sensing, Shijiazhuang 050021, China; 2. Institute of Hydrogeology Survey of Hebei Province ,Shijiazhuang 050021, China; 3. Institute of Geological Survey of Hebei Province, Shijiazhuang 050081, China |
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Abstract Taking Caofeidian area in Hebei Province as the study area and based on the remote sensing data of Landsat-5 TM
acquired in 1993 and ALOS acquired in 2007, the authors analyzed the temporal and spatial variations of surface geological
environmental elements. Some conclusions have been reached:(1) The areas of the delta wetland,agriculture land of non-
wetland and residential and industrial land were 32.3×104 hm2,20.6×104 hm2 and 4.21×104 hm2 in 1993, and 27.7×104 hm2
,21.8×104 hm2 and 6.8 ×104 hm2 in 2007, respectively. During the 14 years,the area of wetland decreased by 77.3%,while
the agriculture land of non-wetland and residential and industrial land increased by 5.6% and 61.6% respectively. (2) From
1993 to 2007, the coastline varied obviously. The eastern coastline invaded the mainland with the largest invasive
distance up to 500 m. On the contrary,the western coastline moved back to the sea with the largest retreated distance up
to 1 000 m.
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Keywords
Kernel function
Remote sensing
Min-distance classification
Multi-band
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Issue Date: 13 November 2010
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