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KMID : 1024520030120020133
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Journal of the Environmental Sciences
2003 Volume.12 No. 2 p.133 ~ p.137
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Dynamic Changes of Newly formed Wetlands in the Yellow River Mouth Based on GIS and Remote Sensing
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Zhao Gengxing
Chen Weifeng
Shi Yanxi
Ann Seong-Won
Li Jing
Kim Young-Chil
Jung Jea-Hoon
Chae Soo-Cheon
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Abstract
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The Yellow River delta is an important region where coastal and newly formed wetlands distribute in north China. Based on satellite remote sensing images and GIS techniques, this paper tends to delineate the dynamic changes of newly formed wetland in the Yellow River mouth from 1986.5 to 1996.10. Our results show that the newly formed wetland increased by 24.9 per year. Before 1990. 1 and it decreased by 2.40 per year after that. The northern and southwestern parts of the Yellow River mouth are main positions of decrease and the southern and the estuary parts are main positions of increase. The advancing rate of river mouth extending into the Bo Sea is decreasing obviously. The reason for that is the decreasing of water and sediments in the Yellow River, which caused by the increasing use of water and soil conservation on upper reach.
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KEYWORD
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Wetland, Yellow River, GIS, Remote sensing, Climatic change
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