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http://dx.doi.org/10.7780/kjrs.2009.25.2.175

A Comparative Analysis of land Cover Changes Among Different Source Regions of Dust Emission in East Asia: Gobi Desert and Manchuria  

Pi, Kyoung-Jin (Dept. of Geoinformatic Engineering, Pukyong National University)
Han, Kyung-Soo (Dept. of Geoinformatic Engineering, Pukyong National University)
Park, Soo-Jae (Dept. of Geoinformatic Engineering, Pukyong National University)
Publication Information
Korean Journal of Remote Sensing / v.25, no.2, 2009 , pp. 175-184 More about this Journal
Abstract
This study attempts to analyze the difference among the variations of ecological distribution in Gobi desert and Manchuria through satellite based land cover classification. This was motivated by two well-known facts: 1) Gobi desert, which is an old source region, had been gradually expanded eastward; 2) Manchuria, which is located in east of Gobi desert, was observed as a new source region of yellow dust. An unsupervised classification called ISODATA clustering method was employed to detect the land cover change and to characterize the status of desertification and its expanding trends using NDVI (Normalized Difference Vegetation Index) derived from VEGETATION sensor onboard the SPOT satellite for 1999 and 2007. We analyzed NDVI annual variation pattern for every classes and divide into 5 level according to their vegetation's density level based on NDVI. As results, Gobi desert is showed positive variation: a decrease $78,066km^2$ in central Gobi desert and out skirts of Gobi desert (level-0) but Manchuria area is worse than previous time: an increase $25,744km^2$.
Keywords
desertification; land cover change; Gobi desert; Manchuria; SPOT VEGETATION;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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