Dynamic characteristics and influencing factors of desertification in the middle reaches of the Yellow River

doi:10.6046/gtzyyg.2013.02.24

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Abstract The situation of the desertification in the middle reaches of the Yellow River is critical. In order to understand the dynamic characteristics and influencing factors of the desertification, the authors analyzed the remote sensing images from 4 different periods (i.e., 1975, 1990, 2000, 2007) in the study area and performed the statistical analysis by means of MapGIS 6.7 and SPSS. Principal factor analysis was employed to find the main factors influencing the desertification. The results show that from 1975 to 2007 the area of desertification in some areas decreased by 2.43?10³ km², but the total area of desertification still accounted for over 60% of the total study area. The geomorphic type played an important role in the desertification. The desertification area of wind-borne landforms accounted for 43.1% of the study area. In a short period, desertification caused by human activities and villainous climate in the middle reaches of the Yellow River accounted for 52% and 48%, respectively.

Keywords digital orthophoto map(DOM) mosaic seamline automatic generation

TP79

Issue Date: 28 April 2013

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	ZHOU Qinghua
	PAN Jun
	LI Deren

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ZHOU Qinghua,PAN Jun,LI Deren. Dynamic characteristics and influencing factors of desertification in the middle reaches of the Yellow River[J]. REMOTE SENSING FOR LAND & RESOURCES, 2013, 25(2): 143-148.

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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2013.02.24 OR https://www.gtzyyg.com/EN/Y2013/V25/I2/143

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