The Spatial Pattern of Landcover in the Drawdown Area of Danjiangkou Reservoir

doi:10.6046/gtzyyg.2011.04.20

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Abstract

In this paper, the location of the submerging area at different water levels (150 m,160 m,170 m and 172 m) in Danjiangkou reservoir basin was detected based on the DEM data,and the landcover below 172 m level was obtained by using object-oriented classification approach based on RapidEye and Landsat-5 TM data. The authors analyzed not only the spatial patterns of the landcover in the drawdown areas but also the impact factors. The results show that the acreage of the drawdown area at 150-160 m,160-170 m and 170-172 m level is 232.0 km²,242.6 km² and 43.1 km² respectively. The acreage of the cultivated land is the largest,accounting for about 50% in every drawdown area. In addition,the acreage of the bare land is larger at the low water level,while that of the forest is larger at the high water level. Dynamic scheduling and slope constitute the impact factors on the spatial pattern of landcover. Both have a significant impact on the distribution of landcover in the low elevation region,while the slope has a significant impact on the distribution of landcover in the high elevation region.

Keywords Land surface radiation temperature Land surface temperature Infrared channels Downscaling FY-2C MODIS

TP 79

Issue Date: 16 December 2011

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	RONG Yuan
	YANG Yong-min

Cite this article:

RONG Yuan,YANG Yong-min. The Spatial Pattern of Landcover in the Drawdown Area of Danjiangkou Reservoir[J]. REMOTE SENSING FOR LAND & RESOURCES, 2011, 23(4): 108-114.

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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2011.04.20 OR https://www.gtzyyg.com/EN/Y2011/V23/I4/108

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