TANG Guo an, YANG Qin ke, ZHANG Yong, et al. Research on Accuracy of Slope Derived From DEMs of Different Map Scales[J]. Bulletin of Soiland Water Conservation, 2001, 20(1): 53-56.
TANG Guo an, YANG Qin ke, ZHANG Yong, et al. Research on Accuracy of Slope Derived From DEMs of Different Map Scales[J]. Bulletin of Soiland Water Conservation, 2001, 20(1): 53-56.DOI:
Taking Jiuyuan watershed in Suide county of northern Shaanxi province,a test area
applying overlaidand cxun parative laws as a basic research m ethodology and 1:10 000 DEM as a cntenon
a research on the errors simulation and the rectify method in deriving slope gradient from 1:50 000 scale DEMs was made A gradient correction down}caling model obtained can effectively rectify the slope statistical values in the hill and gully area of the loess plateau
which is of great significance in enacting related standards in the fields of both soil erosion monitoting and soil conservation.
关键词
Keywords
references
Bolstad P V,Stowe T. An evaluation of DEM accuracyElevation, Slope, and Aspect[J]. Photogrammetric; Engineering and Rc}noLe Sensing,1994,60(11):1327-1332.
Carter J The effect of data precision on the calculation of slope and aspect using gridded DEMs[J].Cartographi-ca,1992,29(1):22-34
Gao J. Resolution and accuracy of terrain representation by grid DEMs at a micro-scale[J].Cartographical Infororation Scdence, 1997,11(2): 199-212.