[1]ZHANG Xiao,CHEN Gang,DUAN Miaoran,et al.Comparative Study of Different DEM Interpolation Algorithms in the Southern Complex Geomorphologic Zone[J].Research of Soil and Water Conservation,2015,22(05):106-112.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 05
Page number:
106-112
Column:
Public date:
2015-10-28
- Title:
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Comparative Study of Different DEM Interpolation Algorithms in the Southern Complex Geomorphologic Zone
- Author(s):
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ZHANG Xiao1,2, CHEN Gang1,2, DUAN Miaoran1,2, XUE Mengjiao1,2, CHEN Ruifang1,2
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1. Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Nanjing 210023, China;
2. Department of Geographic Information Science, Nanjing University, Nanjing 210023, China
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- Keywords:
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digital elevation model; interpolation algorithms; southern complex geomorphology; accuracy assessment
- CLC:
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P208
- DOI:
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- Abstract:
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Digital elevation model (DEM) is the basic data of digital terrain analysis and plays the key role in the soil sciences, hydrology, geomorphology, environmental science, geologic hazard, agriculture and so on. DEM accuracy is closely related to the characteristics of interpolation algorithms and types of landform, therefore, research on the fitting precision with interpolation methods on different landforms is important for the improvement of the DEM interpolation accuracy. Based on six interpolation methods including ANUDEM, IDW, Kriging, Spline, NNI and TIN, we chose southern complex geomorphologic zone as study area to contrast the accuracy of the interpolation surface and reticulation water network. The results showed that DEM interpolated by ANUDEM was much more precise than the others and reflected the terrain factors correctly in the hilly areas. Both ANUDEM and TIN performed well and could extract water network information in the plains. This study contributes to the obtaining of high-accurate DEM in southern complex geomorphologic zones.