[1]WANG Cui-ying,YANG Qin-ke,GUO Wei-ling,et al.Selection of the Spatial Interpolation Methods for Precipitation in the Regional Soil Erosion[J].Research of Soil and Water Conservation,2008,15(02):88-91.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
15
Number of periods:
2008 02
Page number:
88-91
Column:
Public date:
2008-04-20
- Title:
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Selection of the Spatial Interpolation Methods for Precipitation in the Regional Soil Erosion
- Author(s):
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WANG Cui-ying1,2, YANG Qin-ke1,2, GUO Wei-ling1,2, YAO Zhi-hong1,2, LI Wen-feng1,2
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1. Institute of Soil and Water Conservation, Chinese Academy of Sciences And Ministry of Water Resources, Yangling, Shanxi 712100, China;
2. College of Resources and Environment, Northwestern A & F University, Yangling, Shanxi 712100, China
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- Keywords:
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inverse distance weighted; Universal Kriging; precipitation
- CLC:
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S157
- DOI:
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- Abstract:
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Every cell’s climatic information can be used by interpolation method when researching district soil erosion model,it is important to compare the results obtained using alternative methods applied to each data set.In this study,two methods for spatial interpolation of precipitation data were compared using 2003 year six months precipitation from the Yah,an demonstration area was interpolated using inverse distance weighted(IDW) and Universal Kriging methods.Corresponding cross-validation test show that a log-transformation improves the accuracy,by a log-transformation the value of MRE is 8.30% and 7.67% in the methods of IDW and Kriging respectively that is lower 23.17% and 23.50~ than the result of original data.In addition,the method of GIDS can not be used in the study.Universal Kriging method is more accurate in predictions than IDW in this area.