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- W1991426997 abstract "One important method to obtain the continuous surfaces of soil properties from point samples is spatial interpolation. In this paper, we propose a method that combines ensemble learning with ancillary environmental information for improved interpolation of soil properties (hereafter, EL-SP). First, we calculated the trend value for soil potassium contents at the Qinghai Lake region in China based on measured values. Then, based on soil types, geology types, land use types, and slope data, the remaining residual was simulated with the ensemble learning model. Next, the EL-SP method was applied to interpolate soil potassium contents at the study site. To evaluate the utility of the EL-SP method, we compared its performance with other interpolation methods including universal kriging, inverse distance weighting, ordinary kriging, and ordinary kriging combined geographic information. Results show that EL-SP had a lower mean absolute error and root mean square error than the data produced by the other models tested in this paper. Notably, the EL-SP maps can describe more locally detailed information and more accurate spatial patterns for soil potassium content than the other methods because of the combined use of different types of environmental information; these maps are capable of showing abrupt boundary information for soil potassium content. Furthermore, the EL-SP method not only reduces prediction errors, but it also compliments other environmental information, which makes the spatial interpolation of soil potassium content more reasonable and useful." @default.
- W1991426997 created "2016-06-24" @default.
- W1991426997 creator A5044321404 @default.
- W1991426997 creator A5068464337 @default.
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- W1991426997 date "2015-04-30" @default.
- W1991426997 modified "2023-10-18" @default.
- W1991426997 title "Ensemble Learning for Spatial Interpolation of Soil Potassium Content Based on Environmental Information" @default.
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- W1991426997 doi "https://doi.org/10.1371/journal.pone.0124383" @default.
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