1. Conventional Methods of Soil and Agricultural Chemistry Analysis (in Chinese);Agricultural Chemistry Committee of China,1983
2. Bivand, R., Yu, D., 2020. spgwr: Geographically Weighted Regression. R package version 0.6-33. https://CRAN.R-project.org/package=spgwr.
3. Predictive mapping of soil organic carbon in Northeast Algeria;Boubehziz;Catena,2020
4. Spatial prediction of soil attributes using terrain analysis and climate regionalisation;Böhner;SAGA - Analysis Model. Appl.,2006
5. Random forests;Breiman;Machine Learn.,2001