Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation;
College of Resources and Environment;
Fujian Agriculture and Forestry University;
Fuzhou 350002;
People’s Republic of China;
College of Forestry;
Fujian Agriculture and Forestry University;
Fuzhou 350002;
People’s Republic of China;
School of Environment and Spatial Informatics;
China University of Mining and Technology;
Xuzhou 221006;
Jiangsu;
People’s Republic of China;
General regression neural network; Interative algorithm; Ordinary kriging; Regression kriging; Spatial prediction; Soil organic matter;