SoilGrids250m 2.0 - Sand content aggregated 1000m

Sand content (50/63-2000 micro meter) mass fraction in ‰ at 6 standard depths. Predictions were derived using a digital soil mapping approach based on Quantile Random Forest, drawing on a global compilation of soil profile data and environmental layers. This map is the result of resampling the mean SoilGrids 250 m predictions (Poggio et al. 2021) for each 1000 m cell.本数据集涵盖6个标准深度处的砂粒质量分数（单位：‰），砂粒粒径范围为50/63~2000微米。该数据集的预测结果采用基于分位数随机森林（Quantile Random Forest）的数字土壤制图方法生成，依托全球土壤剖面数据与环境图层汇编成果构建。本空间分布图为将SoilGrids 250米分辨率预测结果（Poggio等，2021）的均值重采样至每1000米栅格单元后得到的最终成果。