SoilGrids250m 2017-03 - Clay content (0-2 micro meter) mass fraction

Clay content (0-2 micro meter) mass fraction in % at 7 standard depths predicted using the global compilation of soil ground observations. Accuracy assessement of the maps is availble in Hengl et at. (2017) DOI: 10.1371/journal.pone.0169748. Data provided as GeoTIFFs with internal compression (co='COMPRESS=DEFLATE'). Measurement units: w%.本数据集为基于全球土壤实地观测汇编数据预测得到的7个标准深度处的粘土（粒径0~2微米）质量分数，以百分比为单位。该土壤分布图的精度评估详情可参见Hengl等人（2017）的研究文献，DOI：10.1371/journal.pone.0169748。数据集采用GeoTIFF格式存储，内部使用DEFLATE压缩算法，压缩参数为co='COMPRESS=DEFLATE'。测量单位：质量百分比（w%）。