Locally Enhanced Digital Soil Map (LE-DSM) Soil Organic Matter and Particle Size Fractions 10-m Resolution Maps for North Central Iowa

The locally enhanced digital soil map (LE-DSM) dataset contains total of 48 maps of soil particle size fractions (psf) (sand, silt, and clay), texture classes, and organic matter (OM) content predicted by digital soil mapping methods and machine learning at 6 depth intervals of 0-5 cm, 5-15 cm, 15-30 cm, 30-60 cm, 60-100 cm, and 100-200 cm. The maps encompass 39 counties in north-central Iowa with a native resolution of 10 meters in the World Geodetic System 1984 Datum (WGS84) Universal Transverse Mercator (UTM) 15 North coordinate system. For soil particle size fractions (sand, silt, and clay), the original predictions were normalized to equal 100% and mapped. The normalized fractions were used to classify and map United States Department of Agriculture soil texture classes. The 48 maps are GeoTiffs, with the main file in TIF and other associated files such as XML, OVR, and TFW.<br>Change Log: v2 renamed the acronym "BUDSS" to "LE-DSM" and corrected typos. Revised 01/2024

本数据集为局域增强型数字土壤图（Locally Enhanced Digital Soil Map, LE-DSM）数据集，共包含48幅土壤相关地图，涵盖通过数字土壤制图方法与机器学习模型预测得到的土壤粒级组分（Particle Size Fractions, psf，包括砂粒、粉粒与黏粒）、土壤质地类别以及有机质（Organic Matter, OM）含量，数据覆盖6个深度区间：0~5 cm、5~15 cm、15~30 cm、30~60 cm、60~100 cm及100~200 cm。
该数据集覆盖美国艾奥瓦州中北部39个县域，原始空间分辨率为10米，采用1984世界大地测量系统（World Geodetic System 1984 Datum, WGS84）下的通用横轴墨卡托（Universal Transverse Mercator, UTM）15北坐标系。
针对砂粒、粉粒、黏粒三类土壤粒级组分，原始预测值已被归一化至总和为100%后再进行制图。
经归一化的粒级组分数据被用于分类并绘制美国农业部（United States Department of Agriculture, USDA）土壤质地类别图。
该48幅地图均为GeoTIFF格式，主文件后缀为TIF，附带XML、OVR、TFW等关联文件。
更新日志：v2版本将缩写“BUDSS”更改为“LE-DSM”并修正了拼写错误，修订于2024年1月。