Sample information for 180 surface soils (top 0-5 cm) collected from across North Carolina (USA) for 15PNIJ-21-GG-02711-SLFO.

In this National Institute of Justice funded grant, two types of surface soils representing scenarios that would potentially benefit the most from new quantitative methods were collected from across the state of North Carolina (USA) in April 2022: a) similar inorganic content but with distinct land use (category type = mineral rich), and b) those with limited inorganic content but recognizable organic fractions (category type = organic rich). At each location (n, 30), samples were collected from paired sites e.g., manual color determination, polarized light microscopy, x-ray diffraction), along with three new quantitative methods: 1) instrumental colorimetry, 2) automated scanning electron microscopy energy dispersive X-ray spectroscopy of soil minerals, and 3) DNA metabarcoding of plant, bacteria, arthropods and fungi.本研究受美国国家司法研究所（National Institute of Justice）资助，于2022年4月从美国北卡罗来纳州全境采集了两类地表土壤样本——这两类场景最能从新型定量分析技术中获益： a）无机成分相近但土地利用类型存在显著差异（类别类型为富矿物质）； b）无机成分占比有限但有机组分可辨识（类别类型为富有机质）。 在共计30个采样点位（n=30）中，研究人员从配对样地采集土壤样本，并同步开展了相关检测：传统分析方法包括人工色度测定、偏光显微镜观测（polarized light microscopy）、X射线衍射法（X-ray diffraction），同时采用了三种新型定量分析方法： 1）仪器比色法（instrumental colorimetry）； 2）土壤矿物的自动化扫描电子显微镜-能量色散X射线能谱法（automated scanning electron microscopy energy dispersive X-ray spectroscopy）； 3）针对植物、细菌、节肢动物与真菌的DNA元条形码技术（DNA metabarcoding）。