EJP SensRes bi-directional reflectance of soils

Repository of the database of bi-directional soil spectral reflectance measurements and the corresponding physico-chemical variables for soil carbon estimation. Soil samples from the chemistry laboratory were prepared for the spectral measurements that were carried out using a full-range PSR-3500 spectrometer in the range 350-2500 nm. The spectral sensor was mounted on a robotic arm to perform a regular sampling strategy involving multiple viewing angles and different soil water contents. Three main datasets were compiled, and they are summarized in Table 1 in the related .doc document.面向土壤碳估算的双向土壤光谱反射率测量数据库及其对应理化变量的数据集仓库。 实验所用土壤样本取自化学实验室并完成前期制备，光谱测量采用全波段PSR-3500光谱仪，测量光谱覆盖范围为350~2500 nm。该光谱传感器搭载于机械臂，按照标准化采样策略开展测量，涵盖多观测角度与多种土壤含水量工况。 本次研究共整合三类核心数据集，相关.doc文档中的表1对其进行了汇总说明。