Hyperspectral response and quantitative monitoring of soil organic carbon on the Loess Plateau - Sha Yang; Zhigang Wang; Chenzhi Zheng; Yuchao Yang; Jiancheng Zhang; Xingxing Qiao; William Rickard; Yu Zhao; Meichen Feng; Longmei Gao; Wude Yang; Chao Wang (Computers and Electronics in Agriculture, 2026)