Cross-task collaborative learning for aboveground biomass estimation from UAV hyperspectral imagery in sample-scarce desert rangelands. - Tao Zhang 125; Chuanzhong Xuan; Zhaohui Tang 002; Xinyu Gao; Suhui Liu; Yaobang Song; Qingjin Cao; Fei Cheng (Comput. Electron. Agric., 2026)