Estimating soil moisture content m apple orchards using UAV remote sensing data: Application of LST/LAI two-stage feature space theory. - Zhao, Long; Lei, Xincheng; Ding, Yuehua; Cui, Ningbo; Meng, Dan; Shi, Yi; Zhang, Minglei; Zhao, Xinbo; Zhang, Xiaoxian (International Journal of Agricultural & Biological Engineering, 2025)