Mapping China's planted forests using high resolution imagery and massive amounts of crowdsourced samples. - Cheng, Kai; Su, Yanjun; Guan, Hongcan; Tao, Shengli; Ren, Yu; Hu, Tianyu; Ma, Keping; Tang, Yanhong; Guo, Qinghua (ISPRS Journal of Photogrammetry & Remote Sensing, 2023)