Alpine vegetation phenology dynamic over 16 years and its covariation with climate in a semi-arid region of China - Zhou, Jihua; Cai, Wentao; Qin, Yue; Lai, Liming; Guan, Tianyu; Zhang, Xiaolong; Jiang, Lianhe; Du, Hui; Yang, Dawen; Cong, Zhentao; Zheng, Yuanrun (The Science of the total environment, 2016)