Changes in Global Grassland Productivity during 1982 to 2011 Attributable to Climatic Factors. - Qingzhu Gao; Mark W. Schwartz; Wenquan Zhu; Yunfan Wan; Xiaobo Qin; Xin Ma; Shuo Liu; Matthew A. Williamson; Casey B. Peters; Yue Li (Remote. Sens., 2016)