sustainability Article Quantifying Grazing Intensity Using Remote Sensing in Alpine Meadows on Qinghai-Tibetan Plateau Qingqing Ma 1, Linrong Chai 1, Fujiang Hou 1, Shenghua Chang 1, Yushou Ma 2, Atsushi Tsunekawa 3 and Yunxiang Cheng 1,4,* 1 State Key Laboratory of Grassland Agro-ecosystems;...