[1] Cui X, Guo Z G, Liang T G, et al. Classification management for grassland using MODIS data, a case study in the Gannan region, China[J]. International Journal of Remote Sensing, 2012, 33: 3156-3175.
[2] Cui X, Gibbes C, Southworth J, et al. Using remote sensing to quantify vegetation change and ecological resilience in a semi-arid system[J]. Land, 2013, 2: 108-130.