干旱区研究
Spatiotemporal Evolution of Vegetation Cover and Surface Humidity Since Implementing the Grain for Green Project in the Loess Plateau
ZHANG Chong, WANG Jing, LEI Tian-wang, MA Ling, SONG Dian-xing
Arid Zone Research . 2018, (6): 1468 -1476 .  DOI: 10.13866/j.azr.2018.06.25