In the desert area in Hexi of Gansu,China,an accumulated sand-belt formed along the oasis edge,especially at the upwind places,during the process of desert control. The accumulated sand-belt took over 50 years to form and is a byproduct of combating desertification from afforestation and barriers-setting. In this study,we conducted a comprehensive analysis of the accumulated sand-belts along the Hexi oasis edge as well as data from 21 samples to determine the ecological functions and significance of the acc...