风沙土是风成沙性母质上发育的土壤,在我国西北干旱及半干旱地区有着广泛的分布,多系沙漠化的历史产物。由于其基质粗松,结构松散,经常处于脆弱的生态平衡系统之中,在自然和人为因素的影响下,其生态平衡极易遭到破坏,导致土地沙化面积不断扩 Aeolian sandy soil is a kind of soil developed on the aeolian sandy parent material. It has a wide range of distribution in the arid and semiarid regions of northwestern China and is the historical product of multi-series desertification. Due to its loose and loose matrix, it is often in a fragile ecological balance system, under the influence of natural and man-made factors, its ecological balance can easily be destroyed, resulting in the continuous expansion of land desertification