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内蒙古托克托县南坪人民公社大羊厂管理区,三面均系流动沙地,面积约10万余亩,沙地由小型新月形流动沙丘组成。沙丘下的基础地形为旧日黄河冲积物,地形平坦,地下水位(在沙丘边实测)5—6米。根据访问,当地风暴日期在春末夏初(清明一立夏),盛行风向为西风及西北风,沙丘移动主要在这时期内,年移动速度约1—3米。本地区几年来,大力开展固沙造林工作,目前固定沙丘均已绿化,半流动沙丘上也基本逹到有草有
Inner Mongolia Tuoketuo County Nanping people’s commune big sheep factory management area, all three are mobile sand, an area of about 10 acres, the sand by the small crescent-shaped mobile dunes. The basic terrain under the sand dunes is the old Yellow River alluvial deposits. The terrain is flat and the groundwater level (measured at the sand dune) is 5-6 meters. According to the interview, the local storm date was early spring and early summer (clear and one summer), prevailing winds were westerly and northwest winds, and movement of sand dunes was mainly in the period of about 1-3 meters per year. In the past few years, the afforestation project has been vigorously carried out in the region. At present, all the fixed sand dunes have been afforestated. On the semi-mobile sand dunes,