鄂尔多斯高原砒砂岩沙棘生态工程实施 5年来 ,已完成中央投资 1亿元 ,共种植沙棘 12 7万hm2 ,每年可减少流入黄河泥沙 2 10 0万t ,累计减少泥沙近亿吨 ,有效控制了水土流失。鄂尔多斯高原砒砂岩区涉及山西、陕西和内蒙古的 11个旗、县、区 ,总面积 3 2万km2 ,年均输入黄河泥 In the five years since the implementation of the seabuckthorn ecological project in Ordos Plateau, the central government has completed 100 million yuan of investment in the seabuckthorn and planted a total of 127 million hm2 of seabuckthorn. Each year, it can reduce the flow of sediment into the Yellow River by 2.10 million tons and reduce sediment by nearly 100 million tons to effectively control Soil and water loss. The Ordos Plateau sandstone area involves 11 flags, counties and districts in Shanxi, Shaanxi and Inner Mongolia with a total area of ​​32,000 km2. The Yellow River mud