位于武都县城东北部的米仓山和北峪河,历史上曾是一个山青水秀、森林茂密的地方。不知从何时起,这里的绿水青山却被红褐色的光山秃岭所取代。将近500平方公里的土地被雨水冲刷得支离破碎,沟壑纵横。每到雨季,雨水裹着泥沙漫流而下,吞没粮田,冲毁道路,卷走人畜。由此而引发的山体滑坡,毁庄灭村的惨祸时有发生。北峪河的泥沙就地沉积,越堆越高。到1982年9月,县城外的河床 Located in the northeastern Wudu County meters Cangshan and Beiyuhe, historically was a beautiful, dense forests. I do not know since when, where the green Shoushan was replaced by the red-brown Guangshan bald Ridge. Nearly 500 square kilometers of land was washed away by the rain fragmentation, ravines aspect. Every rainy season, the rain wrapped in sediment drifted down, swallowed grain fields, washed away roads, swept away humans and livestock. The resulting landslides, ruins Village destroy the tragedies have occurred from time to time. Beiyuhe sediment deposition in situ, the more heap higher. By September 1982, the riverbed outside the county