干旱区生态环境知识资源中心

For assuring irrigation district's natural function, the sediment aggraded in the canal and depositing pool must be dredged out termly, twain banks of canal were stacked high with the sediment after a considerable period of time, artifical desert came into being, it destroyed the environment around irrigation districts and threatened to the producing and living of people and economy development. First the paper introduces the austere actuality of stacking sediment, and then it summarizes modes of damage, of stacking sediment, according as the keystone of movement of sediment, finally the degree and mechanism of damage of stacking sediment was analysed deeply, it trys to offers technical support to harness the damage of stacking sediment in the irrigation districts along the lower Yellow River.