Based on the sediment retention experimental results by Seabuckthorn "flexible dam" at the gully head area in soft rock region, gully channel comprehensive control model and agricultural planting and management model of Seabuckthorn, the paper analyzed the dominant coordinative function of Seabuckthorn in sustainable soil and water use in the region and the coordinative relationship. The also presented a diagram of harmony relation between human beings and environment coordinated by seabuckthom "flexible dam" system. It proves that the fact of the scientific suggestion of "taking seabuckthom resource development as a breakout for accelerating treatment on loess plateau" is the all-direction coordinative function by seabuckthom "flexible dam" system from gully head section. The paper finally pointed out the inevitable result of sustainable development.
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