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府谷县大昌汗小流域是黄河中游多沙集中来源区的重点区域,属极强烈水土流失区,土壤侵蚀模数11 400t/(km2.a)。由于自然和人为因素的双重作用,水土流失严重。尤其是近年来开矿、筑路、开发区建设等开发建设类项目的增多,忽视水土保持工作,造成了严重的水土流失,严重破坏了生态环境。为防止生态环境继续恶化,在坡地、荒地、沟壑等采取修建梯田、谷坊、拦沙坝等水土保持综合措施进行治理,取得了明显的效果,流域水土保持生态防护体系初步形成,基本控制了水土流失;减少了入黄泥沙和水土流失的危害,实现了水土资源持续利用。
The Dachang Khan watershed in Fugu County is the key area for the Dasha concentrated source area in the middle reaches of the Yellow River and belongs to the extremely intensive area for water and soil loss with a soil erosion modulus of 11 400 t / (km 2.a). Due to the dual role of natural and human factors, water and soil loss is serious. In particular, the number of development and construction projects such as mining, road building and development zones has increased in recent years, neglecting soil and water conservation work, causing serious soil erosion and seriously damaging the ecological environment. In order to prevent the ecological environment from continuing to deteriorate, comprehensive measures for soil and water conservation such as the construction of terraced fields, valleys and dams were taken on the slopes, wastelands and gully areas, and obvious effects were achieved. The ecological protection system for soil and water conservation in the basin was initially formed and basically controlled Soil and water loss; Reduce the harm of sediment into the Yellow River and soil erosion, and achieve the sustainable use of water and land resources.