The Ecological Impacts on River Wetland Ecosystem of River Training Works of the Yellow River and its Prevention Measures

Based on the case study of river training works between Tongguan and Sanmenxia reach of the Yellow River, the characteristics of river training works and the development of Yellow River wetland were analyzed, the main ecological impacts of river training works on Yellow River wetland were identified, and its positive and negative impacts were forecasted and evaluated. The results showed most negative impacts of river training works are short - term and restorable impacts, which occur in the period of construction; however, the positive impacts are long - term impacts, and the river training works construction are able to improve protection of rare birds' habitats, reduce loss of water and soil, and maintain ecological integrality of Yellow River wetland and ecological safety of Sanmenxia reservoir.