Implement water diversion measures to ease the ecological water demand of the Yellow River Delta

The Yellow River Delta is China's the most complete and most young native wetland ecosystems. Yellow River Delta National Nature Reserve is located at the new silt zone on both sides of the Yellow River, with a total area of 153,000 hectares. There are large variety of plants and migratory birds. Due to the development of the area, land and oil exploring, and water flow decreasing, the wetland scope is becoming smaller and the biodiversity is threatened. During the two years from 2008 to 2009, YRCC implemented two times of Yellow River water and sediment regulation practices to supply water into the wetland. But there are still many problems to keep the substance development of the delta wetland, such as serious lack of water resources, no water supply flow guarantee for delta ecology and so on. According to these problems and the present situations and effects of the eco-water-supply practices, the author point out some measures and opinions to keep a long term effect eco-water-supply.